Regular expressions involving a (x){0} term are
simplified by removing this term from the
expression, just before the expression is compiled.
The number of subexpressions is evaluated before
the simplification. The number of capture instructions
in the compiled expressions is not necessarily in line
with the number of subexpressions.
When the ReplaceAll(String) methods are used, a number
of capture slots (nmatch) is evaluated as 2*(s+1)
(s being the number of subexpressions).
In some case, it can be higher than the number of capture
instructions evaluated at compile time, resulting in a
panic when the internal slices of regexp.machine
are resized to this value.
Fixed by capping the number of capture slots to the number
of capture instructions.
I must say I do not really see the benefits of setting
nmatch lower than re.prog.NumCap using this 2*(s+1) formula,
so perhaps this can be further simplified.
Fixes#11178Fixes#11176
Change-Id: I21415e8ef2dd5f2721218e9a679f7f6bfb76ae9b
Reviewed-on: https://go-review.googlesource.com/14013
Reviewed-by: Russ Cox <rsc@golang.org>
Per the latest spec change, Go doesn't have -0 constants.
Change-Id: Ic2bcdc3bf507d121ed204f30f6744bb8764202c0
Reviewed-on: https://go-review.googlesource.com/16232
Reviewed-by: Chris Manghane <cmang@golang.org>
Preparation for dealing with binary export format. Accept $$B
as marker for export data. For now, skip that data if found.
Change-Id: I464ba22aaedcf349725379d91070fc900d93b7a2
Reviewed-on: https://go-review.googlesource.com/16222
Reviewed-by: Chris Manghane <cmang@golang.org>
In earlier versions of Go, times were only encoded as an ASN.1 UTCTIME and
crypto/tls/generate_cert.go limited times to the maximum UTCTIME value.
Revision 050b60a3 added support for ASN.1 GENERALIZEDTIME, allowing larger
time values to be represented (per RFC 5280).
As a result, when the httptest certificate was regenerated in revision
9b2d84ef, the Not After date changed to Jan 29 16:00:00 2084 GMT. Update
the comment to reflect this.
Change-Id: I1bd66e011f2749f9372b5c7506f52ea34e264ce9
Reviewed-on: https://go-review.googlesource.com/16193
Reviewed-by: Adam Langley <agl@golang.org>
This CL introduces a new mSpanList type to replace the empty mspan
variables that were previously used as list heads.
To be type safe, the previous circular linked list data structure is
now a tail queue instead. One complication of this is
mSpanList_Remove needs to know the list a span is being removed from,
but this appears to be computable in all circumstances.
As a temporary sanity check, mSpanList_Insert and mSpanList_InsertBack
record the list that an mspan has been inserted into so that
mSpanList_Remove can verify that the correct list was specified.
Whereas mspan is 112 bytes on amd64, mSpanList is only 16 bytes. This
shrinks the size of mheap from 50216 bytes to 12584 bytes.
Change-Id: I8146364753dbc3b4ab120afbb9c7b8740653c216
Reviewed-on: https://go-review.googlesource.com/15906
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Austin Clements <austin@google.com>
When you create C:\A.TXT file on windows, you can open it as c:\a.txt.
EvalSymlinks("c:\a.txt") returns C:\A.TXT. This is all EvalSymlinks
did in the past, but recently symlinks functionality been implemented on
some Windows version (where symlinks are supported). So now EvalSymlinks
handles both: searching for file canonical name and resolving symlinks.
Unfortunately TestEvalSymlinks has not been adjusted properly. The test
tests either canonical paths or symlinks, but not both. This CL separates
canonical paths tests into new TestEvalSymlinksCanonicalNames, so all
functionality is covered. Tests are simplified somewhat too.
Also remove EvalSymlinksAbsWindowsTests - it seems not used anywhere.
Change-Id: Id12e9f1441c1e30f15c523b250469978e4511a84
Reviewed-on: https://go-review.googlesource.com/14412
Reviewed-by: Ian Lance Taylor <iant@golang.org>
It's never used as a *byte anyway, so might as well just make it an
unsafe.Pointer instead.
Change-Id: I68ee418781ab2fc574eeac0498f2515b5561b7a8
Reviewed-on: https://go-review.googlesource.com/16175
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reduces the size of m by ~8% on linux/amd64 (1040 bytes -> 960 bytes).
There are also windows-specific fields, but they're currently
referenced in OS-independent source files (but only when
GOOS=="windows").
Change-Id: I13e1471ff585ccced1271f74209f8ed6df14c202
Reviewed-on: https://go-review.googlesource.com/16173
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Also fix the msan_fail test. It was bogus, since it always aborted one
way or another.
Change-Id: Ic693327d1bddb7bc5c7d859ac047fc93cb9b5b1c
Reviewed-on: https://go-review.googlesource.com/16172
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Change compiler-invoked interface functions to directly take
iface/eface parameters instead of fInterface/interface{} to avoid
needing to always convert.
For the handful of functions that legitimately need to take an
interface{} parameter, add efaceOf to type-safely convert *interface{}
to *eface.
Change-Id: I8928761a12fd3c771394f36adf93d3006a9fcf39
Reviewed-on: https://go-review.googlesource.com/16166
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The -msan option compiles Go code to use the memory sanitizer. This is
intended for use when linking with C/C++ code compiled with
-fsanitize=memory. When memory blocks are passed back and forth between
C/C++ and Go, code in both languages will agree as to whether the memory
is correctly initialized or not, and will report errors for any use of
uninitialized memory.
Change-Id: I2dbdbd26951eacb7d84063cfc7297f88ffadd70c
Reviewed-on: https://go-review.googlesource.com/16169
Reviewed-by: David Crawshaw <crawshaw@golang.org>
The reg-reg version compiled to PSRAW, not PSRLW (arithmetic
instead of logical shift right).
Fixes#13010.
Change-Id: I69a47bd83c8bbe66c7f8d82442ab45e9bf3b94fb
Reviewed-on: https://go-review.googlesource.com/16168
Reviewed-by: Ian Lance Taylor <iant@golang.org>
For android, gc builds with buildmode=pie by default, and
as a result, the compiled packages are not installed in
the usual pkg/$GOOS_$GOARCH pack. Copy the compiled packages
in pkg/android_$GOARCH_shared into the pkg/android_$GOARCH
in the test device.
Change-Id: I909e4cc7095ac95ef63bdf6ddc4cb2c698f3459e
Reviewed-on: https://go-review.googlesource.com/16151
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Add explicit memory sanitizer instrumentation to the runtime and syscall
packages. The compiler does not instrument the runtime package. It
does instrument the syscall package, but we need to add a couple of
cases that it can't see.
Change-Id: I2d66073f713fe67e33a6720460d2bb8f72f31394
Reviewed-on: https://go-review.googlesource.com/16164
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Allows removing a few gratuitous unsafe.Pointer conversions and
parallels the type of reflect.funcType's in and out fields ([]*rtype).
Change-Id: Ie5ca230a94407301a854dfd8782a3180d5054bc4
Reviewed-on: https://go-review.googlesource.com/16163
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
unix/unixgram is not available to standard Android programs.
For golang/go#10807
Change-Id: I6062c3a25cffb86e58cbbd12a07dc90ffbf57185
Reviewed-on: https://go-review.googlesource.com/16114
Reviewed-by: Ian Lance Taylor <iant@golang.org>
These are the runtime support functions for letting Go code interoperate
with the C/C++ memory sanitizer. Calls to msanread/msanwrite are now
inserted by the compiler with the -msan option. Calls to
msanmalloc/msanfree will be from other runtime functions in a subsequent
CL.
Change-Id: I64fb061b38cc6519153face242eccd291c07d1f2
Reviewed-on: https://go-review.googlesource.com/16162
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The ragged barrier after entering the concurrent mark phase is
vestigial. This used to be the point where we enabled write barriers,
so it was necessary to synchronize all Ps to ensure write barriers
were enabled before any marking occurred. However, we've long since
switched to enabling write barriers during the concurrent scan phase,
so the start-the-world at the beginning of the concurrent scan phase
ensures that all Ps have enabled the write barrier.
Hence, we can eliminate the old "install write barrier" phase.
Fixes#11971.
Change-Id: I8cdcb84b5525cef19927d51ea11ba0a4db991ea8
Reviewed-on: https://go-review.googlesource.com/16044
Reviewed-by: Rick Hudson <rlh@golang.org>
The -msan option causes the compiler to add instrumentation for the
C/C++ memory sanitizer. Every memory read/write will be preceded by
a call to msanread/msanwrite.
This CL passes tests but is not usable by itself. The actual
implementation of msanread/msanwrite in the runtime package, and support
for -msan in the go tool and the linker, and tests, will follow in
subsequent CLs.
Change-Id: I3d517fb3e6e65d9bf9433db070a420fd11f57816
Reviewed-on: https://go-review.googlesource.com/16160
Reviewed-by: David Crawshaw <crawshaw@golang.org>
The -msan option causes the linker to link against the runtime/msan
package in order to use the C/C++ memory sanitizer.
This CL passes tests but is not usable by itself. The actual
runtime/msan package, and support for -msan in the go tool and the
compiler, and tests, are in separate CLs.
Change-Id: I02c097393b98c5b80e40ee3dbc167a8b4d23efe0
Reviewed-on: https://go-review.googlesource.com/16161
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
This change fixes shadow assignment check in cases when RHS is not an identifier
or a type assertion.
Fixes#12188
Change-Id: I0940df8d9c237ab8b8d3272eb6895e676c75c115
Reviewed-on: https://go-review.googlesource.com/16038
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This is mechanical change that is a step toward reusing the racewalk
pass for a more general instrumentation pass. The first use will be to
add support for the memory sanitizer.
Change-Id: I75b93b814ac60c1db1660e0b9a9a7d7977d86939
Reviewed-on: https://go-review.googlesource.com/16105
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
packagesAndErrors function doesn't dedup packages.
As a result, `go list io ./io` prints io package twice.
Same applies to `go build` and `go test`.
* dedup packages.
* add a test for go list
Change-Id: I54d4063979b1c9359e5416e12327cb85c4823a0f
Reviewed-on: https://go-review.googlesource.com/16136
Run-TryBot: Andrew Gerrand <adg@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Small fix: looks like a short variable declaration with a type switch
checks to make sure the variable used had valid shape (ONAME, OTYPE, or
ONONAME) and rejects everything else. Then a new variable is declared.
If the symbol contained in the declaration was a named OLITERAL (still a
valid identifier obviously) it would be rejected, even though a new
variable would have been declared.
Fix adds this case to the check.
Added a test case from issue12413.
Fixes#12413
Change-Id: I150dadafa8ee5612c867d58031027f2dca8c6ebc
Reviewed-on: https://go-review.googlesource.com/15760
Reviewed-by: Minux Ma <minux@golang.org>
Run-TryBot: Minux Ma <minux@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
template.Clone() initialized template set incorrectly:
it didn't include itself.
* include itself in template set while cloning
* add a test
Fixes#12996
Change-Id: I932530e4f7f1bbebf833e12b000a5ce052bc9223
Reviewed-on: https://go-review.googlesource.com/16104
Reviewed-by: Andrew Gerrand <adg@golang.org>
In https://golang.org/cl/15860 http2.ConfigureServer was changed to
return an error if explicit CipherSuites are listed and they're not
compliant with the HTTP/2 spec.
This is the net/http side of the change, to look at the return value
from ConfigureServer and propagate it in Server.Serve.
h2_bundle.go will be updated in a future CL. There are too many other
http2 changes pending to be worth updating it now. Instead,
h2_bundle.go is minimally updated by hand in this CL so at least the
net/http change will compile.
Updates #12895
Change-Id: I4df7a097faff2d235742c2d310c333bd3fd5c08e
Reviewed-on: https://go-review.googlesource.com/16065
Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Instead of open-coding conversions from *string to unsafe.Pointer then
to *stringStruct, add a helper function to add some type safety.
Bonus: This caught two **string values being converted to
*stringStruct in heapdump.go.
While here, get rid of the redundant _string type, but add in a
stringStructDWARF type used for generating DWARF debug info.
Change-Id: I8882f8cca66ac45190270f82019a5d85db023bd2
Reviewed-on: https://go-review.googlesource.com/16131
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The '1' part is left over from the C conversion, but no longer makes
sense given that print1.go no longer exists.
Change-Id: Iec171251370d740f234afdbd6fb1a4009fde6696
Reviewed-on: https://go-review.googlesource.com/16036
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Creating symlinks (/data/local/tmp/*) doesn't seem to work
on android-L (tested on nexus5). I cannot find any official
documentation yet but just guess it's a measure for security
attacks using symlinks.
The tests failed with 'permission denied' errors.
For golang/go#10807
Change-Id: I99a9c401c6ecca3c4adc7b21708adaf3dd601279
Reviewed-on: https://go-review.googlesource.com/16115
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The proper term is "untyped boolean".
Change-Id: Id871164190a03c64a8a8987b1ad5d8653a21d96e
Reviewed-on: https://go-review.googlesource.com/16135
Reviewed-by: Robert Griesemer <gri@golang.org>
Additionally, add a test for CTR mode to cover a range of block sizes.
Fixes#12975
Change-Id: I458aac1616228747e62f92f823768d55e874877a
Reviewed-on: https://go-review.googlesource.com/16050
Reviewed-by: Adam Langley <agl@golang.org>
