To make sure that Go code will work when moved to a
system with a case-insensitive file system, like OS X or Windows,
reject any package built from files with names differing
only in case, and also any package built from imported
dependencies with names differing only in case.
Fixes#4773.
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7314104
This is the same logic used in the standard tracebacks.
The caller pc is the pc after the call, so except in the
fake "call" caused by a panic, back up the pc enough
that the lookup will use the previous instruction.
Fixes#4150.
Fixes#4151.
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7317047
Before, the mheap structure was in the bss,
but it's quite large (today, 256 MB, much of
which is never actually paged in), and it makes
Go binaries run afoul of exec-time bss size
limits on some BSD systems.
Fixes#4447.
R=golang-dev, dave, minux.ma, remyoudompheng, iant
CC=golang-dev
https://golang.org/cl/7307122
The removed code leads to the situation when M executes the same locked G again and again.
Fixes#4820.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7310096
Right now it says 'invalid type S' for a struct type S.
Instead, say which type inside the struct is the problem.
Fixes#4825.
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7301102
In addition to the compile failure fixed in signal*.c,
preserving the signal mask led to very strange crashes.
Testing shows that looking for SIG_IGN is all that
matters to get along with nohup, so reintroduce
sigset_zero instead of trying to preserve the signal mask.
TBR=iant
CC=golang-dev
https://golang.org/cl/7323067
There are two ways nohup(1) might be implemented:
it might mask away the signal, or it might set the handler
to SIG_IGN, both of which are inherited across fork+exec.
So two fixes:
* Make sure to preserve the inherited signal mask at
minit instead of clearing it.
* If the SIGHUP handler is SIG_IGN, leave it that way.
Fixes#4491.
R=golang-dev, mikioh.mikioh, iant
CC=golang-dev
https://golang.org/cl/7308102
Subject Alternative Names in X.509 certificates may include IP
addresses. This change adds support for marshaling, unmarshaling and
verifying this form of SAN.
It also causes IP addresses to only be checked against IP SANs,
rather than against hostnames as was previously the case. This
reflects RFC 6125.
Fixes#4658.
R=golang-dev, mikioh.mikioh, bradfitz
CC=golang-dev
https://golang.org/cl/7336046
It is too flaky. Tried to make it more reliable,
but that affects other tests (they run too long),
because we do unusual things here, like attempting
to connect to non-existing address and interrupt.
R=golang-dev, bradfitz, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/7314097
Add support for arbitrary notes of the form // MARKER(userid): comment
in the same vein as BUG(userid): A marker must be two or more upper case [A-Z] letters.
R=gri, rsc, bradfitz, jscrockett01
CC=golang-dev
https://golang.org/cl/7322061
This fixes a regression introduced in changeset 98034d036d03
which added support for producing host object files.
R=rsc, minux.ma
CC=dave, golang-dev
https://golang.org/cl/7307107
- use the new AllErrors flag where appropriate
- unless AllErrors is set, eliminate spurious
errors before they are added to the errors list
(it turns out that reporting spurious errors always
leads to too many uninformative errors after all)
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7323065
The IgnoredGoFiles are already listed in allgofiles,
so they were being run twice. Worse, the ones in
IgnoredGoFiles are not fully qualified paths, so they
weren't being found when executed outside the
package directory.
Fixes#4764.
R=golang-dev, minux.ma, franciscossouza
CC=golang-dev
https://golang.org/cl/7308049
The second attempt at the Unmarshal optimization allowed
panics to get out of the json package. Add test for that bug
and remove the optimization.
Let's stop trying to optimize Unmarshal.
Fixes#4784.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7300108
There wil be a panic if more than ten errors are encountered. ParseFile
will recover and return the ErrorList.
Fixes#3943.
R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/7307085
Cleans up godoc and makes it consistent. (some had it, some
didn't)
This still keeps the information there, though, for people
looking at the source directly.
R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7324056
Avoids the dot-dot-based algorithm on repeated calls
when the directory hasn't changed.
R=golang-dev, iant, bradfitz
CC=golang-dev
https://golang.org/cl/7340043
This CL provides the implementation of Cookies and
the complete test suite. Several tests have been ported
from the Chromium project as a cross check.
R=nigeltao, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7311073
No code changes.
This is mainly in preparation to scheduler changes,
oldstack/newstack are not related to scheduling.
R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7311085
This is based on rsc's code posted to issue 2585.
Benchmark results are greatly improved:
benchmark old ns/op new ns/op delta
BenchmarkSortString1K 564397 445897 -21.00%
BenchmarkSortInt1K 270889 221249 -18.32%
BenchmarkSortInt64K 26850765 21351967 -20.48%
Eyeballing a sampling of the raw number of comparisons shows a drop
on the order of 20-30% almost everywhere. The test input data that
doesn't match that are some of sawtooth/rand/plateau distributions,
where there is no change in the number of comparisons; that is,
there are no situations where this makes *more* comparisons.
Fixes#2585.
R=iant, rsc
CC=golang-dev
https://golang.org/cl/7306098
Completly the same like the Execer-Interface, just for Queries.
This allows Drivers to execute Queries without preparing them first
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7085056
The test for issue 3590 causes an error to be printed to stderr when run (although the error is obscured during go test std). This is confusing for people who get breakage in the net package as the error is harmless and most likely unrelated to their build breakage.
Given the way the test works, by reaching into the guts of the netFD, I can't see a way to silence the error without adding a bunch of code to support the test, therefore I am suggesting the test be removed before Go 1.1 ships.
R=alex.brainman, mikioh.mikioh, rsc
CC=golang-dev
https://golang.org/cl/7307110
Changed accidentally in 28966b7b2f0c (CopyN using Copy).
Updating docs to be consistent with 29bf5ff5064e (ReadFull & ReadAtLeast)
R=rsc
CC=golang-dev
https://golang.org/cl/7314069
Unexported field and method names that appear in the
export data (as part of some exported type) are fully
qualified with a package id (path). In some cases, a
package with that id was never exported for any other
use (i.e. only the path is of interest).
We must not create a "real" package in those cases
because we don't have a package name. Entering an
unnamed package into the map of imported packages
makes that package accessible for other imports.
Such a subsequent import may find the unnamed
package in the map, and reuse it. That reused and
imported package is then entered into the importing
file scope, still w/o a name. References to that
package cannot resolved after that. Was bug.
R=adonovan
CC=golang-dev
https://golang.org/cl/7307112
Operands returns the SSA values used by an instruction.
Referrers returns the SSA instructions that use a value, for
some values. These will be used for SSA renaming, to follow.
R=iant, gri
CC=golang-dev
https://golang.org/cl/7312090
into separate package. This allows this code to be shared
with the search package without the need for these two to use
the same tables.
Adjusted various files accordingly.
R=rsc
CC=golang-dev
https://golang.org/cl/7213044
The lowering of ast.RangeStmt now has three distinct cases:
1) rangeIter for maps and strings; approximately:
it = range x
for {
k, v, ok = next it
if !ok { break }
...
}
The Range instruction and the interpreter's "iter"
datatype are now restricted to these types.
2) rangeChan for channels; approximately:
for {
k, ok = <-x
if !ok { break }
...
}
3) rangeIndexed for slices, arrays, and *array; approximately:
for k, l = 0, len(x); k < l; k++ {
v = x[k]
...
}
In all cases we now evaluate the side effects of the range expression
exactly once, per comments on http://code.google.com/p/go/issues/detail?id=4644.
However the exact spec wording is still being discussed in
https://golang.org/cl/7307083/. Further (small)
changes may be required once the dust settles.
R=iant
CC=golang-dev
https://golang.org/cl/7303074
Simplify the internal logic for flags controlling what to vet,
by introducing a map of flags that gathers them all together.
This change should simplify the process of adding further flags.
Add a test for untagged struct literals.
Delete a redundant test that was also in the wrong file.
Clean up some ERROR patterns that weren't working.
"make test" passes again.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7305075
This CL provides the rest of the SetCookies code as well as
some test infrastructure which will be used to test also
the Cookies method. This test infrastructure is optimized
for readability and tries to make it easy to review table
driven test cases.
Tests for all the different corner cases of SetCookies
will be provided in a separate CL.
R=nigeltao, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7306054
Support reading pax archives and applying extended attributes
like long names, subsecond mtime resolutions, etc. Default to
writing pax archives for long file and link names.
Support reading gnu archives using the ././@LongLink extended
header for file name and link target.
Fixes#3300
R=dsymonds, dave, rogpeppe, remyoudompheng, chressie, rsc
CC=golang-dev
https://golang.org/cl/6700047
On Windows, CryptoAPI is finding an alternative validation path. Since
this is a little non-deterministic, this change disables that test
when using system validation.
R=golang-dev
CC=golang-dev
https://golang.org/cl/7313068
By default, crypto/x509 assumes that users wish to validate
certificates for ServerAuth. However, due to historical reasons,
COMODO's intermediates don't specify ServerAuth as an allowed key
usage.
Rather NSS and CryptoAPI both allow these SGC OIDs to be equivalent to
ServerAuth.
R=rsc
CC=golang-dev
https://golang.org/cl/7312070
Add benchmark for request parsing. Fixture data is taken from https://github.com/felixge/node-http-perf
% go version
go version devel +28966b7b2f0c Thu Feb 07 20:26:12 2013 -0800 linux/amd64
% go test -run=nil -bench=ReadRequest -benchtime=10s
PASS
BenchmarkReadRequest 2000000 9900 ns/op 61.71 MB/s 3148 B/op 32 allocs/op
ok net/http 12.180s
R=golang-dev, bradfitz, minux.ma, haimuiba
CC=golang-dev
https://golang.org/cl/7313048
On POSIX, '=' in key is explicitly invalid, and '\x00' in key/value is implicitly invalid.
R=golang-dev, iant, bradfitz
CC=golang-dev
https://golang.org/cl/7311061
With the new scheduler races in the tests are reported during execution of other tests.
The change joins goroutines started during the tests.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7310066
The problem happens when end=0, then end-1 is very big number.
Observed with the new scheduler.
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7307073
It might be non-blocking, but it also might be blocking.
Cannot take the chance, as Accept might block indefinitely
and make it impossible to acquire ForkLock exclusively
(during fork+exec).
Fixes#4737.
R=golang-dev, dave, iant, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/7309050
Before and after:
BenchmarkTrimSpace 20000000 81.3 ns/op
BenchmarkTrimSpace 50000000 58.0 ns/op
(most whitespace trimming is ASCII whitespace)
Same optimization appeared a handful of other places
in this file, but not here.
R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7305063
This is necessary for systems that use select as the pollster,
such as Solaris (supported by gccgo). It corresponds to the
bool returned by AddFD. In general it's not clearly defined
what happens when a descriptor used in a select is closed, and
different systems behave differently. Waking up the select
will cause the right thing to happen: the closed descriptor
will be dropped from the next iteration.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7303056
deferred block. This makes hangs in the waiting code less likely
if a goroutine exits abnormally.
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7306052
This CL is the first of a handful of CLs which will provide
the implementation of cookiejar. It contains several helper
functions and the skeleton of Cookies and SetCookies.
Proper host name handling requires the ToASCII transformation
from package idna which currently lives in the go.net
subrepo. This CL thus contains just a TODO for this issue.
R=nigeltao, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7287046
Removes limit on maximum number of goroutines ever existed.
code.google.com/p/goexecutor tests now pass successfully.
Also slightly improves performance.
Before: $ time ./flate.test -test.short
real 0m9.314s
After: $ time ./flate.test -test.short
real 0m8.958s
Fixes#4286.
The runtime is built from llvm rev 174312.
R=rsc
CC=golang-dev
https://golang.org/cl/7218044
Closing the inotify file descriptor can take over a second
when running on Ubuntu Precise in an NFS directory, leading to
the test error in issue 3132. Closing the event channel first
lets a client that does not care about the error channel move
on.
Fixes#3132.
R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/7300045
Plan 9 compilers insist this but as we don't have Plan 9
builders, we'd better let gcc check the prototypes.
Inspired by CL 7289050.
R=golang-dev, seed, dave, rsc, lucio.dere
CC=akumar, golang-dev
https://golang.org/cl/7288056
This updates a bad reference to a method name in the example priority queue test.
The error was introduced in the example refactoring in rev. 2ea8f07b2ffe.
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7279045
A new comment directive //go:noescape instructs the compiler
that the following external (no body) func declaration should be
treated as if none of its arguments escape to the heap.
Fixes#4099.
R=golang-dev, dave, minux.ma, daniel.morsing, remyoudompheng, adg, agl, iant
CC=golang-dev
https://golang.org/cl/7289048
If a Handle's Write to a ResponseWriter fails (e.g. via a
net.Conn WriteDeadline via WriteTimeout on the Server), the
Server was blocking forever waiting for reads on that
net.Conn, even after a Write failed.
Instead, once we see a Write fail, close the connection,
since it's then dead to us anyway.
Fixes#4741
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7301043
If the analysis reached a node twice, then the analysis was cut off.
However, if the second arrival is at a lower depth (closer to escaping)
then it is important to repeat the traversal.
The repeating must be cut off at some point to avoid the occasional
infinite recursion. This CL cuts it off as soon as possible while still
passing all tests.
Fixes#4751.
R=ken2
CC=golang-dev, lvd
https://golang.org/cl/7303043
This provides the mechanism to connect SPDY support to the http
package, without pulling SPDY into the standard library.
R=rsc, agl, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/7287045
This CL adds TCPInfo struct to linux/386,arm.
It's already added to linux/amd64.
Note that not sure the reason but cgo godefs w/ latest gcc
translates a flexible array member in structures correctly,
handles it as a non-incomplete, non-opaque type, on Go 1.
This CL reverts such changes by hand for the Go 1 contract.
R=minux.ma, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/7197046
Deadlines should be extended at the beginning of
a request, not at the beginning of a connection.
Fixes#4676
R=golang-dev, fullung, patrick.allen.higgins, adg
CC=golang-dev
https://golang.org/cl/7220076
Was not re-walking the new AND node, so that its ullman
count was wrong, so that the code generator attempted to
store values in registers across the call.
Fixes#4752.
R=ken2
CC=golang-dev
https://golang.org/cl/7288054
In cmd/go's 'go help testflag':
* Rewrite list of flags to drop test. prefix on every name.
* Sort list of flags.
* Add example of using -bench to match all benchmarks.
In testing:
* Remove mention of undefined 'CPU group' concept.
Fixes#4488.
Fixes#4508.
R=adg
CC=golang-dev
https://golang.org/cl/7288053
* Document Parse's zone interpretation.
* Add ParseInLocation (API change).
* Recognize "wrong" time zone names, like daylight savings time in winter.
* Disambiguate time zone names using offset (like winter EST vs summer EST in Sydney).
The final two are backwards-incompatible changes, but I believe
they are both buggy behavior in the Go 1.0 versions; the old results
were more wrong than the new ones.
Fixes#3604.
Fixes#3653.
Fixes#4001.
R=adg
CC=golang-dev
https://golang.org/cl/7288052
This only affects code (with exception of lookupProtocol)
that is only executed on older versions of Windows.
R=rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7293043
* Avoid treating CALL fn(SB) as justification for introducing
and tracking a registerized variable for fn(SB).
* Remove USED(n) after declaration and zeroing of n.
It was left over from when the compiler emitted more
aggressive set and not used errors, and it was keeping
the optimizer from removing a redundant zeroing of n
when n was a pointer or integer variable.
Update #597.
R=ken2
CC=golang-dev
https://golang.org/cl/7277048
It accepts all the build flags.
Say that instead of making a copy that will go stale.
Fixes#4742.
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7229081
Those symbols are only allowed during imports;
the parser may expect them but saying that doesn't help users.
Fixes#3434.
R=ken2
CC=golang-dev
https://golang.org/cl/7277045
For consistency with conversions that look like function calls,
conversions that don't look like function calls now allow an
optional trailing comma.
That is, int(x,) has always been syntactically valid.
Now []int(x,) is valid too.
Fixes#4162.
R=ken2
CC=golang-dev
https://golang.org/cl/7288045
This CL also replaces similar loops in other stdlib
package tests with calls to AllocsPerRun.
Fixes#4461.
R=minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7002055
Expressions involving nil, even if they can be evaluated
at compile time, do not count as Go constants and cannot
be used in const initializers.
Fixes#4673.
Fixes#4680.
R=ken2
CC=golang-dev
https://golang.org/cl/7278043
The spec mostly uses the term embedded.
It's too late to change the field name but at least fix the docs.
Fixes#4514.
R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7235080
Impossible for us to check (without sleazily reaching into the
runtime) but at least document it.
Fixes#3800.
R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/7268043
Change the stack unwinding code to compensate for the dynamic
relocation of symbols.
Change the gc instruction GC_CALL to use a relative offset instead of
an absolute address.
R=golang-dev
CC=golang-dev
https://golang.org/cl/7248048
Everybody either gets confused and thinks this is
TrimLeft/TrimRight or does this by hand which gets
repetitive looking.
R=rsc, kevlar
CC=golang-dev
https://golang.org/cl/7239044
* Separate internal and external LockOSThread, for cgo safety.
* Show goroutine that made faulting cgo call.
* Never start a panic due to a signal caused by a cgo call.
Fixes#3774.
Fixes#3775.
Fixes#3797.
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7228081
Cut out temporary cgo file in error message.
Show C.foo instead of _Ctype_foo.
Before:
x.go:20[/var/folders/00/05_b8000h01000cxqpysvccm000n9d/T/go-build242036121/command-line-arguments/_obj/x.cgo1.go:19]: cannot use tv.Usec (type int32) as type _Ctype___darwin_suseconds_t in assignment
After:
x.go:20: cannot use tv.Usec (type int32) as type C.__darwin_suseconds_t in assignment
Fixes#4255.
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7231075
The old version was using go/ast's CommentGroup.Text method,
but that method drops leading blank lines from the result, so that
if the comment looked like one of
//
// syntax error
import "C"
/*
syntax error
*/
import "C"
then the line numbers for the syntax error would be off by the
number of leading blank lines (1 in each of the above cases).
The new text extractor preserves blank lines.
Fixes#4019.
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7232071
The Unix and Plan 9 readfile call breset(b) but Windows was not,
leaving dregs in the buffer.
TBR=golang-dev
CC=golang-dev
https://golang.org/cl/7229069
If runtime's proc.c does not compile, cmd/dist used to show
the compile errors in a sea of acid output, making them impossible
to find. Change the command invocation to write the acid output
to a file, so that the errors are the only thing shown on failure.
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7221082
A step toward a fix for issue 4069.
To allow linking with arbitrary host object files, add a linker mode
that can generate a host object file instead of an executable.
Then the host linker can be invoked to generate the final executable.
This CL adds a new -hostobj flag that instructs the linker to write
a host object file instead of an executable.
That is, this works:
go tool 6g x.go
go tool 6l -hostobj -o x.o x.6
ld -e _rt0_amd64_linux x.o
./a.out
as does:
go tool 8g x.go
go tool 8l -hostld ignored -o x.o x.8
ld -m elf_i386 -e _rt0_386_linux x.o
./a.out
Because 5l was never updated to use the standard relocation scheme,
it will take more work to get this working on ARM.
This is a checkpoint of the basic functionality. It does not work
with cgo yet, and cgo is the main reason for the change.
The command-line interface will likely change too.
The gc linker has other information that needs to be returned to
the caller for use when invoking the host linker besides the single
object file.
R=iant, iant
CC=golang-dev
https://golang.org/cl/7060044
This is a backwards compatible API change that fixes broken code.
In Go 1.0, ReadFull(r, buf) could return either len(buf), nil or len(buf), non-nil.
Most code expects only the former, so do that and document the guarantee.
Code that was correct before is still correct.
Code that was incorrect before, by assuming the guarantee, is now correct too.
The same applies to ReadAtLeast.
Fixes#4544.
R=golang-dev, bradfitz, minux.ma
CC=golang-dev
https://golang.org/cl/7235074
Someone found software that generates negative numbers for the RSA
modulus in an X.509 certificate. Our error messages were very poor in
this case so this change improves that.
Update #4728
Return more helpful errors when RSA parameters are negative or zero.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7228072
* Reject import paths of the form cmd/x/y.
* Reject 'go install' of command outside GOPATH
* Clearer error rejecting 'go install' of package outside GOPATH.
* Name temporary binary for first file in 'go run' list or for test.
* Provide a way to pass -ldflags arguments with spaces.
* Pass all Go files (even +build ignored ones) to go fix, go fmt, go vet.
* Reject 'go run foo_test.go'.
* Silence 'exit 1' prints from 'go tool' invocations.
* Make go test -xxxprofile leave binary behind for analysis.
* Reject ~ in GOPATH except on Windows.
* Get a little less confused by symlinks.
* Document that go test x y z runs three test binaries.
* Fix go test -timeout=0.
* Add -tags flag to 'go list'.
* Use pkg/gccgo_$GOOS_$GOARCH for gccgo output.
Fixes#3389.
Fixes#3500.
Fixes#3503.
Fixes#3760.
Fixes#3941.
Fixes#4007.
Fixes#4032.
Fixes#4074.
Fixes#4127.
Fixes#4140.
Fixes#4311.
Fixes#4568.
Fixes#4576.
Fixes#4702.
R=adg
CC=golang-dev
https://golang.org/cl/7225074
The linker accepts MOVB involving non-byte-addressable
registers, by generating XCHG instructions to AX or BX.
It does not handle the case where nor AX nor BX are available.
See also revision 1470920a2804.
Assembling
TEXT ·Truc(SB),7,$0
MOVB BP, (BX)(AX*1)
RET
gives before:
08048c60 <main.Truc>:
8048c60: 87 dd xchg %ebx,%ebp
8048c62: 88 1c 03 mov %bl,(%ebx,%eax,1)
8048c65: 87 dd xchg %ebx,%ebp
8048c67: c3 ret
and after:
08048c60 <main.Truc>:
8048c60: 87 cd xchg %ecx,%ebp
8048c62: 88 0c 03 mov %cl,(%ebx,%eax,1)
8048c65: 87 cd xchg %ecx,%ebp
8048c67: c3 ret
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7226066
This adds a simple IntHeap example, and modifies the more complex
PriorityQueue example to make use of the index field it maintains.
Fixes#4331.
R=rsc, adg
CC=golang-dev
https://golang.org/cl/7068048
ICU and collate package: ICU requires strings to be in FCD form.
Not all NFC strings are in this form, leading to incorrect results.
Change to NFD instead.
R=rsc
CC=golang-dev
https://golang.org/cl/7201043
Export data was broken after revision 6b602ab487d6
when -l is specified at least 3 times: it makes the compiler
write out func (*T).Method() declarations in export data, which
is not supported.
Also fix the formatting of recover() in export data. It was
not treated like panic() and was rendered as "<node RECOVER>".
R=golang-dev, lvd, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7067051
Handle return values from recvfrom correctly when the
kernel decides to not return an address.
Fixes#4636.
Fixes#4352.
R=rsc, mikioh.mikioh, dave
CC=golang-dev
https://golang.org/cl/7058062
If os.OpenFile holds ForkLock on files that block opens,
then threads that simultaneously try to do fork-exec will
get hung up (until the open succeeds). Blocked opens are
common enough on Plan 9 that protecting against fd leaks
into fork-execs means not being able to do fork-execs
properly in the general case. Thus, we forgo taking the
lock.
R=rsc, ality
CC=golang-dev
https://golang.org/cl/7235066
An hostport of "[::1]" now results in the same error message
"missing port in address" as the hostport value "127.0.0.1",
so SplitHostPort won't complain about "too many colons
in address" anymore for an IPv6 address missing a port.
Added tests checking the error values.
Fixes#4526.
R=dave, rsc, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/7038045
The JSON unmarshaller failed to allocate an array when there
are no values for the input causing the `[]` unmarshalled
to []interface{} to generate []interface{}(nil) rather than
[]interface{}{}. This wasn't caught in the tests because Decode()
works correctly and because jsonBig never generated zero-sized
arrays. The modification to scanner_test.go quickly triggers
the error:
without the change to decoder.go, but with the change to scanner_test.go:
$ go test
--- FAIL: TestUnmarshalMarshal (0.10 seconds)
decode_test.go:446: Marshal jsonBig
scanner_test.go:206: diverge at 70: «03c1OL6$":null},{"[=» vs «03c1OL6$":[]},{"[=^\»
FAIL
exit status 1
FAIL encoding/json 0.266s
Also added a simple regression to decode_test.go.
R=adg, dave, rsc
CC=golang-dev
https://golang.org/cl/7196050
Binary data in mprof.goc may prevent the garbage collector from freeing
memory blocks. This patch replaces all calls to runtime·mallocgc() with
calls to an allocator private to mprof.goc, thus making the private
memory invisible to the garbage collector. The addrhash variable is
moved outside of the .bss section.
R=golang-dev, dvyukov, rsc, minux.ma
CC=dave, golang-dev, remyoudompheng
https://golang.org/cl/7135063
To allow for stdcall decorated names on Windows, two changes were needed:
1. Change the symbol versioning delimiter '@' in cgo's dynimport output to a '#', and in cmd/ld when it parses dynimports.
2. Remove the "@N" decorator from the first argument of cgo's dynimport output (PE only).
Fixes#4607.
R=minux.ma, adg, rsc
CC=golang-dev
https://golang.org/cl/7047043
Re-assigning the return value of an atomic operation to the same variable being operated is a common mistake:
x = atomic.AddUint64(&x, 1)
Add this check to go vet.
Fixes#4065.
R=dvyukov, golang-dev, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/7097048
This change also resolves some issues with note handling: we now make
sure that there is enough room at the bottom of every goroutine to
execute the note handler, and the `exitstatus' is no longer a global
entity, which resolves some race conditions.
R=rminnich, npe, rsc, ality
CC=golang-dev
https://golang.org/cl/6569068
Range access functions are already available in TSan library
but were not yet used.
Time for go test -race -short:
Before:
compress/flate 24.244s
exp/norm >200s
go/printer 78.268s
After:
compress/flate 17.760s
exp/norm 5.537s
go/printer 5.738s
Fixes#4250.
R=dvyukov, golang-dev, fullung
CC=golang-dev
https://golang.org/cl/7229044
Roll back CL making primitive type unmarshal faster,
because it broke the Unmarshal of malformed data.
Add benchmarks for unmarshal of primitive types.
Update #3949.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7228061
We explicitly spill all parameters to the frame during initial
SSA construction. (Later passes will remove spills.)
We now properly handle local Allocs escaping via Captures.
Also: allocate BasicBlock.Succs inline.
R=iant, iant
CC=golang-dev
https://golang.org/cl/7231050
Useful for debugging of runtime bugs.
+ Do not print "stack segment boundary" unless GOTRACEBACK>1.
+ Do not traceback system goroutines unless GOTRACEBACK>1.
R=rsc, minux.ma
CC=golang-dev
https://golang.org/cl/7098050
Otherwise it's impossible to know how much data from the
json.Decoder's underlying Reader was actually consumed.
The old fix from golang.org/issue/1955 just added docs. This
provides an actual mechanism.
Update #1955
R=golang-dev, adg, rsc
CC=golang-dev
https://golang.org/cl/7181053
The dumping routine incorrectly assumed that all incoming
symbols would be non-nil and load through it to retrieve the
symbol name. Instead of using the symbol to retrieve a name,
use the name provided by the caller.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7224043
Add 'math/big' to blacklist of packages that use shift
operations as yet unsupported by go/types.
(The failure was masked due to local bugfixes in my client.)
R=rsc, bradfitz, bradfitz
CC=golang-dev
https://golang.org/cl/7220057
This CL includes the implementation of Literal, all the
Value.String and Instruction.String methods, the sanity
checker, and other misc utilities.
R=gri, iant, iant
CC=golang-dev
https://golang.org/cl/7199052
Added tests, using input data from strconv.ParseFloat.
Thanks to rsc for most of the test code.
math/big could use some good package-level documentation.
R=remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/6930059
Mark candidate spans one GC pass earlier.
Move scavenger's code out from mgc0 and constrain it into mheap (where it belongs).
R=rsc, dvyukov, minux.ma
CC=golang-dev
https://golang.org/cl/7002049
Add race.bash so anyone with suitable hardware can run a race detector build. race.bash can be called from the dashboard builder by passing -cmd="race.bash".
Original source for race.bash is here, http://code.google.com/p/go-wiki/wiki/DashboardBuilders
TODO: add race.bat for windows/amd64
R=dvyukov, minux.ma, adg, rsc
CC=fullung, golang-dev
https://golang.org/cl/7179052
This is for SPARC64, a 64-bit processor that uses all 64-bits
of virtual addresses. The idea is to use the low order 3 bits
to at least get a small ABA counter. That should work since
pointers are aligned. The idea is for SPARC64 to set CNT_MASK
== 7, PTR_BITS == 0, PTR_MASK == 0xffffffffffffff8.
Also add uintptr casts to avoid GCC warnings. The gccgo
runtime code is compiled with GCC, and GCC warns when casting
between a pointer and a type of a different size.
R=dvyukov
CC=golang-dev
https://golang.org/cl/7225043
It is now possible to run "go test -cpu=1,2,4 std"
successfully.
Fixes#3185.
R=golang-dev, dave, minux.ma, bradfitz
CC=golang-dev
https://golang.org/cl/7196052
These changes to test.bash were intended to be submitted with CL 6941058, but were accidentally excluded from the original CL.
R=golang-dev
CC=golang-dev
https://golang.org/cl/7232043
net/http currently assumes that the response to a HEAD request
will always have a Content-Length header. This is incorrect.
RFC2616 says: "The HEAD method is identical to GET except that
the server MUST NOT return a message-body in the response. The
metainformation contained in the HTTP headers in response to a
HEAD request SHOULD be identical to the information sent in
response to a GET request. This method can be used for
obtaining metainformation about the entity implied by the
request without transferring the entity-body itself. This
method is often used for testing hypertext links for validity,
accessibility, and recent modification."
This means that three cases are possible: a Content-Length
header, a Transfer-Encoding header or neither. In the wild the
following sites exhibit these behaviours (curl -I):
HEAD on http://www.google.co.uk/ has Transfer-Encoding: chunked
HEAD on http://www.bbc.co.uk/ has Content-Length: 45247
HEAD on http://edition.cnn.com/ has neither header
This patch does not remove the ErrMissingContentLength error
for compatibility reasons, but it is no longer used.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7182045
This function is absolutely critical for clients such as
exp/ssa, and too complex for clients to duplicate.
As with CL 7200046, gri expressed in the doc below [gophers
only] before going on leave that he intended to expose such a
predicate, though his wording suggests as an interface method
of Type rather than a standalone function. (My preference is
for binary methods to be standalone; see "On Binary Methods",
Kim Bruce, 1995). In any case if he wishes to move it that's
easily accommodated by clients.
https://docs.google.com/a/google.com/document/d/1-DQ4fxlMDs9cYtnkKhAAehX6MArjOQyJsRXp-6kiJLA/edit#heading=h.k3bwja7xony9
R=iant, gri, iant
CC=golang-dev
https://golang.org/cl/7203051
On Windows, crypto/x509 passes through to Windows's CryptoAPI
to verify certificate chains. This method can't produce a
SystemRootsError, so make sure we always skip the test on
Windows.
This is needed because testVerify is called in both
TestGoVerify and TestSystemVerify on Windows - one is for
testing the Go verifier, the other one is for testing the
CryptoAPI verifier. The orignal CL tried to sidestep
this issue by setting systemSkip to true, but that only
affected TestSystemVerify.
R=golang-dev, agl, snaury, minux.ma
CC=golang-dev
https://golang.org/cl/7185043
further to how (I believe) it will end up being.
It is nicer to separate search from sorting functionality. Collation needs tables that
are not needed by search and vice-versa. The common functionality is separated out
in the Weigher interface. As this interface is very low-level, it will be moved to
a sub package (colltab) in a next CL.
The types that will move to this package are Weigher, Elem, and Level. The addition
of Elem allows for removing some of the duplicate code between collate and collate/build.
This CL also introduces some stubs for a higher-level API for options. The default
proposed options are quite complex and require the user to have a decent understanding
of Unicode collation. The new options hide a lot of the complexity.
R=rsc
CC=golang-dev
https://golang.org/cl/7058051
Fixes the fork-exec/wait race condition for ForkExec
as well, by making it use startProcess. This makes the
comment for StartProcess consistent as well.
Further, the passing of Waitmsg data in startProcess
and WaitProcess is protected against possible forks
from outside of ForkExec and StartProcess, which might
cause interference with the Await call.
R=rsc, rminnich, npe, ality
CC=golang-dev
https://golang.org/cl/7128059
BenchmarkString before:
11990 ns/op 1621 B/op 73 allocs/op
Using bytes.Buffer:
8774 ns/op 1994 B/op 40 allocs/op
I also tried making a version of escape() that writes directly to the
bytes.Buffer, but it only saved 1 alloc/op and increased CPU time by
about 10%. Didn't seem worth the extra code path.
R=bradfitz
CC=golang-dev
https://golang.org/cl/7182050
Parse("file:///foo") previously returned a URL with Scheme "file"
and Path "///foo". Now it returns a URL with Path "/foo",
such that
&URL{Scheme: "file", Path: "/foo"}.String() == "file:///foo"
This means that parsing and stringifying the URL "file:/foo"
returns "file:///foo", technically a regression but one that only
affects a corner case.
Fixes#4189.
R=bradfitz, rsc
CC=golang-dev
https://golang.org/cl/7135051
This proposal adds two methods to *testing.T, Skip(string) and Skipf(format, args...). The intent is to replace the existing log and return idiom which currently has 97 cases in the standard library. A simple example of Skip would be:
func TestSomethingLong(t *testing.T) {
if testing.Short() {
t.Skip("skipping test in short mode.")
// not reached
}
... time consuming work
}
Additionally tests can be skipped anywhere a *testing.T is present. An example adapted from the go.crypto/ssh/test package would be:
// setup performs some before test action and returns a func()
// which should be defered by the caller for cleanup.
func setup(t *testing.T) func() {
...
cmd := exec.Command("sshd", "-f", configfile, "-i")
if err := cmd.Run(); err != nil {
t.Skipf("could not execute mock ssh server: %v", err)
}
...
return func() {
// stop subprocess and cleanup
}
}
func TestDialMockServer(t *testing.T) {
cleanup := setup(t)
defer cleanup()
...
}
In verbose mode tests that are skipped are now reported as a SKIP, rather than PASS.
Link to discussion: https://groups.google.com/d/topic/golang-nuts/BqorNARzt4U/discussion
R=adg, rsc, r, n13m3y3r
CC=golang-dev, minux.ma
https://golang.org/cl/6501094
Go 1.0 behavior was to create an UnmarshalFieldError when a json value name matched an unexported field name. This error will no longer be created and the field will be skipped instead.
Fixes#4660.
R=adg, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7139049
It wasn't removing names from func parameters for func types,
and it was handling "a, b string" as "string", not "string, string".
Fixes#4688
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7181051
The Plan 9 compilers complain about not
having type information for the function,
which sets off type signature problems
during the linking stage.
R=rsc, ality, iant
CC=golang-dev
https://golang.org/cl/7058054
Before:
$ go list -f '{{range .Deps}}{{println $.Name .}}{{end}}' math time
math runtime
math unsafe
time errors
time runtime
time sync
time sync/atomic
time syscall
time unsafe
$
After:
$ go list -f '{{range .Deps}}{{println $.Name .}}{{end}}' math time
math runtime
math unsafe
time errors
time runtime
time sync
time sync/atomic
time syscall
time unsafe
$
R=minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7130052
All packages place testdata in a specific directory with the name
"testdata". The mime and strconv packages have been updated to use
the same convention.
mime: Move "mime/test.types" to "mime/testdata/test.types". Update test
code accordingly.
strconv: Move "strconv/testfp.txt" to "strconv/testdata/testfp.txt".
Update test code accordingly.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7098072
This fixes the incorrect unix timestamp of the standard time and adds
an example for (Time) Format to clarify how timezones work in format strings.
Fixes#4364.
R=golang-dev, remyoudompheng, kevlar, rsc
CC=golang-dev
https://golang.org/cl/7069046
Offsets for return values from seek were miscalculated
and a translation from 32-bit code for error handling
was incorrect.
R=rsc, rminnich, npe
CC=golang-dev
https://golang.org/cl/7181045
Previously, Go TLS servers always took the client's preferences into
account when selecting a ciphersuite. This change adds the option of
using the server's preferences, which can be expressed by setting
tls.Config.CipherSuites.
This mirrors Apache's SSLHonorCipherOrder directive.
R=golang-dev, nightlyone, bradfitz, ality
CC=golang-dev
https://golang.org/cl/7163043
Currently it's summed to mark phase.
The change makes it easier to diagnose long stop-the-world phases.
R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/7182043
1. note that to use C.free <stdlib.h> must be included
2. can also extract errno from a void C function
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6935045
sizeof(Adr) from 24 bytes down to 20 bytes.
sizeof(Prog) from 84 bytes down to 76 bytes.
5l linking cmd/godoc statistics:
Before:
Maximum resident set size (kbytes): 106668
After:
Maximum resident set size (kbytes): 99412
R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7100059
so that the user don't need to decipher something like this:
template: main:1: expected %!s(parse.itemType=14) in end; got "|"
now they get this:
template: main:1: unexpected "|" in end
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7128054
I messed this up from the beginning. The receiver isn't a pointer so
setting Err is useless. In order to maintain the API, just remove the
superfluous code.
Fixes#4657.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7161043
Prog
* Remove the unused Prog* dlink
* note that align is also unused, but removing it does not help due to alignment issues.
Saves 4 bytes, sizeof(Prog): 84 => 80.
Sym
* Align {u,}char fields on word boundaries
Saves 4 bytes, sizeof(Sym): 136 => 132.
Tested on linux/arm and freebsd/arm.
R=minux.ma, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/7106050
Fortunately we have never seen the panic on sockaddrToTCP
in the past year.
««« original CL description
net: panic if sockaddrToTCP returns nil incorrectly
Part of diagnosing the selfConnect bug
TBR=dsymonds
R=golang-dev
CC=golang-dev
https://golang.org/cl/5687057
»»»
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7137063
cmd/8g/gsubr.c: unreachable code
cmd/8g/reg.c: overspecifed class
cmd/dist/plan9.c: unused parameter
cmd/gc/fmt.c: stkdelta is now a vlong
cmd/gc/racewalk.c: used but not set
R=golang-dev, seed, rsc
CC=golang-dev
https://golang.org/cl/7067052
The FmtLong flag should only be used with the %D verb
when printing an ATEXT Prog. It was erroneously used
for every Prog except ADATA. This caused a preponderance
of exclamation points, "!!", in the assembly listings.
I also cleaned up the code so that the list.c files look
very similar. Now the real differences are easily spotted
with a simple diff.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7128045
For simplicity, only recognizes expressions of the exact form
"(x << a) | (x >> b)" where x is a variable and a and b are
integer constant expressions that add to x's bit width.
Fixes#4629.
$ cat rotate.c
unsigned int
rotate(unsigned int x)
{
x = (x << 3) | (x >> (sizeof(x) * 8 - 3));
return x;
}
## BEFORE
$ go tool 6c -S rotate.c
(rotate.c:2) TEXT rotate+0(SB),$0-8
(rotate.c:2) MOVL x+0(FP),!!DX
(rotate.c:4) MOVL DX,!!AX
(rotate.c:4) SALL $3,!!AX
(rotate.c:4) MOVL DX,!!CX
(rotate.c:4) SHRL $29,!!CX
(rotate.c:4) ORL CX,!!AX
(rotate.c:5) RET ,!!
(rotate.c:5) RET ,!!
(rotate.c:5) END ,!!
## AFTER
$ go tool 6c -S rotate.c
(rotate.c:2) TEXT rotate+0(SB),$0-8
(rotate.c:4) MOVL x+0(FP),!!AX
(rotate.c:4) ROLL $3,!!AX
(rotate.c:5) RET ,!!
(rotate.c:5) RET ,!!
(rotate.c:5) END ,!!
R=rsc, minux.ma
CC=golang-dev
https://golang.org/cl/7069056
If the scanned block has no typeinfo the garbage collector will attempt
to get the actual type of the block.
R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/7093045
On Plan 9, only the parent of a given process can enter its wait
queue. When a Go program tries to fork-exec a child process
and subsequently waits for it to finish, the goroutines doing
these two tasks do not necessarily tie themselves to the same
(or any single) OS thread. In the case that the fork and the wait
system calls happen on different OS threads (say, due to a
goroutine being rescheduled somewhere along the way), the
wait() will either return an error or end up waiting for a
completely different child than was intended.
This change forces the fork and wait syscalls to happen in the
same goroutine and ties that goroutine to its OS thread until
the child exits. The PID of the child is recorded upon fork and
exit, and de-queued once the child's wait message has been read.
The Wait API, then, is translated into a synthetic implementation
that simply waits for the requested PID to show up in the queue
and then reads the associated stats.
R=rsc, rminnich, npe, mirtchovski, ality
CC=golang-dev
https://golang.org/cl/6545051
The test case of issue 4585 was not passing due to
miscalculation of memequal args, and the previous fix
does not handle padding at the end of a struct.
Handling of padding at end of structs also fixes the case
of [n]T where T is such a padded struct.
Fixes#4585.
(again)
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7133059
Reference the 80386 compiler documentation now that the
documentation for the 68020 is offline.
R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7127053
sse2 is a more precise description of the requirement,
and it matches what people will see in, for example
grep sse2 /proc/cpuinfo # linux
sysctl hw.optional.sse2 # os x
R=golang-dev, dsymonds, iant
CC=golang-dev
https://golang.org/cl/7057050
Decode as much as possible of a Huffman symbol in a single table
lookup (much like the zlib implementation), filling more bits
(conservatively, so we don't consume past the end of the stream)
when the code prefix indicates more bits are needed. This
results in about a 50% performance gain in speed benchmarks.
The following set is benchcmp done on a retina MacBook Pro:
benchmark old MB/s new MB/s speedup
BenchmarkDecodeDigitsSpeed1e4 28.41 42.79 1.51x
BenchmarkDecodeDigitsSpeed1e5 30.18 47.62 1.58x
BenchmarkDecodeDigitsSpeed1e6 30.81 48.14 1.56x
BenchmarkDecodeDigitsDefault1e4 30.28 44.61 1.47x
BenchmarkDecodeDigitsDefault1e5 32.18 51.94 1.61x
BenchmarkDecodeDigitsDefault1e6 35.57 53.28 1.50x
BenchmarkDecodeDigitsCompress1e4 30.39 44.83 1.48x
BenchmarkDecodeDigitsCompress1e5 33.05 51.64 1.56x
BenchmarkDecodeDigitsCompress1e6 35.69 53.04 1.49x
BenchmarkDecodeTwainSpeed1e4 25.90 43.04 1.66x
BenchmarkDecodeTwainSpeed1e5 29.97 48.19 1.61x
BenchmarkDecodeTwainSpeed1e6 31.36 49.43 1.58x
BenchmarkDecodeTwainDefault1e4 28.79 45.02 1.56x
BenchmarkDecodeTwainDefault1e5 37.12 55.65 1.50x
BenchmarkDecodeTwainDefault1e6 39.28 58.16 1.48x
BenchmarkDecodeTwainCompress1e4 28.64 44.90 1.57x
BenchmarkDecodeTwainCompress1e5 37.40 55.98 1.50x
BenchmarkDecodeTwainCompress1e6 39.35 58.06 1.48x
R=rsc, dave, minux.ma, bradfitz, nigeltao
CC=golang-dev
https://golang.org/cl/6872063
Calling it will show memory allocation statistics for that
single benchmark (if -test.benchmem is not provided)
R=golang-dev, rsc, kevlar, bradfitz
CC=golang-dev
https://golang.org/cl/7027046
I think that the parser is complete enough to take that warning out.
It passes the test suite.
There may be incompatible API changes, but being in the exp directory
is warning enough for that.
R=nigeltao
CC=golang-dev
https://golang.org/cl/7131050
We need to wait for the handler to actually finish running,
not almost be done running.
This was always a bug, but now that handler output is buffered
it shows up easily on GOMAXPROCS >1 systems.
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7109043
- always set the Pkg field in QualifiedIdents
- call Context.Ident for all identifiers in the AST that denote
a types.Object (bug fix)
- added test that Context.Ident is called for all such identifiers
R=adonovan
CC=golang-dev
https://golang.org/cl/7101054
Completely removed *ast.Objects from being exposed by the
types API. *ast.Objects are still required internally for
resolution, but now the door is open for an internal-only
rewrite of identifier resolution entirely at type-check
time. Once that is done, ASTs can be type-checked whether
they have been created via the go/parser or otherwise,
and type-checking does not require *ast.Object or scope
invariants to be maintained externally.
R=adonovan
CC=golang-dev
https://golang.org/cl/7096048
Also undo revision a5b96b602690 used to workaround the bug.
Fixes#4643.
R=rsc, golang-dev, dave, minux.ma, lucio.dere, bradfitz
CC=golang-dev
https://golang.org/cl/7090043
The existing type checker was relying on augmenting ast.Object
fields (empty interfaces) for its purposes. While this worked
for some time now, it has become increasingly brittle. Also,
the need for package information for Fields and Methods would
have required a new field in each ast.Object. Rather than making
them bigger and the code even more subtle, in this CL we are moving
away from ast.Objects.
The types packge now defines its own objects for different
language entities (Const, Var, TypeName, Func), and they
implement the types.Object interface. Imported packages
create a Package object which holds the exported entities
in a types.Scope of types.Objects.
For type-checking, the current package is still using ast.Objects
to make this transition manageable. In a next step, the type-
checker will also use types.Objects instead, which opens the door
door to resolving ASTs entirely by the type checker. As a result,
the AST and type checker become less entangled, and ASTs can be
manipulated "by hand" or programmatically w/o having to worry
about scope and object invariants that are very hard to maintain.
(As a consequence, a future parser can do less work, and a
future AST will not need to define objects and scopes anymore.
Also, object resolution which is now split across the parser,
the ast, (ast.NewPackage), and even the type checker (for composite
literal keys) can be done in a single place which will be simpler
and more efficient.)
Change details:
- Check now takes a []*ast.File instead of a map[string]*ast.File.
It's easier to handle (I deleted code at all use sites) and does
not suffer from undefined order (which is a pain for testing).
- ast.Object.Data is now a *types.Package rather then an *ast.Scope
if the object is a package (obj.Kind == ast.Pkg). Eventually this
will go away altogether.
- Instead of an ast.Importer, Check now uses a types.Importer
(which returns a *types.Package).
- types.NamedType has two object fields (Obj Object and obj *ast.Object);
eventually there will be only Obj. The *ast.Object is needed during
this transition since a NamedType may refer to either an imported
(using types.Object) or locally defined (using *ast.Object) type.
- ast.NewPackage is not used anymore - there's a local copy for
package-level resolution of imports.
- struct fields now take the package origin into account.
- The GcImporter is now returning a *types.Package. It cannot be
used with ast.NewPackage anymore. If that functionality is still
used, a copy of the old GcImporter should be made locally (note
that GcImporter was part of exp/types and it's API was not frozen).
- dot-imports are not handled for the time being (this will come back).
R=adonovan
CC=golang-dev
https://golang.org/cl/7058060
This introduces a buffer between writing from a handler and
writing chunks. Further, it delays writing the header until
the first full chunk is ready. In the case where the first
full chunk is also the final chunk (for small responses), that
means we can also compute a Content-Length, which is a nice
side effect for certain benchmarks.
Fixes#2357
R=golang-dev, dave, minux.ma, rsc, adg, balasanjay
CC=golang-dev
https://golang.org/cl/6964043
The peephole optimizer would keep hands off AX and X0 during returns, even though go doesn't return through registers.
R=dave, rsc
CC=golang-dev
https://golang.org/cl/7030046
Changeset f483bfe81114 moved ELF generation to the architecture
independent code and in doing so added a Section* to the Sym
type and an Elf64_Shdr* to the Section type.
This caused the Plan 9 compilers to complain about incompatible
type signatures in the many files that reference the Sym type.
R=rsc, dave
CC=golang-dev
https://golang.org/cl/7057058
Fixes#4186.
Back in the day, before the Go 1.0 release, $GOROOT was mandatory for building from source. Fast forward to now and $GOPATH is mandatory and $GOROOT is optional, and mainly used by those who use the binary distribution in uncommon places.
For example, most novices at least know about `sudo` as they would have used it to install the binary tarball into /usr/local. It is logical they would use the `sudo` hammer to `go get` other Go packages when faced with a permission error talking about the path they just had to use `sudo` on last time.
Even if they had read the documentation and set $GOPATH, go get will not work as expected as `sudo` masks most environment variables.
llucky(~) % ~/go/bin/go env | grep GOPATH
GOPATH="/home/dfc"
lucky(~) % sudo ~/go/bin/go env | grep GOPATH
GOPATH=""
This CL therefore proposes to remove support for using `go get` to download source into $GOROOT.
This CL also proposes an error when GOPATH=$GOROOT, as this is another place where new Go users can get stuck.
Further discussion: https://groups.google.com/d/topic/golang-nuts/VIg3fjHiHRI/discussion
R=rsc, adg, minux.ma
CC=golang-dev
https://golang.org/cl/6941058
The linker split PKGDEF into (prefix, name, def) pairs,
and defines def to begin after a space following the identifier.
This is totally wrong for the following export data:
func "".FunctionName()
var SomethingCompletelyUnrelated int
The linker would parse
name=`"".FunctionName()\n\tvar`
def=`SomethingCompletelyUnrelated int`
since there is no space after FunctionName.
R=minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7068051
Our source no longer needs these flags set to build cleanly using clang.
Tested with
* Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0) on i386
* clang version 3.2 (tags/RELEASE_32/final) on amd64 cross compiling all platforms
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7058053
The old code made it impossible to implement a reverse proxy
with anything less than 4k write granularity to the backends.
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7060059
A constant node of type uintptr with a nil literal could
happen in two cases: []int(nil)[1:] and
uintptr(unsafe.Pointer(nil)).
Fixes#4614.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7059043
There exists a test case for this condition, but it only runs on unix systems, which neatly dovetails into the code always using ':' as the list separator.
R=adg, iant
CC=golang-dev
https://golang.org/cl/7057052
ratio isn't 1x1.
Fixes#4259.
The test data was generated by
cjpeg -quality 50 -sample 2x2 video-005.gray.pgm > video-005.gray.q50.2x2.jpeg
cjpeg -quality 50 -sample 2x2 -progressive video-005.gray.pgm > video-005.gray.q50.2x2.progressive.jpeg
similarly to video-005.gray.q50.* from
http://code.google.com/p/go/source/detail?r=51f26e36ba98
the key difference being the "-sample 2x2".
R=rsc
CC=golang-dev
https://golang.org/cl/7069045
There's no b in race detector.
The new flag matches the one in the go command
(go test -race math).
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/7072043
bytes.Equal is simpler to read and should also be faster because
of short-circuiting and assembly implementations.
Change generated automatically using:
gofmt -r 'bytes.Compare(a, b) == 0 -> bytes.Equal(a, b)'
gofmt -r 'bytes.Compare(a, b) != 0 -> !bytes.Equal(a, b)'
R=golang-dev, dave, adg, rsc
CC=golang-dev
https://golang.org/cl/7038051
Closures are incredibly expensive on linux/arm due to
repetitive flush of instruction cache.
go test -short on ODROID-X:
Before:
ok exp/gotype 17.091s
ok go/types 2.225s
After:
ok exp/gotype 7.193s
ok go/types 1.143s
R=dave, minux.ma, rsc
CC=golang-dev, remy
https://golang.org/cl/7062045
This CL adds a flag parser that matches the semantics of Go's
package flag. It also changes the linkers and compilers to use
the new flag parser.
Command lines that used to work, like
8c -FVw
6c -Dfoo
5g -I/foo/bar
now need to be split into separate arguments:
8c -F -V -w
6c -D foo
5g -I /foo/bar
The new spacing will work with both old and new tools.
The new parser also allows = for arguments, as in
6c -D=foo
5g -I=/foo/bar
but that syntax will not work with the old tools.
In addition to matching standard Go binary flag parsing,
the new flag parser generates more detailed usage messages
and opens the door to long flag names.
The recently added gc flag -= has been renamed -complete.
R=remyoudompheng, daniel.morsing, minux.ma, iant
CC=golang-dev
https://golang.org/cl/7035043
More cleanup in preparation for fixing issue 4069.
This CL replaces the three nearly identical copies of the
asmb ELF code with a single asmbelf function in elf.c.
In addition to the ELF code movement, remove the elfstr
array in favor of a simpler lookup, and identify sections by
name throughout instead of computing fragile indices.
The CL also replaces the three nearly identical copies of the
genasmsym code with a single genasmsym function in lib.c.
The ARM linker still compiles and generates binaries,
but I haven't tested the binaries. They may not work.
R=ken2
CC=golang-dev
https://golang.org/cl/7062047
The Plan 9 symbol table format defines big-endian symbol values
for portability, but we want to be able to generate an ELF object file
and let the host linker link it, as part of the solution to issue 4069.
The symbol table itself, since it is loaded into memory at run time,
must be filled in by the final host linker, using relocation directives
to set the symbol values. On a little-endian machine, the linker will
only fill in little-endian values during relocation, so we are forced
to use little-endian symbol values.
To preserve most of the original portability of the symbol table
format, we make the table itself say whether it uses big- or
little-endian values. If the table begins with the magic sequence
fe ff ff ff 00 00
then the actual table begins after those six bytes and contains
little-endian symbol values. Otherwise, the table is in the original
format and contains big-endian symbol values. The magic sequence
looks like an "end of table" entry (the fifth byte is zero), so legacy
readers will see a little-endian table as an empty table.
All the gc architectures are little-endian today, so the practical
effect of this CL is to make all the generated tables little-endian,
but if a big-endian system comes along, ld will not generate
the magic sequence, and the various readers will fall back to the
original big-endian interpretation.
R=ken2
CC=golang-dev
https://golang.org/cl/7066043
A few USED(xxx) additions and a couple of deletions of variable
initialisations that go unused. One questionable correction,
mirrored in 8l/asm.c, where the result of invocation of a function
shouldn't be used.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6736054
RFC5424 specifies a version number (currently 1) after the facility and
severity in a syslog message (e.g. <7>1 TIMESTAMP ...). This causes
rsyslog to fail to parse syslog message because the rest of the message
is not fully compliant with RFC5424.
For the widest compatibility, drop the version (messages are in the
RFC3164 BSD syslog format (e.g. <7>TIMESTAMP ...). Have tested this with
syslog-ng, rsyslog and syslogd.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7036050
TimeoutHandler was changed from "ns int64" to "dt time.Duration" on
Nov 30, 2011, but the godoc still refers to "ns".
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7031050
* Extended deadline to 30 seconds
* Added logging of the duration of each package import
* Fail the test immediately if directories cannot be read
R=gri, minux.ma
CC=golang-dev
https://golang.org/cl/7030055
It already did so for its sibling, *strings.Reader, as well as *bytes.Buffer.
R=edsrzf, dave, adg, kevlar, remyoudompheng, adg, rsc
CC=golang-dev
https://golang.org/cl/7031045
Add a check for this case and don't try to follow the anonymous
type's non-existent fields.
Fixes#4474.
R=rsc
CC=golang-dev
https://golang.org/cl/6945065
Request.URL had no documentation before and some people were expecting all fields to be populated.
Fixes#3805.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7008046
A new environment variable GO386 is introduced to choose between
code generation targeting 387 or SSE2. No auto-detection is
performed and the setting defaults to 387 to preserve previous
behaviour.
The patch is a reorganization of CL6549052 by rsc.
Fixes#3912.
R=minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6962043
Unnamed types like structs with embedded fields can have methods.
These methods are generated on-the-fly by the compiler and
it may happen for identical types in different packages.
The linker must accept these multiple definitions.
Fixes#4590.
R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/7030051
sysarch requires arguments to be passed on the stack, not in registers.
Credit to Shenghou Ma (minux) for the fix.
R=minux.ma, devon.odell
CC=golang-dev
https://golang.org/cl/7037043
Under FreeBSD-CURRENT on arm, cgo enabled binaries segfault. Disable cgo support for the moment so we can have a freebsd/arm builder on the dashboard.
R=minux.ma, rsc, iant
CC=golang-dev
https://golang.org/cl/7031044
Allows encoding and decoding of maps with key of string kind, not just string type.
Fixes#3519.
R=rsc, dave
CC=golang-dev
https://golang.org/cl/6943047
Used to then die on a nil pointer situation. Most Linux standard setups are rather
restrictive regarding the default amount of lockable memory.
R=minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6997049
While half of all numbers don't have their most-significant bit set,
this is becoming increasingly impermissible for RSA moduli. In an
attempt to exclude weak keys, several bits of software either do, or
will, enforce that RSA moduli are >= 1024-bits.
However, Go often generates 1023-bit RSA moduli which this software
would then reject.
This change causes crypto/rsa to regenerate the primes in the event
that the result is shorter than requested.
It also alters crypto/rand in order to remove the performance impact
of this:
The most important change to crypto/rand is that it will now set the
top two bits in a generated prime (OpenSSL does the same thing).
Multiplying two n/2 bit numbers, where each have the top two bits set,
will always result in an n-bit product. (The effectively makes the
crypto/rsa change moot, but that seems too fragile to depend on.)
Also this change adds code to crypto/rand to rapidly eliminate some
obviously composite numbers and reduce the number of Miller-Rabin
tests needed to generate a prime.
R=rsc, minux.ma
CC=golang-dev
https://golang.org/cl/7002050
- introduced type Method for methods
- renamed StructField -> Field
- removed ObjList
- methods are not sorted anymore in interfaces (for now)
R=adonovan
CC=golang-dev
https://golang.org/cl/7023043
This is a just a file move with no other changes
besides the manual import path adjustments in these
two files:
src/pkg/exp/gotype/gotype.go
src/pkg/exp/gotype/gotype_test.go
Note: The go/types API continues to be subject to
possibly significant changes until Go 1.1. Do not
rely on it being stable at this point.
R=adonovan
CC=golang-dev
https://golang.org/cl/7013049
The parser/resolver cannot accurately resolve
composite literal keys that are identifiers;
it needs type information.
Instead, try to resolve them but leave final
judgement to the type checker.
R=adonovan
CC=golang-dev
https://golang.org/cl/6994047
These files are identical, so probably pre date // +build.
With a little work, fd_darwin could be merged as well.
R=mikioh.mikioh, jsing, devon.odell, lucio.dere, minux.ma
CC=golang-dev
https://golang.org/cl/7004053
The new garbage collector (CL 6114046) may find the fake *[]byte value
and interpret its contents as bytes rather than as potential pointers.
This may lead the garbage collector to free memory blocks that
shouldn't be freed.
R=dvyukov, rsc, dave, minux.ma, remyoudompheng, iant
CC=golang-dev
https://golang.org/cl/7000059
Proper local system log semantics still need to be
created for Plan 9. In the meantime, the test suite
(viz., exp/gotype) expects there to be some Go
source for each import path. Thus, here is a stub,
equivalent to syslog_windows, for this purpose.
R=golang-dev, rsc, alex.brainman
CC=golang-dev
https://golang.org/cl/7000062
- added Context type for configuration of type checker
- type check all function and method bodies
- (partial) fixes to shift hinting (still not complete)
- revamped test harness - does not rely on specific position
representation anymore, just a standard (compiler) error
message
- lots of bug fixes
R=adonovan, rsc
CC=golang-dev
https://golang.org/cl/6948071
Motivations:
- Simpler UI. Previous API proved a bit awkward for practical purposes.
- Iter is often used in cases where one want to be able to bail out early.
The old implementaton had too much look-ahead to be efficient.
Disadvantages:
- ASCII performance is bad. This is unavoidable for tiny iterations.
Example is included to show how to work around this.
Description:
Iter now iterates per boundary/segment. It returns a slice of bytes that
either points to the input bytes, the internal decomposition strings,
or the small internal buffer that each iterator has. In many cases, copying
bytes is avoided.
The method Seek was added to support jumping around the input without
having to reinitialize.
Details:
- Table adjustments: some decompositions exist of multiple segments.
Decompositions that are of this type are now marked so that Iter can
handle them separately.
- The old iterator had a different next function for different normal forms
that was assigned to a function pointer called by Next.
The new iterator uses this mechanism to switch between different modes
for handling different type of input as well. This greatly improves
performance for Hangul and ASCII. It is also used for multi-segment
decompositions.
- input is now a struct of sting and []byte, instead of an interface.
This simplifies optimizing the ASCII case.
R=rsc
CC=golang-dev
https://golang.org/cl/6873072
the need to decompose characters for the majority of cases. This considerably
speeds up collation while increasing the table size minimally.
To detect non-normalized strings, rather than relying on exp/norm, the table
now includes CCC information. The inclusion of this information does not
increase table size.
DETAILS
- Raw collation elements are now a struct that includes the CCC, rather
than a slice of ints.
- Builder now ensures that NFD and NFC counterparts are included in the table.
This also fixes a bug for Korean which is responsible for most of the growth
of the table size.
- As there is no more normalization step, code should now handle both strings
and byte slices as input. Introduced source type to facilitate this.
NOTES
- This change does not handle normalization correctly entirely for contractions.
This causes a few failures with the regtest. table_test.go contains a few
uncommented tests that can be enabled once this is fixed. The easiest is to
fix this once we have the new norm.Iter.
- Removed a test cases in table_test that covers cases that are now guaranteed
to not exist.
R=rsc, mpvl
CC=golang-dev
https://golang.org/cl/6971044
Currently it silently "succeeds" saying that it run 0 tests
if there are compilations errors.
With this change it fails and outputs the compilation error.
R=golang-dev, remyoudompheng
CC=golang-dev
https://golang.org/cl/7002058
NO_PROXY="example.com" should match "foo.example.com", just
the same as NO_PROXY=".example.com". This is what curl and
Python do.
Fixes#4574
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7005049
Before this CL, defining the variable worked fine, but then when
the implicit package-level init func was created, that caused a
name collision and a confusing error about the redeclaration.
Also add a test for issue 3705 (func init() needs body).
Fixes#4517.
R=ken2
CC=golang-dev
https://golang.org/cl/7008045
An error during the compilation can be more precise
than an error at link time.
For 'func init', the error happens always: you can't forward
declare an init func because the name gets mangled.
For other funcs, the error happens only with the special
(and never used by hand) -= flag, which tells 6g the
package is pure go.
The go command now passes -= for pure Go packages.
Fixes#3705.
R=ken2
CC=golang-dev
https://golang.org/cl/6996054
Ordinary variable load was assumed to be not worth saving,
but not if one of the function calls later might change
its value.
Fixes#4313.
R=ken2
CC=golang-dev
https://golang.org/cl/6997047
When we release memory to the OS, if the OS doesn't want us
to release it (for example, because the program executed
mlockall(MCL_FUTURE)), madvise will fail. Ignore the failure
instead of crashing.
Fixes#3435.
R=ken2
CC=golang-dev
https://golang.org/cl/6998052
Any flag.Value that has an IsBoolFlag method that returns true
will be treated as a bool flag type during parsing.
Fixes#4262.
R=bradfitz, rsc
CC=golang-dev
https://golang.org/cl/6944064
The patch makes the compile user an ordinary package-local
symbol for the name of embedded fields of builtin type.
This is incompatible with the fix delivered for issue 2687
(revision 3c060add43fb) but fixes it in a different way, because
the explicit symbol on the field makes the typechecker able to
find it in lookdot.
Fixes#3552.
R=lvd, rsc, daniel.morsing
CC=golang-dev
https://golang.org/cl/6866047
The typechecking code was doing an extra, unnecessary
indirection.
Fixes#4458.
R=golang-dev, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/6998051
remove zerostack compiler experiment; will do at link time instead
««« original CL description
cmd/gc: add GOEXPERIMENT=zerostack to clear stack on function entry
This is expensive but it might be useful in cases where
people are suffering from false positives during garbage
collection and are willing to trade the CPU time for getting
rid of the false positives.
On the other hand it only eliminates false positives caused
by other function calls, not false positives caused by dead
temporaries stored in the current function call.
The 5g/6g/8g changes were pulled out of the history, from
the last time we needed to do this (to work around a goto bug).
The code in go.h, lex.c, pgen.c is new but tiny.
R=ken2
CC=golang-dev
https://golang.org/cl/6938073
»»»
R=ken2
CC=golang-dev
https://golang.org/cl/7002051
When using subexpressions ($1) as replacements, when they either don't exist or values weren't found causes a panic.
This patch ensures that the match location isn't -1, to prevent out of bounds errors.
Fixes#3816.
R=franciscossouza, rsc
CC=golang-dev
https://golang.org/cl/6931049
EDE2 is a rare DES mode that can be implemented with crypto/des, but
it's somewhat non-obvious so this CL adds an example of doing so.
Fixes#3537.
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6721056
Fixes#3559.
This makes Marshal handle fields marked ",any" instead of ignoring
them. That makes Marshal more symmetrical with Unmarshal, which seems
to have been a design goal.
Note some test cases were changed, because this patch changes
marshalling behavior. I think the previous behavior was buggy, but
there's still a backward-compatibility question to consider.
R=rsc
CC=golang-dev, n13m3y3r
https://golang.org/cl/6938068
This disables checks for limited address space
and unlimited stack. They are not required for Go.
Fixes#4577.
R=golang-dev, iant
CC=golang-dev, kamil.kisiel, minux.ma
https://golang.org/cl/7003045
A fatal error used to happen when escassign-ing a multiple
function return to a single node. However, the situation
naturally appears when using "go f(g())" or "defer f(g())",
because g() is escassign-ed to sink.
Fixes#4529.
R=golang-dev, lvd, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6920060
This guarantees that powers of two return exact answers.
We could do a multiprecision approximation for the
rest of the answer too, but this seems like it should be
good enough.
Fixes#4567.
R=golang-dev, iant, remyoudompheng
CC=golang-dev
https://golang.org/cl/6943074
Enable cgo on OpenBSD.
The OpenBSD ld.so(1) does not currently support PT_TLS sections. Work
around this by fixing up the TCB that has been provided by librthread
and reallocating a TCB with additional space for TLS. Also provide a
wrapper for pthread_create, allowing zeroed TLS to be allocated for
threads created externally to Go.
Joint work with Shenghou Ma (minux).
Requires change 6846064.
Fixes#3205.
R=golang-dev, minux.ma, iant, rsc, iant
CC=golang-dev
https://golang.org/cl/6853059
The OpenBSD ld.so(1) does not currently support PT_TLS and refuses
to load ELF binaries that contain PT_TLS sections. Do not emit PT_TLS
sections - we will handle this appropriately in runtime/cgo instead.
R=golang-dev, minux.ma, iant
CC=golang-dev
https://golang.org/cl/6846064
Fixes#4345.
Benchmarks are promising,
benchmark old ns/op new ns/op delta
BenchmarkPrint 14716391 14747131 +0.21%
benchmark old ns/op new ns/op delta
BenchmarkParse 8846219 8809343 -0.42%
benchmark old MB/s new MB/s speedup
BenchmarkParse 6.61 6.64 1.00x
Also includes additional tests to improve token.FileSet coverage.
R=dvyukov, gri
CC=golang-dev
https://golang.org/cl/6968044
Fixes#4481.
hello-world-core.gz was generated with a simple hello world c program and core dumped as suggested in the issue.
Also: add support for gz compressed test fixtures.
R=minux.ma, rsc, iant
CC=golang-dev
https://golang.org/cl/6936058
Details:
- fixed variadic parameter passing and calls of the form f(g())
- fixed implementation of ^x for unsigned constants x
- fixed assignability of untyped booleans
- resolved a few TODOs, various minor fixes
- enabled many more tests (only 6 std packages don't typecheck)
R=rsc
CC=golang-dev
https://golang.org/cl/6930053
This is expensive but it might be useful in cases where
people are suffering from false positives during garbage
collection and are willing to trade the CPU time for getting
rid of the false positives.
On the other hand it only eliminates false positives caused
by other function calls, not false positives caused by dead
temporaries stored in the current function call.
The 5g/6g/8g changes were pulled out of the history, from
the last time we needed to do this (to work around a goto bug).
The code in go.h, lex.c, pgen.c is new but tiny.
R=ken2
CC=golang-dev
https://golang.org/cl/6938073
reader.Read() can return both 0,nil and len(buf),err.
To be safe, we use io.ReadFull instead of doing reader.Read directly.
Fixes#3472.
R=bradfitz, rsc, ality
CC=golang-dev
https://golang.org/cl/6285050
This decreases the amount of system calls during the
first call to Getenv. Calling Environ will still read
in all environment variables and populate the cache.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6939048
With this change the runtime can now read GOMAXPROCS, GOGC, etc.
I'm not quite sure how we missed this.
R=seed, lucio.dere, rsc
CC=golang-dev
https://golang.org/cl/6935062
The code:
func main() {
v := make([]int64, 10)
i := 1
_ = v[(i*4)/3]
}
crashes compiler with:
Program received signal SIGSEGV, Segmentation fault.
0x000000000043c274 in walkexpr (np=0x7fffffffc9b8, init=0x0) at src/cmd/gc/walk.c:587
587 *init = concat(*init, n->ninit);
(gdb) bt
#0 0x000000000043c274 in walkexpr (np=0x7fffffffc9b8, init=0x0) at src/cmd/gc/walk.c:587
#1 0x0000000000432d15 in copyexpr (n=0x7ffff7f69a48, t=<optimized out>, init=0x0) at src/cmd/gc/subr.c:2020
#2 0x000000000043f281 in walkdiv (init=0x0, np=0x7fffffffca70) at src/cmd/gc/walk.c:2901
#3 walkexpr (np=0x7ffff7f69760, init=0x0) at src/cmd/gc/walk.c:956
#4 0x000000000043d801 in walkexpr (np=0x7ffff7f69bc0, init=0x0) at src/cmd/gc/walk.c:988
#5 0x000000000043cc9b in walkexpr (np=0x7ffff7f69d38, init=0x0) at src/cmd/gc/walk.c:1068
#6 0x000000000043c50b in walkexpr (np=0x7ffff7f69f50, init=0x0) at src/cmd/gc/walk.c:879
#7 0x000000000043c50b in walkexpr (np=0x7ffff7f6a0c8, init=0x0) at src/cmd/gc/walk.c:879
#8 0x0000000000440a53 in walkexprlist (l=0x7ffff7f6a0c8, init=0x0) at src/cmd/gc/walk.c:357
#9 0x000000000043d0bf in walkexpr (np=0x7fffffffd318, init=0x0) at src/cmd/gc/walk.c:566
#10 0x00000000004402bf in vmkcall (fn=<optimized out>, t=0x0, init=0x0, va=0x7fffffffd368) at src/cmd/gc/walk.c:2275
#11 0x000000000044059a in mkcall (name=<optimized out>, t=0x0, init=0x0) at src/cmd/gc/walk.c:2287
#12 0x000000000042862b in callinstr (np=0x7fffffffd4c8, init=0x7fffffffd568, wr=0, skip=<optimized out>) at src/cmd/gc/racewalk.c:478
#13 0x00000000004288b7 in racewalknode (np=0x7ffff7f68108, init=0x7fffffffd568, wr=0, skip=0) at src/cmd/gc/racewalk.c:287
#14 0x0000000000428781 in racewalknode (np=0x7ffff7f65840, init=0x7fffffffd568, wr=0, skip=0) at src/cmd/gc/racewalk.c:302
#15 0x0000000000428abd in racewalklist (l=0x7ffff7f65840, init=0x0) at src/cmd/gc/racewalk.c:97
#16 0x0000000000428d0b in racewalk (fn=0x7ffff7f5f010) at src/cmd/gc/racewalk.c:63
#17 0x0000000000402b9c in compile (fn=0x7ffff7f5f010) at src/cmd/6g/../gc/pgen.c:67
#18 0x0000000000419f86 in funccompile (n=0x7ffff7f5f010, isclosure=0) at src/cmd/gc/dcl.c:1414
#19 0x0000000000424161 in p9main (argc=<optimized out>, argv=<optimized out>) at src/cmd/gc/lex.c:431
#20 0x0000000000401739 in main (argc=<optimized out>, argv=<optimized out>) at src/lib9/main.c:35
The problem is nil init passed to mkcall().
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6940045
Add a Hello method that allows clients to set the server sent in the EHLO/HELO exchange; the default remains localhost.
Based on CL 5555045 by rsc.
Fixes#4219.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6946057
Details:
- This CL is the conceptual skeleton of code found in CL 6114046
- The garbage collector uses struct Obj to specify memory blocks
- scanblock() is putting found memory blocks into an intermediate buffer
(xbuf) before adding/flushing them to the main work buffer (wbuf)
- The main loop in scanblock() is replaced with a skeleton code that
in the future will be able to recognize the type of objects and
thus will improve the garbage collector's precision.
For now, all objects are simply sequences of pointers so
the precision of the garbage collector remains unchanged.
- The code plugs .gcdata and .gcbss sections into the garbage collector.
scanblock() in this CL is unable to make any use of this.
R=rsc, dvyukov, remyoudompheng
CC=dave, golang-dev, minux.ma
https://golang.org/cl/6856121
This CL breaks Go 1 API compatibility but it doesn't matter because
previous ListenUnixgram doesn't work in any use cases, oops.
The public API change is:
-pkg net, func ListenUnixgram(string, *UnixAddr) (*UDPConn, error)
+pkg net, func ListenUnixgram(string, *UnixAddr) (*UnixConn, error)
Fixes#3875.
R=rsc, golang-dev, dave
CC=golang-dev
https://golang.org/cl/6937059
Tests that here should be automatic retries if a database
driver's connection returns ErrBadConn on Begin. See
"TestTxErrBadConn" in sql_test.go
R=golang-dev
CC=golang-dev
https://golang.org/cl/6942050
This includes GORACE history_size and log_path flags.
R=golang-dev, bradfitz, rsc, remyoudompheng, minux.ma
CC=golang-dev
https://golang.org/cl/6947046
Ignore signals during "go run" and wait for running child
process to exit. Stop executing further tests during "go test",
wait for running tests to exit and report error exit code.
Original CL 6351053 by dfc.
Fixes#3572.
Fixes#3581.
R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6903061
I've been writing some code which involves syncing files (like
rsync) and it became apparent that under Linux I could read
modification times (os.Lstat) with nanosecond precision but
only write them with microsecond precision. This difference
in precision is rather annoying when trying to discover
whether files need syncing or not!
I've patched syscall and os to increases the accuracy of of
os.Chtimes for Linux and Windows. This involved exposing the
utimensat system call under Linux and a bit of extra code
under Windows. I decided not to expose the "at" bit of the
system call as it is impossible to replicate under Windows, so
the patch adds syscall.Utimens() to all architectures along
with a ImplementsUtimens flag.
If the utimensat syscall isn't available (utimensat was added
to Linux in 2.6.22, Released, 8 July 2007) then it silently
falls back to the microsecond accuracy version it uses now.
The improved accuracy for Windows should be good for all
versions of Windows.
Unfortunately Darwin doesn't seem to have a utimensat system
call that I could find so I couldn't implement it there. The
BSDs do, but since they share their syscall implementation
with Darwin I couldn't figure out how to define a syscall for
*BSD and not Darwin. I've left this as a TODO in the code.
In the process I implemented the missing methods for Timespec
under Windows which I needed which just happened to round out
the Timespec API for all platforms!
------------------------------------------------------------
Test code: http://play.golang.org/p/1xnGuYOi4b
Linux Before (1000 ns precision)
$ ./utimetest.linux.before z
Setting mtime 1344937903123456789: 2012-08-14 10:51:43.123456789 +0100 BST
Reading mtime 1344937903123457000: 2012-08-14 10:51:43.123457 +0100 BST
Linux After (1 ns precision)
$ ./utimetest.linux.after z
Setting mtime 1344937903123456789: 2012-08-14 10:51:43.123456789 +0100 BST
Reading mtime 1344937903123456789: 2012-08-14 10:51:43.123456789 +0100 BST
Windows Before (1000 ns precision)
X:\>utimetest.windows.before.exe c:\Test.txt
Setting mtime 1344937903123456789: 2012-08-14 10:51:43.123456789 +0100 GMTDT
Reading mtime 1344937903123456000: 2012-08-14 10:51:43.123456 +0100 GMTDT
Windows After (100 ns precision)
X:\>utimetest.windows.after.exe c:\Test.txt
Setting mtime 1344937903123456789: 2012-08-14 10:51:43.123456789 +0100 GMTDT
Reading mtime 1344937903123456700: 2012-08-14 10:51:43.1234567 +0100 GMTDT
R=golang-dev, alex.brainman, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/6905057
5g: Prog went from 128 bytes to 88 bytes
6g: Prog went from 174 bytes to 144 bytes
8g: Prog went from 124 bytes to 92 bytes
There may be a little more that can be squeezed out of Addr, but alignment will be a factor.
All: remove the unused pun field from Addr
R=rsc, minux.ma
CC=golang-dev
https://golang.org/cl/6922048
TestDialTimeoutFDLeak will fail when system state somaxconn is
greater than expected fixed value.
Fixes#4384 (again).
R=fullung, dave, rsc
CC=golang-dev
https://golang.org/cl/6873069
Fixes#4467.
The syslog tests can fail if the timeout fires before the data arrives at the mock server. Moving the timeout onto the goroutine that is calling ReadFrom() and always processing the data returned before handling the error should improve the reliability of the test.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6920047
Change suggested by iant. The compiler generates
special code for a/b when a is -0x80...0 and b = -1.
A single instruction can cover the case where b is -1,
so only one comparison is needed.
Fixes#3551.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6922049
The code inside the casee and casep labels can perfectly be merged since
they essentially do the same. The character to be stored where cp points is
just the character contained by the c variable.
R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6845112
The code that was commented out was for the old regexp package.
In the new one the errors and the space of valid regexps are different.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6873063
Implementation is mostly identical to passing a non-negative int64 to
SetInt64, and calling Int64 with a non-negative value in the *Int.
Fixes#4389.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6929048
Also, implement a global OPTIONS * handler, like Apache.
Permit sending "*" requests to handlers, but not path-based
(ServeMux) handlers. That means people can go out of their
way to support SSDP or SIP or whatever, but most users will be
unaffected.
See RFC 2616 Section 5.1.2 (Request-URI)
See RFC 2616 Section 9.2 (OPTIONS)
Fixes#3692
R=rsc
CC=golang-dev
https://golang.org/cl/6868095
This check for BADWIDTH might happen while in defercheckwidth, making it raise errors for non-erroneous situations.
Fixes#4495.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6927043
Can happen in both request and response.
Also use it in one place that wasn't.
Fixes#3997.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6903057
Fixes#4492.
% go version
go version devel +6b602ab487d6 Sat Dec 08 14:43:00 2012 +0100 linux/amd64
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6906058
New in Go 1 will be nanosecond precision in the result of time.Now on Linux.
This will break code that stores time in external formats at microsecond
precision, reads it back, and expects to get exactly the same time.
Code like that can be fixed by using time.Now().Round(time.Microsecond)
instead of time.Now() in those contexts.
R=golang-dev, bradfitz, iant, remyoudompheng
CC=golang-dev
https://golang.org/cl/6903050
This changes the output of
rand.Seed(0)
perm := rand.Perm(100)
When giving the same seeds to Go 1.0 and Go 1.1 programs
I would like them to generate the same random numbers.
««« original CL description
math/rand: remove noop iteration in Perm
The first iteration always do `m[0], m[0] = m[0], m[0]`, because
`rand.Intn(1)` is 0.
fun note: IIRC in TAOCP version of this algorithm, `i` goes
backward (n-1->1), meaning that the "already" shuffled part of the
array is never altered betweens iterations, while in the current
implementation the "not-yet" shuffled part of the array is
conserved between iterations.
R=golang-dev
CC=golang-dev
https://golang.org/cl/6845121
»»»
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6905049
gotype can now handle much of the standard library.
- marked packages which have type checker issues
- this CL depends on CL 6846131
R=rsc
CC=golang-dev
https://golang.org/cl/6850130
Also:
- better handling of type assertions
- implemented built-in error type
- first cut at handling variadic function signatures
- several bug fixes
R=rsc, rogpeppe
CC=golang-dev
https://golang.org/cl/6846131
The fixjmp step eliminates redundant chains of JMP
instructions that are produced by the compiler during
code generation.
It is already implemented in gc, and can be adapted to 6c/8c with
the exception that JMPs refer to destination by pc instead of by
pointer. The algorithm is modified to operate on Regs instead of Progs
for this reason. The pcs are already restored later by regopt.
R=goalng-dev, rsc
CC=golang-dev
https://golang.org/cl/6865046
Add missing file that should have been included in CL 6854063 / 5eac1a2d6fc3
R=remyoudompheng, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6891049
The 0-length part is fine, but some callers that write 0 bytes
also pass nil as the data pointer, and the Plan 9 kernel kills the
process with 'invalid address in sys call' in that case.
R=ken2
CC=golang-dev
https://golang.org/cl/6862051
Per the curl man page, the http_proxy configuration can be
of the form:
[protocol://]<host>[:port]
And we had a test that <ip>:<port> worked, but if
the host began with a letter, url.Parse parsed the hostname
as the scheme instead, confusing ProxyFromEnvironment.
R=golang-dev
CC=golang-dev
https://golang.org/cl/6875060
Used to say:
issue4251.go:12: inverted slice range
issue4251.go:12: constant -1 overflows uint64
issue4251.go:16: inverted slice range
issue4251.go:16: constant -1 overflows uint64
issue4251.go:20: inverted slice range
issue4251.go:20: constant -1 overflows uint64
With this patch, only gives the "inverted slice range" errors.
R=golang-dev, daniel.morsing
CC=golang-dev
https://golang.org/cl/6871058
Fixes#4396.
For fixed arrays larger than the unmapped page, agenr would general a nil check by loading the first word of the array. However there is no requirement for the first element of a byte array to be word aligned, so this check causes a trap on ARMv5 hardware (ARMv6 since relaxed that restriction, but it probably still comes at a cost).
Switching the check to MOVB ensures alignment is not an issue. This check is only invoked in a few places in the code where large fixed arrays are embedded into structs, compress/lzw is the biggest offender, and switching to MOVB has no observable performance penalty.
Thanks to Rémy and Daniel Morsing for helping me debug this on IRC last night.
R=remyoudompheng, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6854063
Using append simplifies the code and makes it work if
the initial capacity of the slice is smaller than the
number of items pushed.
R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/6869060
The debian/kFreeBSD project uses the FreeBSD kernel and the debian userspace. From our point of view, this is freebsd not linux as GOOS talks about the kernel syscall interface, not the userspace (although cgo alters that). As debian/kFreeBSD is experimental at this time, I do not think it is worth the effort of duplicating all the freebsd specific code so this is proposal represents a reasonable workaround.
Currently cgo is not supported, make.bash will detect this and disable cgo automatically during the build.
dfc@debian:~/go/src$ uname -a
GNU/kFreeBSD debian 8.1-1-686 #0 Sat Jul 21 17:02:04 UTC 2012 i686 i386 Intel(R) Core(TM) i5-2415M CPU @ 2.30GHz GNU/kFreeBSD
dfc@debian:~/go/src$ ../bin/go version
go version devel +d05272f402ec Sat Dec 01 15:15:14 2012 -0800
Tested with GOOS=freebsd GOARCH=386
R=golang-dev
CC=golang-dev
https://golang.org/cl/6868046
The compiler was confused when inlining a T.Method(f()) call
where f returns multiple values: support for this was marked
as TODO.
Variadic calls are not supported but are not inlined either.
Add a test preventively for that case.
Fixes#4167.
R=golang-dev, rsc, lvd
CC=golang-dev
https://golang.org/cl/6871043
The first iteration always do `m[0], m[0] = m[0], m[0]`, because
`rand.Intn(1)` is 0.
fun note: IIRC in TAOCP version of this algorithm, `i` goes
backward (n-1->1), meaning that the "already" shuffled part of the
array is never altered betweens iterations, while in the current
implementation the "not-yet" shuffled part of the array is
conserved between iterations.
R=golang-dev
CC=golang-dev
https://golang.org/cl/6845121
`godoc net/http` used to complain "/target contains more than one package: http, main"
R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/6852100
64bit atomics are broken on 32bit systems. This is issue 599.
linux/arm builders all broke with this change, I am concerned that the other 32bit builders are silently impacted.
««« original CL description
net: fix data races on deadline vars
Fixes#4434.
R=mikioh.mikioh, bradfitz, dvyukov, alex.brainman
CC=golang-dev
https://golang.org/cl/6855110
»»»
R=rsc, mikioh.mikioh, dvyukov, minux.ma
CC=golang-dev
https://golang.org/cl/6852105
When a race happens inside of runtime (chan, slice, etc),
currently reports contain only user file:line.
If the line contains a complex expression,
it's difficult to figure out where the race exactly.
This change adds one more top frame with exact
runtime function (e.g. runtime.chansend, runtime.mapaccess).
R=golang-dev
CC=golang-dev
https://golang.org/cl/6851125
W/o this change stack traces do not show from where sync.Once()
or atomic.XXX was called.
This change add funcenter/exit instrumentation to sync/sync.atomic
packages.
R=golang-dev
CC=golang-dev
https://golang.org/cl/6854112
RFC 2616: "The 204 response MUST NOT include a message-body,
and thus is always terminated by the first empty line after
the header fields."
Previously we'd trigger chunked encoding by default on
responses, and then when finishing the request we'd write the
chunk trailers, which counted as a message-body.
Fixes#4454
R=golang-dev
CC=golang-dev
https://golang.org/cl/6782139
More lenient parsing with better error recovery.
It's easier for the type check to pick up the slack.
R=iant
CC=golang-dev
https://golang.org/cl/6856108
Test creates 2 tcp connections for put and get. Make sure
these are closed properly after test is over, otherwise
server hangs waiting for connection to be closed.
R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/6842109
Update #4434.
The proposal attempts to reduce the number of places where fd,{r,w}deadline is checked and updated in preparation for issue 4434. In doing so the deadline logic is simplified by letting the pollster return errTimeout from netFD.Wait{Read,Write} as part of the wakeup logic.
The behaviour of setting n = 0 has been restored to match rev 2a55e349097f, which was the previous change to fd_unix.go before CL 6851096.
R=jsing, bradfitz, mikioh.mikioh, rsc
CC=fullung, golang-dev
https://golang.org/cl/6850110
A fix similar to CL 6859043 was effective in resolving the intermittent failure.
Fixes#4423.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6854102
This CL continues with introducing IPv6 scoped addressing capability
into the net package.
Update #4234.
R=rsc
CC=golang-dev
https://golang.org/cl/6842053
Package format is a utility package that takes care of
parsing, sorting of imports, and formatting of .go source
using the canonical gofmt formatting parameters.
Use go/format in various clients instead of the lower-level components.
R=r, bradfitz, dave, rogpeppe, rsc
CC=golang-dev
https://golang.org/cl/6852075
Garbage collection code (to be merged later) is calling functions
which have many local variables. This increases the probability that
the stack capacity won't be big enough to hold the local variables.
So, start gc() on a bigger stack to eliminate a potentially large number
of calls to runtime·morestack().
R=rsc, remyoudompheng, dsymonds, minux.ma, iant, iant
CC=golang-dev
https://golang.org/cl/6846044
The syslog implementation was not correctly implementing the
traditional syslog format because it had a confused notion of
'priority'. syslog priority is not a single number but is, in
fact, the combination of a facility number and a severity. The
previous Go syslog implementation had a single Priority that
appeared to be the syslog severity and no way of setting the
facility. That meant that all syslog messages from Go
programs appeared to have a facility of 0 (LOG_KERN) which
meant they all appeared to come from the kernel.
Also, the 'prefix' was in fact the syslog tag (changed the
internal name for clarity as the term tag is more widely used)
and the timestamp and hostname values were missing from
messages.
With this change syslog messages are generated in the correct
format with facility and severity combined into a priority,
the timestamp in RFC3339 format, the hostname, the tag (with
the PID in [] appened) and the message.
The format is now:
<PRI>1 TIMESTAMP HOSTNAME TAG[PID]: MSG
The TIMESTAMP, HOSTNAME and PID fields are filled in
automatically by the package. The TAG and the MSG are supplied
by the user. This is what rsyslogd calls TraditionalFormat and
should be compatible with multiple systems.
R=rsc, jgc, 0xjnml, mikioh.mikioh, bradfitz
CC=golang-dev
https://golang.org/cl/6782118
This CL defines the API. Implementation will come in follow-up CLs.
Update #1960.
R=bradfitz, dr.volker.dobler, rsc
CC=golang-dev
https://golang.org/cl/6849092
It's better to use IsValid() then checking a (possibly
partially set up) position against NoPos directly.
R=dsymonds
CC=golang-dev
https://golang.org/cl/6855099
This allows 5g and 8g to benefit from the rewrite as shifts
or magic multiplies. The 64-bit arithmetic is not handled there,
and left in 6g.
Update #2230.
R=golang-dev, dave, mtj, iant, rsc
CC=golang-dev
https://golang.org/cl/6819123
Thanks to Dustin Sallings for exposing the most frustrating
bug ever, and for providing repro cases (which formed the
basis of the new tests in this CL), and to Dave Cheney and
Dmitry Vyukov for help debugging and fixing.
This CL depends on submited pollster CLs ffd1e075c260 (Unix)
and 14b544194509 (Windows), as well as unsubmitted 6852085.
Some operating systems (OpenBSD, NetBSD, ?) may still require
more pollster work, fixing races (Issue 4434 and
http://goo.gl/JXB6W).
Tested on linux-amd64 and darwin-amd64, both with GOMAXPROCS 1
and 4 (all combinations of which previously failed differently)
Fixes#4191
Update #4434 (related fallout from this bug)
R=dave, bradfitz, dsallings, rsc, fullung
CC=golang-dev
https://golang.org/cl/6851061
Bools from comparisons can be assigned to all bool types, but this idealness would propagate through logical operators when the result should have been lowered to a non-ideal form.
Fixes#3924.
R=golang-dev, remyoudompheng, r, rsc, mtj
CC=golang-dev
https://golang.org/cl/6855061
Also: Can set base indentation in printer.Config: all code
is going to be indented by at least that amount (except for
raw string literals spanning multiple lines, since their
values must not change).
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6847086
The stack overflow checker in the linker uses the spadj field
to determine whether stack space will be large enough or not.
When spadj=0, the checker treats the function as a nosplit
and emits an error although the program is correct.
Also enable the stack checker in 8l.
Fixes#4316.
R=rsc, golang-dev
CC=golang-dev
https://golang.org/cl/6855088
also:
- composite literal checking close to complete
- cleaned up parameter, method, field checking
- don't let panics escape type checker
- more TODOs eliminated
R=rsc
CC=golang-dev
https://golang.org/cl/6816083
The 8l linker automatically inserts XCHG instructions
to support otherwise impossible byte registers
(only available on AX, BX, CX, DX).
Sometimes AX or DX is needed (for MUL and DIV) so
we need to avoid clobbering them.
R=golang-dev, dave, iant, iant, rsc
CC=golang-dev
https://golang.org/cl/6846057
This CL starts to introduce IPv6 scoped addressing capability
into the net package.
The Public API changes are:
+pkg net, type IPAddr struct, Zone string
+pkg net, type IPNet struct, Zone string
+pkg net, type TCPAddr struct, Zone string
+pkg net, type UDPAddr struct, Zone string
Update #4234.
R=rsc, bradfitz, iant
CC=golang-dev
https://golang.org/cl/6849045
Check the return value from malloc - do not assume that we were
allocated memory just because we asked for it.
Update #4415.
R=minux.ma, daniel.morsing, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/6782100
If the a network read would block, and a packet arrived just before the timeout expired, then the number of bytes from the previous (blocking) read, -1, would be returned.
This change restores the previous logic, where n would be unconditionally set to 0 if err != nil, but was skipped due to a change in CL 6851096.
The test for this change is CL 6851061.
R=bradfitz, mikioh.mikioh, dvyukov, rsc
CC=golang-dev
https://golang.org/cl/6852085
Should make BSDs more reliable. (they seem to reuse ports
quicker than Linux)
Tested by hand with local modifications to force reuse on
Linux. (net/http tests failed before, pass now) Details in the
issue.
Fixes#4436
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6847101
The tests verify that deadlines are "persistent",
read/write deadlines do not interfere, can be reset,
read deadline can be set with both SetDeadline()
and SetReadDeadline(), etc.
R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/6850070
The fix for issue 4403 may include more calls to time.Now().UnixNano(). I was concerned that if this function allocated it would cause additional garbage on the heap. It turns out that it doesn't, which is a nice surprise.
Also add benchmark for Now().UnixNano()
R=bradfitz, minux.ma
CC=golang-dev
https://golang.org/cl/6849097
Otherwise a fast sender or receiver can make sockets always
readable or writable, preventing deadline checks from ever
occuring.
Update #4191 (fixes it with other CL, coming separately)
Fixes#4403
R=golang-dev, alex.brainman, dave, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/6851096
madvise was missing so implement it in assembler. This change
needs to be extended to the other BSD variantes (Net and Open)
Without this change the scavenger will attempt to pass memory back
to the operating system when it has become idle, but the memory is
not returned and for long running Go processes the total memory used
can grow until OOM occurs.
I have only been able to test the code on FreeBSD AMD64. The ARM
platforms needs testing.
R=golang-dev, mikioh.mikioh, dave, jgc, minux.ma
CC=golang-dev
https://golang.org/cl/6850081
Update OpenBSD runtime to use the new version of the sys___tfork
syscall and switch TLS initialisation from sys_arch to sys___set_tcb
(note that both of these syscalls are available in OpenBSD 5.2).
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6843058
Putting aside the unguarded access to fd.sysfile, the condition will never be true as fd.incref above handles the closed condition.
R=mikioh.mikioh, dvyukov
CC=golang-dev
https://golang.org/cl/6845062
The exp/types packages does not support the gccgo export data
format. At some point it should, but not yet.
R=gri, bradfitz, r, iant, dsymonds
CC=golang-dev
https://golang.org/cl/6854068
Noticed this while closing tabs. Yesterday I thought I could
ignore this garbage and hope that a fix for issue 2205 handled
it, but I just realized that's the opposite case,
string->[]byte, whereas this is []byte->string. I'm having a
hard time convincing myself that an Issue 2205-style fix with
static analysis and faking a string header would be safe in
all cases without violating the memory model (callee assumes
frozen memory; are there non-racy ways it could keep being
modified?)
R=dsymonds
CC=dave, gobot, golang-dev
https://golang.org/cl/6850067
Saves 5 seconds on my machine. If Issue 4380 is fixed this
clone can be removed.
Update #4380
R=golang-dev, remyoudompheng, minux.ma, gri
CC=golang-dev
https://golang.org/cl/6845058
There's no good reason to make any printer state adjustments
simply because the file name in node position information has
changed. Eliminate the relevant code.
R=r
CC=golang-dev
https://golang.org/cl/6856054
This enables to loop over some goroutines, e.g. to print the
backtrace of goroutines 1 to 9:
set $i = 1
while $i < 10
printf "backtrace of goroutine %d:\n", $i
goroutine $i++ bt
end
R=lvd, lvd
CC=golang-dev
https://golang.org/cl/6843071
Fixes#4369.
Remove the check for fd.sysfd < 0, the first line of fd.accept() tests if the fd is open correctly and will handle the fd being closed during accept.
R=dvyukov, bradfitz
CC=golang-dev
https://golang.org/cl/6843076
This is part 1 of a series of proposals to fix issue 4369.
In resolving issue 3507 it was decided not to nil out the inner conn.fd field to avoid a race. This implies the checks for fd == nil inside incref/decref are never true.
Removing this logic removes one source of errClosing error values, which affects issue 4373 and moves towards bradfitz's request that fd.accept() return io.EOF when closed concurrently.
Update #4369.
Update #4373.
R=mikioh.mikioh, bradfitz, dvyukov, rsc
CC=golang-dev
https://golang.org/cl/6852057
ASTs may be created by various tools and built from nodes of
different files. An incorrectly constructed AST will likely
not print at all, but a (structurally) correct AST with bad
position information should still print structurally correct.
One heuristic used was to reset indentation when the filename
in the position information of nodes changed. However, this
can lead to wrong indentation for structurally correct ASTs.
Fix: Don't change the indentation in this case.
Related to issue 4300.
R=r
CC=golang-dev
https://golang.org/cl/6849066
This significantly decreases amount of shadow memory
mapped by race detector.
I haven't tested on Windows, but on Linux it reduces
virtual memory size from 1351m to 330m for fmt.test.
Fixes#4379.
R=golang-dev, alex.brainman, iant
CC=golang-dev
https://golang.org/cl/6849057
Add support for loading X.509 key pairs that consist of a certificate
with an EC public key and its corresponding EC private key.
R=agl
CC=golang-dev
https://golang.org/cl/6776043
compare incrementally. Also modified collation API to be more high-level
by removing the need for an explicit buffer to be passed as an argument.
This considerably speeds up Compare and CompareString. This change also eliminates
the need to reinitialize the normalization buffer for each use of an iter. This
also significantly improves performance for Key and KeyString.
R=r, rsc
CC=golang-dev
https://golang.org/cl/6842050
Since we no longer skip the first entry when reading a symbol table,
we no longer need to allow for the offset difference when processing
the GNU version symbols.
Unbreaks builds on Linux.
R=golang-dev, agl, iant
CC=golang-dev
https://golang.org/cl/6843057
Do not skip the first symbol in the symbol table. Any other indexes
into the symbol table (for example, indexes in relocation entries)
will now refer to the symbol following the one that was intended.
Add an object that contains debug relocations, which debug/dwarf
failed to decode correctly. Extend the relocation tests to cover
this case.
Note that the existing tests passed since the symbol following the
symbol that required relocation is also of type STT_SECTION.
Fixes#4107.
R=golang-dev, mikioh.mikioh, iant, iant
CC=golang-dev
https://golang.org/cl/6848044
Currently race detector runtime just disables race detection in the finalizer goroutine.
It has false positives when a finalizer writes to shared memory -- the race with finalizer is reported in a normal goroutine that accesses the same memory.
After this change I am going to synchronize the finalizer goroutine with the rest of the world in racefingo(). This is closer to what happens in reality and so
does not have false positives.
And also add README file with instructions how to build the runtime.
R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6810095
It allows to catch e.g. a data race between atomic write and non-atomic write,
or Mutex.Lock() and mutex overwrite (e.g. mu = Mutex{}).
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6817103
This is a simplified version of earlier versions of this CL
and now only fixes obviously incorrect things, without
changing the locking on bodyEOFReader.
I'd like to see if this is sufficient before changing the
locking.
Update #4191
R=golang-dev, rsc, dave
CC=golang-dev
https://golang.org/cl/6739055
The existing algorithm did not properly propagate the type
count from one level to the next, and as a consequence it
missed collisions.
Properly propagate multiplicity (count) information to the
next level.
benchmark old ns/op new ns/op delta
BenchmarkFieldByName1 182 180 -1.10%
BenchmarkFieldByName2 6273 6183 -1.43%
BenchmarkFieldByName3 49267 46784 -5.04%
Fixes#4355.
R=rsc
CC=golang-dev
https://golang.org/cl/6821094
In order to add these, we need to be able to find references
to such types that already exist in the binary. To do that, introduce
a new linker section holding a list of the types corresponding to
arrays, chans, maps, and slices.
To offset the storage cost of this list, and to simplify the code,
remove the interface{} header from the representation of a
runtime type. It was used in early versions of the code but was
made obsolete by the kind field: a switch on kind is more efficient
than a type switch.
In the godoc binary, removing the interface{} header cuts two
words from each of about 10,000 types. Adding back the list of pointers
to array, chan, map, and slice types reintroduces one word for
each of about 500 types. On a 64-bit machine, then, this CL *removes*
a net 156 kB of read-only data from the binary.
This CL does not include the needed support for precise garbage
collection. I have created issue 4375 to track that.
This CL also does not set the 'algorithm' - specifically the equality
and copy functions - for a new array correctly, so I have unexported
ArrayOf for now. That is also part of issue 4375.
Fixes#2339.
R=r, remyoudompheng, mirtchovski, iant
CC=golang-dev
https://golang.org/cl/6572043
This patch introduces a sort of pre-regopt peephole optimization.
When a temporary is introduced that just holds a value for the
duration of the next instruction and is otherwise unused, we
elide it to make the job of regopt easier.
Since x86 has very few registers, this situation happens very
often. The result is large savings in stack variables for
arithmetic-heavy functions.
crypto/aes
benchmark old ns/op new ns/op delta
BenchmarkEncrypt 1301 392 -69.87%
BenchmarkDecrypt 1309 368 -71.89%
BenchmarkExpand 2913 1036 -64.44%
benchmark old MB/s new MB/s speedup
BenchmarkEncrypt 12.29 40.74 3.31x
BenchmarkDecrypt 12.21 43.37 3.55x
crypto/md5
benchmark old ns/op new ns/op delta
BenchmarkHash8Bytes 1761 914 -48.10%
BenchmarkHash1K 16912 5570 -67.06%
BenchmarkHash8K 123895 38286 -69.10%
benchmark old MB/s new MB/s speedup
BenchmarkHash8Bytes 4.54 8.75 1.93x
BenchmarkHash1K 60.55 183.83 3.04x
BenchmarkHash8K 66.12 213.97 3.24x
bench/go1
benchmark old ns/op new ns/op delta
BenchmarkBinaryTree17 8364835000 8303154000 -0.74%
BenchmarkFannkuch11 7511723000 6381729000 -15.04%
BenchmarkGobDecode 27764090 27103270 -2.38%
BenchmarkGobEncode 11240880 11184370 -0.50%
BenchmarkGzip 1470224000 856668400 -41.73%
BenchmarkGunzip 240660800 201697300 -16.19%
BenchmarkJSONEncode 155225800 185571900 +19.55%
BenchmarkJSONDecode 243347900 282123000 +15.93%
BenchmarkMandelbrot200 12240970 12201880 -0.32%
BenchmarkParse 8837445 8765210 -0.82%
BenchmarkRevcomp 2556310000 1868566000 -26.90%
BenchmarkTemplate 389298000 379792000 -2.44%
benchmark old MB/s new MB/s speedup
BenchmarkGobDecode 27.64 28.32 1.02x
BenchmarkGobEncode 68.28 68.63 1.01x
BenchmarkGzip 13.20 22.65 1.72x
BenchmarkGunzip 80.63 96.21 1.19x
BenchmarkJSONEncode 12.50 10.46 0.84x
BenchmarkJSONDecode 7.97 6.88 0.86x
BenchmarkParse 6.55 6.61 1.01x
BenchmarkRevcomp 99.43 136.02 1.37x
BenchmarkTemplate 4.98 5.11 1.03x
Fixes#4035.
R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6828056
When a nil listener address is passed to some protocol specific
listen function, it will create an unnamed, unbound socket because
of the nil listener address. Other listener functions may return
invalid address error.
This CL allows to pass a nil listener address to all protocol
specific listen functions to fix above inconsistency. Also make it
possible to return a proper local socket address in case of a nil
listner address.
Fixes#4190.
Fixes#3847.
R=rsc, iant
CC=golang-dev
https://golang.org/cl/6525048
The package go.net/ipv4 allows to exist a single UDP listener
that join multiple different group addresses. That means that
LocalAddr on multicast UDPConn returns a first joined group
address is not desirable.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6822108
By keeping a single copy of the strings that commonly show up
in headers, we can avoid one string allocation per header.
benchmark old ns/op new ns/op delta
BenchmarkReadMIMEHeader 19590 10824 -44.75%
BenchmarkUncommon 3168 1861 -41.26%
benchmark old allocs new allocs delta
BenchmarkReadMIMEHeader 32 25 -21.88%
BenchmarkUncommon 5 5 0.00%
R=bradfitz, golang-dev, dave, rsc, jra
CC=golang-dev
https://golang.org/cl/6721055
When HTTP bodies were too large and we didn't want to finish
reading them for DoS reasons, we previously found it necessary
to send a FIN and then pause before closing the connection
(which might send a RST) if we wanted the client to have a
better chance at receiving our error response. That was Issue 3595.
This issue adds the same fix to request headers which
are too large, which might fix the Windows flakiness
we observed on TestRequestLimit at:
http://build.golang.org/log/146a2a7d9b24441dc14602a1293918191d4e75f1
R=golang-dev, alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/6826084
The patch adds more cases to agenr to allocate registers later,
and makes 6g generate addresses for sgen in something else than
SI and DI. It avoids a complex save/restore sequence that
amounts to allocate a register before descending in subtrees.
Fixes#4207.
R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6817080
There was an init race between
check_test.go:init
universe.go:def
use of Universe
and
universe.go:init
creation of Universe
The order in which init funcs are executed in a package is unspecified.
The test is not currently broken in the golang.org environment
because the go tool compiles the test with non-test sources before test sources,
but other environments may, say, sort the source files before compiling,
and thus trigger this race, causing a nil pointer panic.
R=gri
CC=golang-dev
https://golang.org/cl/6827076
As discussed in issue 2540, nulls are allowed for any type in JSON so they should not result in an error during Unmarshal.
Fixes#2540.
R=rsc
CC=golang-dev
https://golang.org/cl/6759043
Arbitrary decisions: order of the arguments and the
fact it takes a block-type argument (rather than
leaving to user to fill it in later); I'm happy whatever
colour we want to paint it.
We also change DecryptPEMBlock so that it won't
panic when the IV has the wrong size.
R=agl, agl
CC=golang-dev
https://golang.org/cl/6820114
xtramodes' C_PBIT optimisation transforms:
MOVW 0(R3),R1
ADD $4,R3,R3
into:
MOVW.P 4(R3),R1
and the AADD optimisation tranforms:
ADD R0,R1
MOVBU 0(R1),R0
into:
MOVBU R0<<0(R1),R0
5g does not appear to generate sequences that
can be transformed by xtramodes' AMOVW.
R=remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/6817085
Otherwise a poorly timed GC can collect the memory before it
is returned to the Go program.
R=golang-dev, dave, dvyukov, minux.ma
CC=golang-dev
https://golang.org/cl/6819119
On ARM, char is unsigned, and the code generation for
multiplication gets totally broken.
Fixes#4354.
R=golang-dev, dave, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6826079
Currently it works incorrectly if user specifies own build tags
and with race detection (e.g. runtime/race is not selected,
because it contains only test files with +build race).
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6814107
When exporting a body containing
x, ok := v.(Type)
the definition for Type was not being included, so when the body
was actually used, it would cause an "unknown type" compiler error.
Fixes#4370.
R=ken2
CC=golang-dev
https://golang.org/cl/6827064
Re-enable the crash tests on NetBSD now that the issue has been
identified and fixed.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6813100
Integrates with the pollserver now.
Uses the old implementation on windows and plan9.
Fixes#2631
R=paul, iant, adg, bendaglish, rsc
CC=golang-dev
https://golang.org/cl/6815049
This is blocking me submitting the net fd timeout
CL, since goapi chokes on my constant.
The much more extensive fix to goapi's type checker
in pending review in https://golang.org/cl/6742050
But I'd rather get this quick fix in first.
R=golang-dev, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/6818104
The code assumed that the only choices were EscNone, EscScope, and EscHeap,
so that it makes sense to set EscScope only if the current setting is EscNone.
Now that we have the many variants of EscReturn, this logic is false, and it was
causing important EscScopes to be ignored in favor of EscReturn.
Fixes#4360.
R=ken2
CC=golang-dev, lvd
https://golang.org/cl/6816103
The old code worked with gc, I assume because the linker
unified identical strings, but it failed with gccgo.
R=rsc
CC=gobot, golang-dev
https://golang.org/cl/6826063
The current implement can fail when the
block size is not a multiple of 8 bytes.
This CL makes it work, and also checks that the
data is in fact a multiple of the block size.
R=agl, agl
CC=golang-dev
https://golang.org/cl/6827058
Avoids problems with local declarations shadowing other names.
We write a more explicit form than the incoming program, so there
may be additional type annotations. For example:
int := "hello"
j := 2
would normally turn into
var int string = "hello"
var j int = 2
but the int variable shadows the int type in the second line.
This CL marks all local variables with a per-function sequence number,
so that this would instead be:
var int·1 string = "hello"
var j·2 int = 2
Fixes#4326.
R=ken2
CC=golang-dev
https://golang.org/cl/6816100
Currently race detector runtime maps shadow memory eagerly at process startup.
It works poorly on Windows, because Windows requires reservation in swap file
(especially problematic if several Go program runs at the same, each consuming GBs
of memory).
With this change race detector maps shadow memory lazily, so Go runtime must notify
about all new heap memory.
It will help with Windows port, but also eliminates scary 16TB virtual mememory
consumption in top output (which sometimes confuses some monitoring scripts).
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6811085
Current racewalk transformation looks like:
x := <-makeChan().c
\/\/\/\/\/\/\/\/\/
runtime.raceread(&makeChan().c)
x := <-makeChan().c
and so makeChan() is called twice.
With this CL the transformation looks like:
x := <-makeChan().c
\/\/\/\/\/\/\/\/\/
chan *tmp = &(makeChan().c)
raceread(&*tmp)
x := <-(*tmp)
Fixes#4245.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6822075
It is refactoring towards generic walk
+ it handles mode nodes.
Partially fixes 4228 issue.
R=golang-dev, lvd, rsc
CC=golang-dev
https://golang.org/cl/6775098
Thank you zhoumichaely for original CL 5175042.
Fixes#1740.
Fixes#2315.
R=golang-dev, bradfitz, mikioh.mikioh
CC=golang-dev, zhoumichaely
https://golang.org/cl/6822045
Unlike when using -http, godoc -url didn't initialize the "filesystem"
and metadata that are used when generating responses. This CL adds this
initialization, so that -url provides the same results as an HTTP
request when using -http.
Fixes#4335.
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6817075
When the first result of a type assertion is blank, the compiler would still copy out a potentially large non-interface type.
Fixes#1021.
R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/6812079
The test for this is test/index.go, which is not run by
default. That test does not currently pass even after this is
applied, due to issue 4348.
Fixes#4344.
R=golang-dev, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/6815085
It speedups the race detector somewhat, but also prevents
getcallerpc() from obtaining lessstack().
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6812091
Currently the build fails with -race if a package in GOPATH
imports another package in GOPATH.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6811083
The deadlock occurs when another goroutine requests GC
during the test. When wait=true the test expects physical parallelism,
that is, that P goroutines are all active at the same time.
If GC is requested, then part of the goroutines are not scheduled,
so other goroutines deadlock.
With wait=false, goroutines finish parallel for w/o waiting for all
other goroutines.
Fixes#3954.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6820098
The race detector does not understand ParFor synchronization, because it's implemented in C.
If run with -cpu=2 currently race detector says:
WARNING: DATA RACE
Read by goroutine 5:
runtime_test.TestParForParallel()
src/pkg/runtime/parfor_test.go:118 +0x2e0
testing.tRunner()
src/pkg/testing/testing.go:301 +0x8f
Previous write by goroutine 6:
runtime_test.func·024()
src/pkg/runtime/parfor_test.go:111 +0x52
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6811082
This CL is a backport of 6012049 which improves code
generation for shift operations.
benchmark old ns/op new ns/op delta
BenchmarkLSL 9 5 -49.67%
BenchmarkLSR 9 4 -50.00%
R=golang-dev, minux.ma, r, rsc
CC=golang-dev
https://golang.org/cl/6813045
It also increases timeout deltas to allow for longer wait.
Also disables this test on plan9.
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6821062
It was well-defined but easy to miss that the return value for
"not found" is len(input) not -1 as many expect.
Fixes#4205.
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6820080
