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Commit Graph

15192 Commits

Author SHA1 Message Date
Rémy Oudompheng
ecbf99ad97 cmd/gc: fix race instrumentation of unaddressable arrays.
Fixes #4578.

R=dvyukov, golang-dev
CC=golang-dev
https://golang.org/cl/7005050
2012-12-24 12:14:41 +01:00
Shenghou Ma
fcc5cf639e doc/articles/wiki/test.bash: suppress unnecessary output
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7000045
2012-12-24 03:48:17 +08:00
Brad Fitzpatrick
82ae6434b3 net/http: match curl and others' NO_PROXY wildcard handling
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
2012-12-22 17:41:00 -08:00
Russ Cox
403f012534 runtime: zero d.free field
Not programming in Go anymore:
have to clear fields in local variables.

R=ken2
CC=golang-dev
https://golang.org/cl/7002053
2012-12-22 18:23:26 -05:00
Russ Cox
e49a183b76 runtime/debug: document that Stack is deprecated
Fixes #4070.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7004050
2012-12-22 17:23:50 -05:00
Russ Cox
3aed92f811 cmd/gc: add diagnostic for var, type, const named init
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
2012-12-22 17:23:33 -05:00
Russ Cox
3fc3597c9b cmd/go: remove debugging flag introduced in CL 6996054
R=remyoudompheng
CC=golang-dev
https://golang.org/cl/7002052
2012-12-22 17:04:56 -05:00
Russ Cox
04098d88fa cmd/gc: make forward declaration in pure Go package an error
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
2012-12-22 16:46:46 -05:00
Russ Cox
1b3244e0db cmd/gc: fix eval order in select
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
2012-12-22 16:46:01 -05:00
Russ Cox
b3bb4bd292 cmd/yacc: fix debug print of token name
The array skips the first TOKSTART entries.

Fixes #4410.

R=golang-dev, ken2, ken
CC=golang-dev
https://golang.org/cl/6999054
2012-12-22 16:45:35 -05:00
Russ Cox
ec59b840f9 runtime: coalesce 0-size allocations
Fixes #3996.

R=ken2
CC=golang-dev
https://golang.org/cl/7001052
2012-12-22 16:42:22 -05:00
Russ Cox
295a4d8e64 runtime: ignore failure from madvise
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
2012-12-22 15:06:28 -05:00
Russ Cox
0de71619ce runtime: aggregate defer allocations
benchmark             old ns/op    new ns/op    delta
BenchmarkDefer              165          113  -31.52%
BenchmarkDefer10            155          103  -33.55%
BenchmarkDeferMany          216          158  -26.85%

benchmark            old allocs   new allocs    delta
BenchmarkDefer                1            0  -100.00%
BenchmarkDefer10              1            0  -100.00%
BenchmarkDeferMany            1            0  -100.00%

benchmark             old bytes    new bytes    delta
BenchmarkDefer               64            0  -100.00%
BenchmarkDefer10             64            0  -100.00%
BenchmarkDeferMany           64           66    3.12%

Fixes #2364.

R=ken2
CC=golang-dev
https://golang.org/cl/7001051
2012-12-22 14:54:39 -05:00
Shenghou Ma
e09f1e7a46 misc/benchcmp: show byte allocation statistics
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6971048
2012-12-22 14:51:16 -05:00
Emil Hessman
4b7c2dfcea testing: fix example test fd leak
Close the read side of the pipe.
Fixes #4551.

R=rsc
CC=golang-dev
https://golang.org/cl/6962049
2012-12-22 13:41:01 -05:00
Stéphane Travostino
475f3df43f encoding/json: A JSON tag can be any valid JSON string.
Fixes #3887.

R=golang-dev, daniel.morsing, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/6997045
2012-12-22 13:36:55 -05:00
Russ Cox
1cad1f8d1c fmt: document width and flags a bit more
Fixes #4581.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7000052
2012-12-22 13:36:39 -05:00
Rick Arnold
a6d986bd8a flag: add implicit boolFlag interface
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
2012-12-22 13:34:48 -05:00
Rémy Oudompheng
9aef20e823 cmd/gc: fix wrong interaction between inlining and embedded builtins.
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
2012-12-22 19:16:31 +01:00
Rémy Oudompheng
ced8004a00 cmd/gc: do not accept (**T).Method expressions.
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
2012-12-22 19:13:45 +01:00
Daniel Morsing
c956dcdc54 cmd/gc: Reject parenthesised .(type) expressions.
Fixes #4470.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6949073
2012-12-22 17:36:10 +01:00
Russ Cox
b9da27bed2 cmd/6l, cmd/8l: add -Z flag to zero stack frame on entry
Replacement for GOEXPERIMENT=zerostack, easier to use.
Does not require a separate toolchain.

R=ken2
CC=golang-dev
https://golang.org/cl/6996051
2012-12-22 11:20:17 -05:00
Russ Cox
e431398e09 undo CL 6938073 / 1542912cf09d
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
2012-12-22 11:18:04 -05:00
Erik St. Martin
54b7ccd514 regexp: fix index panic in Replace
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
2012-12-22 11:14:56 -05:00
Russ Cox
90a85dbefc A+C: Erik St. Martin (individual CLA)
Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7007051
2012-12-22 11:13:25 -05:00
Adam Langley
8f1d170fc6 crypto/des: add an example to demonstrate EDE2 operation.
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
2012-12-22 10:50:11 -05:00
Russ Cox
d324c4af87 encoding/gob: document that structs only encode/decode exported fields
Fixes #4579.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7000051
2012-12-22 10:43:47 -05:00
Russ Cox
407d0c5ab7 cmd/gc: fix error line in switch expr eval
Fixes #4562.

R=ken2
CC=golang-dev
https://golang.org/cl/7008044
2012-12-22 10:01:15 -05:00
Chris Jones
a9121a19f0 encoding/xml: Marshal ",any" fields
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
2012-12-22 10:00:36 -05:00
Mikio Hara
9622f5032e net: fix timeout tests
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7003049
2012-12-22 14:56:02 +09:00
Rémy Oudompheng
4d3cbfdefa cmd/8g: introduce temporaries in byte multiplication.
Also restore the smallintconst case for binary ops.

Fixes #3835.

R=daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/6999043
2012-12-21 23:46:16 +01:00
Dave Cheney
3dcc63f750 cmd/5g: avoid temporaries in agen OINDEX
Most benchmarks are within the 3% margin of error. This code path is quite common in the fmt package.

linux/arm, Freescale iMX.53 (cortex-a8)

fmt:
benchmark                      old ns/op    new ns/op    delta
BenchmarkSprintfEmpty                925          785  -15.14%
BenchmarkSprintfString              5050         5039   -0.22%
BenchmarkSprintfInt                 4425         4406   -0.43%
BenchmarkSprintfIntInt              5802         5762   -0.69%
BenchmarkSprintfPrefixedInt         7029         6541   -6.94%
BenchmarkSprintfFloat              10278        10083   -1.90%
BenchmarkManyArgs                  18558        17606   -5.13%
BenchmarkScanInts               15592690     15415360   -1.14%
BenchmarkScanRecursiveInt       25155020     25050900   -0.41%

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6921056
2012-12-22 09:09:31 +11:00
Robert Griesemer
4f79cef7f2 go/ast: ast.DeclStmt.Decl must be an *ast.GenDecl node (documentation)
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6996046
2012-12-21 11:52:21 -08:00
Rémy Oudompheng
11a40cb34d misc/pprof: don't look for browser in current directory.
Taken from upstream pprof.

Fixes #4564.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6952045
2012-12-21 20:40:44 +01:00
Rémy Oudompheng
64eb7749bc cmd/gc: mapassign2 doesn't exist anymore.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6997043
2012-12-21 20:39:30 +01:00
Shenghou Ma
c9eb6267df cmd/dist: make GOARM detection better compatible with thumb toolchain
Fixes #4557.

R=dave, rsc
CC=golang-dev
https://golang.org/cl/6946078
2012-12-22 02:39:54 +08:00
Dmitriy Vyukov
080d31cc50 runtime/race: update linux runtime to r170876.
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
2012-12-21 19:12:00 +04:00
Dmitriy Vyukov
74dcfc9576 cmd/go: improve wording of race detector documentation
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7006043
2012-12-21 19:11:10 +04:00
Mikio Hara
ebcaf081a7 net: make unix connection tests more robust
Avoids unlink the underlying file before the socket close.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7004044
2012-12-21 14:19:33 +09:00
Alex Brainman
9ad0348403 os: remove dead code
R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6944066
2012-12-21 16:02:39 +11:00
Dave Cheney
c850d0f34a net/http: simplify serve() connection close
Followup to 6971049.

R=bradfitz
CC=golang-dev
https://golang.org/cl/6970049
2012-12-21 15:14:38 +11:00
David Symonds
bb57670470 cmd/vet: expand printf flags understood by %s and %q.
Fixes #4580.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7002043
2012-12-21 13:48:36 +11:00
Rémy Oudompheng
1dcf658f6d cmd/gc: remove an incorrect assertion in escape analysis.
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
2012-12-20 23:27:28 +01:00
Andrew Gerrand
ff27cdb625 go/doc: don't synthesize code for examples that are not self-contained
Fixes #4309.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6974045
2012-12-21 07:06:38 +11:00
Andrew Gerrand
2874cc4eed cmd/godoc: redirect for file with trailing /
Fixes #4543.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6971050
2012-12-21 07:03:00 +11:00
Russ Cox
a3677b5f22 math: handle exponent separately in Log2
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
2012-12-20 12:23:27 -05:00
Joel Sing
708db79011 cgo: enable cgo on openbsd
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
2012-12-21 01:43:19 +11:00
Joel Sing
e6ca125f14 cmd/[568]l: do not generate PT_TLS on openbsd
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
2012-12-21 01:27:50 +11:00
Joakim Sernbrant
d0283ab62a net/http: only call client SetCookie when needed
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6968049
2012-12-19 16:24:38 -08:00
Andrew Gerrand
ff5d47ebba testing: only capture stdout when running examples
Fixes #4550.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6973048
2012-12-20 10:48:33 +11:00