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Commit Graph

14797 Commits

Author SHA1 Message Date
Russ Cox
4e2aa9bff0 cmd/ld: use native-endian symbol values in symbol table
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
2013-01-04 17:03:57 -05:00
Daniel Morsing
f1e4ee3f49 cmd/5g, cmd/6g, cmd/8g: flush return parameters in case of panic.
Fixes #4066.

R=rsc, minux.ma
CC=golang-dev
https://golang.org/cl/7040044
2013-01-04 17:07:21 +01:00
Lucio De Re
62dfa9c47d cmd/5g, cmd/5l, cmd/ld: Small adjustments for the Plan 9 native tools
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
2013-01-04 11:02:49 -05:00
Russ Cox
a4e08183d5 cmd/dist: sse auto-detect
R=golang-dev, dsymonds, minux.ma, iant, alex.brainman
CC=golang-dev
https://golang.org/cl/7035055
2013-01-04 10:59:10 -05:00
Ian Lance Taylor
63bee953a2 runtime: always incorporate hash seed at start of hash computation
Otherwise we can get predictable collisions.

R=golang-dev, dave, patrick, rsc
CC=golang-dev
https://golang.org/cl/7051043
2013-01-04 07:53:42 -08:00
John Graham-Cumming
c09649890f log/syslog: remove RFC5424 version number for greater compatibility
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
2013-01-04 10:21:43 -05:00
Jan Ziak
89ec208ee8 runtime: introduce typedefs and delete struct keywords in mgc0.c
R=rsc
CC=golang-dev
https://golang.org/cl/7029055
2013-01-04 10:20:50 -05:00
Matthew Dempsky
98edf09e67 net/http: Sync TimeoutHandler godoc with code.
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
2013-01-03 10:06:04 -08:00
Ian Lance Taylor
17eafcd05d CONTRIBUTORS: add Matthew Dempsky (Google CLA)
R=golang-dev, agl
CC=golang-dev
https://golang.org/cl/7049043
2013-01-03 10:05:28 -08:00
Dave Cheney
14b654369d go/types: add more logging to gc import test
* 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
2013-01-03 16:30:25 +11:00
Nigel Tao
699b99fa75 net: fix docs for type IP: s/array/slice/.
R=rsc
CC=golang-dev
https://golang.org/cl/6930047
2013-01-03 14:25:13 +11:00
Robert Griesemer
614b02d22a spec: clarify language about unary operator &
A composite literal may be parenthesized when
used as operand for the unary operator &.

R=rsc, iant, r, ken
CC=golang-dev
https://golang.org/cl/6996053
2013-01-02 18:11:49 -08:00
Rémy Oudompheng
cf77dd37e7 cmd/8g: extend elimination of temporaries to SSE2 code.
Before:
(erf.go:188)    TEXT     Erf+0(SB),$220
(erf.go:265)    TEXT     Erfc+0(SB),$204
(lgamma.go:174) TEXT     Lgamma+0(SB),$948

After:
(erf.go:188)    TEXT     Erf+0(SB),$84
(erf.go:265)    TEXT     Erfc+0(SB),$84
(lgamma.go:174) TEXT     Lgamma+0(SB),$44

SSE before vs. SSE after:

benchmark             old ns/op    new ns/op    delta
BenchmarkAcosh               81           49  -39.14%
BenchmarkAsinh              109          109   +0.00%
BenchmarkAtanh               73           74   +0.68%
BenchmarkLgamma             138           42  -69.20%
BenchmarkModf                24           15  -36.95%
BenchmarkSqrtGo             565          556   -1.59%

R=rsc
CC=golang-dev
https://golang.org/cl/7028048
2013-01-03 00:44:31 +01:00
Russ Cox
5e46d540c8 cmd/dist: use separate args for separate compiler flags
This makes dist safe for CL 7035043 (but keeps working now too).

R=golang-dev, remyoudompheng
CC=golang-dev
https://golang.org/cl/7029047
2013-01-02 17:52:54 -05:00
Brad Fitzpatrick
5e8ca201d1 net/http: make NewRequest pick a ContentLength from a *bytes.Reader too
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
2013-01-02 14:40:27 -08:00
Thomas Kappler
cdec0850f8 encoding/json: don't panic marshaling anonymous non-struct field
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
2013-01-02 17:39:41 -05:00
Russ Cox
a29702f067 A+C: Thomas Kappler (individual CLA)
Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7038049
2013-01-02 17:39:20 -05:00
Rick Arnold
948f0b7a0b net/http: document Request.URL
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
2013-01-02 17:37:27 -05:00
Rémy Oudompheng
15f2c01f44 cmd/8g: fix possibly uninitialized variable in foptoas.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7045043
2013-01-02 23:20:52 +01:00
Rémy Oudompheng
9afb34b42e cmd/dist, cmd/8g: implement GO386=387/sse to choose FPU flavour.
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
2013-01-02 22:55:23 +01:00
Russ Cox
64a0017d6e sync/atomic: document that users must deal with 64-bit alignment
Update #599.

R=dvyukov, iant, minux.ma
CC=golang-dev
https://golang.org/cl/7001056
2013-01-02 15:44:00 -05:00
Rémy Oudompheng
20c76f7f3f cmd/gc: mark wrapper methods for unnamed types as DUPOK.
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
2013-01-02 21:42:26 +01:00
Russ Cox
ae2131ab3b cmd/gc: make redeclaration between import and func less confusing
Fixes #4510.

R=ken2
CC=golang-dev
https://golang.org/cl/7001054
2013-01-02 15:34:28 -05:00
Russ Cox
8850d14fe9 test/run: handle compiledir and errorcheckdir with multi-file packages
Multiple files with the same package all get compiled together.

R=golang-dev, iant, dave
CC=golang-dev
https://golang.org/cl/7005053
2013-01-02 15:31:49 -05:00
Russ Cox
7ced3f12bc api: add go/types to next.txt
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/7035045
2013-01-02 15:28:30 -05:00
Robert Griesemer
a846d479b3 go/types: remove most remaining uses of ast.Object from exported API
Also: Return first error whether an error handler is set in the
      context or not (bug fix).

R=adonovan
CC=golang-dev
https://golang.org/cl/7024043
2013-01-02 09:27:33 -08:00
Dmitriy Vyukov
b2e9ca7f2e doc: add race detector manual
R=minux.ma, franciscossouza, rsc, adg, adg
CC=golang-dev
https://golang.org/cl/6948043
2013-01-02 16:38:47 +04:00
Andrew Gerrand
d5d046e306 doc: update standard copyright header
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/7034044
2013-01-02 16:26:25 +11:00
Andrew Gerrand
53d3bbcb95 A+C: Kamil Kisiel (individual CLA)
Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7038046
2013-01-02 16:04:32 +11:00
Kamil Kisiel
267a55397b cmd/godoc: ignore misnamed examples and print a warning
Fixes #4211.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6970051
2013-01-02 16:00:41 +11:00
Dave Cheney
c2d2bfcc49 runtime: fix freebsd/arm instruction cache flush
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
2013-01-01 21:47:42 +11:00
Dave Cheney
52dc13b5f3 go/build: disable cgo on freebsd/arm
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
2013-01-01 21:46:18 +11:00
Russ Cox
6592456feb cmd/gc: do not generate code for var _ = ... unless necessary
Fixes #2443.

R=ken2
CC=golang-dev
https://golang.org/cl/6997048
2012-12-30 12:01:53 -05:00
Ryan Slade
a4600126d9 encoding/json: encode map key is of string kind, decode only of string type
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
2012-12-30 15:40:42 +11:00
Russ Cox
a22389ec38 runtime: say 'fatal error' instead of 'throw'
Fixes #4597.

R=ken2
CC=golang-dev
https://golang.org/cl/7032043
2012-12-29 21:48:25 -05:00
Dave Cheney
0c6beb00fb cmd/dist: use -pipe during bootstrap
R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7025044
2012-12-30 10:33:33 +11:00
Sébastien Paolacci
e786829e83 runtime: handle locked mmap failure on Linux
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
2012-12-29 14:34:06 -05:00
Adam Langley
975bf6d323 crypto/rsa: ensure that RSA keys use the full number of bits.
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
2012-12-28 19:11:37 -05:00
Péter Surányi
be7c0f31c7 doc: fix id attributes in links to godoc
CL6449105 changed godoc id attributes to ensure uniqueness.
This CL updates links to godoc pages in documents that used
the old id attributes.

R=golang-dev, dsymonds
CC=golang-dev, speter.go1
https://golang.org/cl/7015051
2012-12-29 10:41:39 +11:00
Robert Griesemer
c8eb71b057 go/types: Steps towards removing ast.Object from exported API.
- 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
2012-12-28 14:30:36 -08:00
Robert Griesemer
73aaa44c24 go/types: moved from exp/types
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
2012-12-28 11:41:44 -08:00
Robert Griesemer
d0428379e7 exp/types: resolve composite literal keys
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
2012-12-28 10:40:36 -08:00
Brad Fitzpatrick
eb43ce2d77 io/ioutil: fix Discard data race
Fixes #4589

R=golang-dev, iant, dvyukov
CC=golang-dev
https://golang.org/cl/7011047
2012-12-28 09:33:22 -08:00
Dmitriy Vyukov
91484c6c48 runtime: fix potential crash in sigqueue
Fixes #4383.

R=golang-dev, minux.ma, rsc, iant
CC=golang-dev
https://golang.org/cl/6996060
2012-12-28 15:36:06 +04:00
Dave Cheney
7c4183ac24 net: consolidate fd_{free,net,open}bsd.go into fd_bsd.go
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
2012-12-28 21:01:52 +11:00
Dave Cheney
6535eb3a6d cmd/ld: fix valgrind warning in strnput
Fixes #4592.

Thanks to minux for the suggestion.

R=minux.ma, iant
CC=golang-dev
https://golang.org/cl/7017048
2012-12-28 15:32:24 +11:00
Jan Ziak
90f9beca15 reflect: declare slice as *[]unsafe.Pointer instead of *[]byte
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
2012-12-28 02:35:04 +08:00
Akshat Kumar
5bcb9707b6 log/syslog: add stub for Plan 9
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
2012-12-27 11:45:03 +11:00
Robert Griesemer
3e8304b377 exp/types: some comment fixes
R=adonovan, bradfitz
CC=golang-dev
https://golang.org/cl/7018046
2012-12-26 14:04:50 -08:00
Robert Griesemer
888111e081 exp/types: configurable types.Check API
- 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
2012-12-26 12:48:26 -08:00