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21929 Commits

Author SHA1 Message Date
Austin Clements
545686857b runtime: fix GDB "info goroutines" for Go 1.5
"info goroutines" is failing because it hasn't kept up with changes in
the 1.5 runtime.  This fixes three issues preventing "info goroutines"
from working.  allg is no longer a linked list, so switch to using the
allgs slice.  The g struct's 'status' field is now called
'atomicstatus', so rename uses of 'status'.  Finally, this was trying
to parse str(pc) as an int, but str(pc) can return symbolic
information after the raw hex value; fix this by stripping everything
after the first space.

This also adds a test for "info goroutines" to runtime-gdb_test, which
was previously quite skeletal.

Change-Id: I8ad83ee8640891cdd88ecd28dad31ed9b5833b7a
Reviewed-on: https://go-review.googlesource.com/4935
Reviewed-by: Minux Ma <minux@golang.org>
2015-02-17 18:41:01 +00:00
Ivan Ukhov
277eddb8f2 math: change Nextafter64 to Nextafter in the description of Nextafter
Change-Id: I3419d6247fbff36aa1ed5451bb3cfb7502c3d07e
Reviewed-on: https://go-review.googlesource.com/5030
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-02-17 14:29:18 +00:00
David Crawshaw
04774336b1 cmd/go: skip stat check when using -toolexec
Change-Id: Idc88b1ee950e33cfe757a27e9a3383d879793af7
Reviewed-on: https://go-review.googlesource.com/4934
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-02-17 12:21:45 +00:00
Alex Brainman
f20826692b syscall: make mksyscall_windows.go to work even when output does not uses unsafe package
Fixes #9900

Change-Id: I5dd401e8d2040e84ccb97c2fe9f5c5a28095b538
Reviewed-on: https://go-review.googlesource.com/5005
Reviewed-by: Minux Ma <minux@golang.org>
2015-02-17 08:31:38 +00:00
Yasuhiro Matsumoto
d866cd6817 all: fix typo in doc
Change-Id: I89fdda2914030dfea3183a8b4681dd4b33489729
Reviewed-on: https://go-review.googlesource.com/4996
Reviewed-by: Minux Ma <minux@golang.org>
2015-02-17 04:37:18 +00:00
Nigel Tao
5c8f9e38eb image: fix Rectangle.Overlaps and Rectangle.Union for empty rectangles.
Fixes #9895.

Change-Id: I37d78ced9ff8196e32d299504908a1c41ad4592d
Reviewed-on: https://go-review.googlesource.com/4990
Reviewed-by: Rob Pike <r@golang.org>
2015-02-17 03:40:33 +00:00
mattn
38be309dcf os: fix typo in doc
Change-Id: I9797b44dfa7c2c853b7a656f4f722df2c862824b
Reviewed-on: https://go-review.googlesource.com/4991
Reviewed-by: Andrew Gerrand <adg@golang.org>
2015-02-17 00:21:02 +00:00
Nigel Tao
37a61746ee image/draw: add CMYK test.
This just adds test cases. Optimizing CMYK draws will be a follow-up
change.

Change-Id: Ic0d6343d420cd021e21f88623ad7182e93017da9
Reviewed-on: https://go-review.googlesource.com/4941
Reviewed-by: Rob Pike <r@golang.org>
2015-02-17 00:08:47 +00:00
Aaron Jacobs
490af4fd83 unicode: Fixed an out of date comment (MaxLatin1, not Latin1Max).
Change-Id: I3ca878e9685f650a9ff02aaac0e2e3cca89634c6
Reviewed-on: https://go-review.googlesource.com/4970
Reviewed-by: Minux Ma <minux@golang.org>
2015-02-16 21:35:33 +00:00
Michael MacInnis
a25e40df47 doc: Add reminder to go1.5.txt for os/signal changes
Document addition of Ignore and Reset: https://golang.org/cl/3580

Change-Id: I33aac149cd1921b87f887028c0365ba0ab9adb02
Reviewed-on: https://go-review.googlesource.com/4980
Reviewed-by: Minux Ma <minux@golang.org>
2015-02-16 21:35:17 +00:00
Mikio Hara
18f273ff92 cmd/dist: don't use "uname -v" to recognize GOHOSTARCH
We can use processor architecture or hardware platform as part of
hostname and it leads to misconfiguration of GOHOSARCH.

For example,

$ uname -m -v
FreeBSD 10.1-RELEASE-p5 #0: Tue Jan 27 08:52:50 UTC 2015 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC i386

Change-Id: I499efd98338beff6a27c03f03273331ecb6fd698
Reviewed-on: https://go-review.googlesource.com/4944
Reviewed-by: Minux Ma <minux@golang.org>
2015-02-16 18:58:34 +00:00
Michael MacInnis
194ad16b83 os/signal: add ability to ignore signals and restore initial signal handlers
There is currently no way to ignore signals using the os/signal package.
It is possible to catch a signal and do nothing but this is not the same
as ignoring it. The new function Ignore allows a set of signals to be
ignored. The new function Reset allows the initial handlers for a set of
signals to be restored.

Fixes #5572

Change-Id: I5c0f07956971e3a9ff9b9d9631e6e3a08c20df15
Reviewed-on: https://go-review.googlesource.com/3580
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-02-16 14:23:09 +00:00
Nigel Tao
10a4696fb8 image/jpeg: remove the (temporary) dependency on image/draw.
Change-Id: Idd66f9c3c9eaa4ff1f950fb90e4800dc625dec08
Reviewed-on: https://go-review.googlesource.com/4916
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
2015-02-16 04:37:15 +00:00
Matthew Dempsky
7b36227002 runtime: remove C-style strcmp and strncmp helpers
Change-Id: I4aa23e3a0e765651c91907507a0194fd528b6223
Reviewed-on: https://go-review.googlesource.com/4662
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-02-16 04:07:19 +00:00
Nigel Tao
f10e03770c image/jpeg: support decoding CMYK and YCbCrK images.
The new testdata was created by:

convert video-001.png -colorspace cmyk video-001.cmyk.jpeg

video-001.cmyk.jpeg was then converted back to video-001.cmyk.png via
the GIMP. ImageMagick (convert) wasn't used for this second conversion
because IM's default color profiles complicates things.

Fixes #4500.

Change-Id: Ibf533f6a6c7e76883acc493ce3a4289d7875df3f
Reviewed-on: https://go-review.googlesource.com/4801
Reviewed-by: Rob Pike <r@golang.org>
2015-02-16 00:25:47 +00:00
Nigel Tao
b5c3a9e572 image: add image.CMYK and color.CMYK types.
Change-Id: Icf212a4b890725c803b16e76e1a88294b8b62cb8
Reviewed-on: https://go-review.googlesource.com/4800
Reviewed-by: Rob Pike <r@golang.org>
2015-02-16 00:08:49 +00:00
Robert Griesemer
61c9c3ddc4 math/big: implement fast path in Float.SetRat if argument is integer
Change-Id: Ib82500e198b86e9fade278c7eea7a4b0c6b0b2e1
Reviewed-on: https://go-review.googlesource.com/4921
Reviewed-by: Rob Pike <r@golang.org>
2015-02-15 20:11:00 +00:00
Dmitry Vyukov
52dadc1f31 cmd/gc: fix noscan maps
Change 85e7bee introduced a bug:
it marks map buckets as noscan when key and val do not contain pointers.
However, buckets with large/outline key or val do contain pointers.

This change takes key/val size into consideration when
marking buckets as noscan.

Change-Id: I7172a0df482657be39faa59e2579dd9f209cb54d
Reviewed-on: https://go-review.googlesource.com/4901
Reviewed-by: Keith Randall <khr@golang.org>
2015-02-15 08:52:14 +00:00
Robert Griesemer
2dd7a6d41f math/big: always round after the sign is set
Some rounding modes are affected by the sign of the value to
be rounded. Make sure the sign is set before round is called.
Added tests (that failed before the fix).

Change-Id: Idd09b8fcbab89894fede0b9bc922cda5ddc87930
Reviewed-on: https://go-review.googlesource.com/4876
Reviewed-by: Rob Pike <r@golang.org>
2015-02-15 05:14:05 +00:00
Shenghou Ma
7aa68756c5 doc/asm: document that assembly function must use short name
e.g. ·Name instead of package·Name for automatic stack map to
be applied from its Go prototype.

The underlying reason is that liblink look up name with suffix
".args_stackmap" for the stackmap coming from its Go prototype,
but all the Go functions are named "".Name as this stage. Thus
an assembly function named package·Name will never find its
stackmap, which is named "".package.Name.args_stackmap.

Perhaps cmd/vet should give a warning for this.

Change-Id: I10d154a73ec969d574d20af877f747424350fbd1
Reviewed-on: https://go-review.googlesource.com/2588
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-02-15 00:07:11 +00:00
Shenghou Ma
788f78ad08 cmd/go: remove script and script.txt
Fixes #9824.

Change-Id: Id318c61b6884e4fd294f7b0946dcc306f746ee0a
Reviewed-on: https://go-review.googlesource.com/4891
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-02-14 20:07:08 +00:00
Ian Lance Taylor
5aa448ff8c test: add test case for issue 4365
This is an update of http://golang.org/cl/151410043 by Tim Shen.

Change-Id: I43ab7fcedd785059c535f45a3c8cdb7b618c1499
Reviewed-on: https://go-review.googlesource.com/4873
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-02-14 16:02:10 +00:00
Robert Griesemer
b7bfb54eaa math/big: fix aliasing bug in Float.Quo
TBR r, adonovan

Change-Id: I1a38e2d724bf1147c7307a7e5ae855c42c60428c
Reviewed-on: https://go-review.googlesource.com/4875
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-02-14 04:22:56 +00:00
Robert Griesemer
a809dc7adb math/big: don't scan past a binary exponent if not accepted syntactically
TBR adonovan

Change-Id: I842cbc855dbd560f65e76c9a557dff1a22c5d610
Reviewed-on: https://go-review.googlesource.com/4882
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-02-14 01:01:19 +00:00
Robert Griesemer
ccdbfe3174 math/big: only permit bases 2, 10, 16 when scanning number w/ "decimal" point
TBR adonovan

Change-Id: I4fd694101c2cf1c0c39bf73d16cab18502742dd9
Reviewed-on: https://go-review.googlesource.com/4881
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-02-14 01:00:30 +00:00
Robert Griesemer
2e3c738649 math/big: remove Float.Round (not needed anymore), fix a bug in SetInt64
TBR adonovan

Change-Id: I30020f39be9183b37275e10a4fd1e1a3b4c48c89
Reviewed-on: https://go-review.googlesource.com/4880
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-02-14 00:43:07 +00:00
Robert Griesemer
df218d3393 math/big: implement/rename accessors for precision and rounding mode
Also: remove NewFloat - not needed anymore. Work-around for places
where has been used so far:

NewFloat(x, prec, mode) === new(Float).SetMode(mode).SetPrec(prec).SetFloat64(x)

However, if mode == ToNearestEven, SetMode is not needed. SetPrec
is needed if the default precision (53 after SetFloat64) is not
adequate.

TBR adonovan

Change-Id: Ifda12c479ba157f2dea306c32b47c7afbf31e759
Reviewed-on: https://go-review.googlesource.com/4842
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-02-14 00:42:40 +00:00
Robert Griesemer
31e852402f math/big: fix aliasing error in Add, Sub
Also:
- make representation more flexible (no need to store trailing 0 digits to match precision)
- simplify rounding as a consequence
- minor related fixes

TBR adonovan

Change-Id: Ie91075990688b506d28371ec3b633b8267397ebb
Reviewed-on: https://go-review.googlesource.com/4841
Reviewed-by: Rob Pike <r@golang.org>
2015-02-14 00:42:05 +00:00
Robert Griesemer
7a77d8d1e9 math/big: use internal validation more consistently
TBR adonovan

Change-Id: If77afa6474af6cad6512f6866725e3ae5acf2e3f
Reviewed-on: https://go-review.googlesource.com/4840
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-02-14 00:41:20 +00:00
Brad Fitzpatrick
b5b11bdbc6 test: deflake init1.go test, tighten its bounds
Per the comment at top, this test is about whether the GC runs during
init, but it was testing more than that, and testing how much the GC
collected in a certain amount of time.

Instead, loosen this test to just see whether it ran at all and not
how well it did.

Fixes #9848

Change-Id: I31da7dd769140d7b49aa6c149a543fae6076aa5e
Reviewed-on: https://go-review.googlesource.com/4820
Reviewed-by: Rick Hudson <rlh@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-13 22:13:56 +00:00
David du Colombier
ad73dc349b cmd/gc: replace NULL by nil
In CL 4050, NULL was used instead of nil.
However, Plan 9 doesn't declare NULL.

Change-Id: I8295a3102509a1ce417278f23a37cbf65938cce1
Reviewed-on: https://go-review.googlesource.com/4814
Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-13 22:13:42 +00:00
David Crawshaw
ae3229ae5c cmd/ld: always mark tlsg STLSBSS
Android apps build again.

Defining TLSG in runtime/tls_arm.s gives it the type SNOPTRBSS, so its
type was never being set when GOOS=android. I considered modifying the
if statement, but I no longer understand the intention of the original
change (in d738c6b0ca). We were always setting it before, what
platform is this not valid for?

Fixes #9829

Change-Id: I3eaa4a9590893eff67695797eb22547a170cdbcd
Reviewed-on: https://go-review.googlesource.com/4834
Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: David Crawshaw <crawshaw@golang.org>
2015-02-13 21:27:21 +00:00
Hyang-Ah (Hana) Kim
69937d2131 androidtest.bash: remove use of cp --preserve.
--preserve flag is not a valid flag for some versions of cp.

Change-Id: I57f5bf21cbe726057fdadcd55b040ef7ff5d7479
Reviewed-on: https://go-review.googlesource.com/4835
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-02-13 21:16:25 +00:00
Shenghou Ma
855145d5c0 cmd/ld: set alignment for the .rel.plt section on 32-bit architectures
Fixes #9802.

Change-Id: I22c52a37bdb23a14cc4615c9519431bb14ca81ca
Reviewed-on: https://go-review.googlesource.com/4170
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-02-13 20:09:34 +00:00
Russ Cox
5f1efe738b cmd/ld: make cmd/ld a real library
Make cmd/ld a real library invoked by the individual linkers.
There are no reverse symbol references anymore
(symbols referred to in cmd/ld but defined in cmd/5l etc).

This means that in principle we could do an automatic
conversion of these to Go, as a stopgap until cmd/link is done
or as a replacement for cmd/link.

Change-Id: I4a94570257a3a7acc31601bfe0fad9dea0aea054
Reviewed-on: https://go-review.googlesource.com/4649
Reviewed-by: Rob Pike <r@golang.org>
2015-02-13 17:31:38 +00:00
Russ Cox
892286419e cmd/dist: avoid trailing space in instruction name strings
Change-Id: I2db4db852492eaddaf09dd7bae2fbd49f916e78a
Reviewed-on: https://go-review.googlesource.com/4648
Reviewed-by: Rob Pike <r@golang.org>
2015-02-13 17:31:29 +00:00
Russ Cox
5c87cf7608 cmd/gc: minor adjustments for C to Go translation
- remove a few uses of ? :
- rename variables named len
- rewrite a few gotos as nested switches
- move goto targets to scope allowed by Go
- use consistent return type of anyregalloc
  (was int or int32 in different places)
- remove unused nr variable in agen
- include proper headers in generated builtin1.c
- avoid strange sized %E formats (%-6E, %2E)
- change gengcmask argument from uint8[16] to uint8*
  (diagnosed by c2go; not an array in any real sense).
- replace #ifdef XXX with comment block in 5g/peep.c
- expand and remove FAIL macro from 5g
- expand and remove noimpl macro from 9g
- print regalloc errors to stdout in 8g
  (only use of fprint(2, ...) in all compilers)

Still producing bit-for-bit identical output.

Change-Id: Id46efcd2a89241082b234f63f375b66f2754d695
Reviewed-on: https://go-review.googlesource.com/4646
Reviewed-by: Austin Clements <austin@google.com>
2015-02-13 17:31:16 +00:00
Russ Cox
acba34e45f cmd/gc: eliminate some pointer arithmetic
In mparith, all the a1-- are problematic. Rewrite it all without pointers.
It's clearer anyway.

In popt, v is problematic because it is used both as a fixed pointer
(v = byvar[i]) and as a moving pointer (v = var; v++) aka slice.
Eliminate pointer movement.

Tested that this still produces bit-for-bit output for 'go build -a std'
compared to d260756 (current master).

Change-Id: I1a1bed0f98b594c3864fe95075dd95f9b52113e0
Reviewed-on: https://go-review.googlesource.com/4645
Reviewed-by: Austin Clements <austin@google.com>
2015-02-13 17:31:04 +00:00
Russ Cox
ff81c14fb2 cmd/gc: rename arch to thearch
Otherwise the exported variable collides with the type Arch.

While we're here, remove arch.dumpit (now in portable code)
and add arch.defframe (forgotten originally, somehow).

Change-Id: I1b3a7dd7e96c5f632dba7cd6c1217b42a2004d72
Reviewed-on: https://go-review.googlesource.com/4644
Reviewed-by: Austin Clements <austin@google.com>
2015-02-13 17:30:55 +00:00
Russ Cox
4b27c9d72e cmd/gc: add .y to error about missing x in x.y
If the Go source says x.y, and x is undefined, today we get

	undefined: x

Change to:

	undefined: x in x.y

Change-Id: I8ea95503bd469ea933c6bcbd675b7122a5d454f3
Reviewed-on: https://go-review.googlesource.com/4643
Reviewed-by: Austin Clements <austin@google.com>
2015-02-13 17:30:37 +00:00
Russ Cox
fa7efa2cb0 cmd/gc: add debugging to liveness analysis
Even with debugmerge = 1, the debugging output only happens
with the -v command-line flag. This is useful because it gets added
in automatically when debugging things like registerization with -R -v.

Change-Id: I9a5c7f562507b72e8e2fe2686fd07d069721345a
Reviewed-on: https://go-review.googlesource.com/4641
Reviewed-by: Austin Clements <austin@google.com>
2015-02-13 17:30:24 +00:00
Russ Cox
bed481d683 cmd/gc: correct errors in constant parsing
Change-Id: I36f77e7ac7f727d8f3b51133f4b3ef93c35b09f6
Reviewed-on: https://go-review.googlesource.com/4640
Reviewed-by: Austin Clements <austin@google.com>
2015-02-13 17:30:14 +00:00
Russ Cox
be4ecd9815 cmd/gc: avoid writing past end of region array
Noticed last week.
Just saw a strange build failure in the revised rcmp (called by qsort on region)
and this fixed it.

Submitting first to avoid finding out which of my pending CLs tickled the
problem.

Change-Id: I4cafd611e2bf8e813e57ad0025e48bde5ae54359
Reviewed-on: https://go-review.googlesource.com/4830
Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-13 17:30:05 +00:00
Russ Cox
2e78447baf cmd/yacc: adjust expansion of $n to be more useful in errors
When the compiler echoes back an expression, it shows the
generated yacc expression. Change the generated code to
use a slice so that $3 shows up as yyDollar[3] in such messages.

Consider changing testdata/expr/expr.y to say:

	$$.Sub(float64($1), $3)

(The float64 conversion is incorrect.)

Before:
expr.y:70[expr.go:486]: cannot convert exprS[exprpt - 2].num (type *big.Rat) to type float64

After:
expr.y:70[expr.go:492]: cannot convert exprDollar[1].num (type *big.Rat) to type float64

Change-Id: I74e494069df588e62299d1fccb282f3658d8f8f4
Reviewed-on: https://go-review.googlesource.com/4630
Reviewed-by: Rob Pike <r@golang.org>
2015-02-13 17:29:36 +00:00
Roger Peppe
3be158d6ab encoding/xml: encoding name spaces correctly
The current XML printer does not understand the xmlns
attribute. This change changes it so that it interprets the
xmlns attributes in the tokens being printed, and uses
appropriate prefixes.

Fixes #7535.

Change-Id: I20fae291d20602d37deb41ed42fab4c9a50ec85d
Reviewed-on: https://go-review.googlesource.com/2660
Reviewed-by: Nigel Tao <nigeltao@golang.org>
2015-02-13 17:28:45 +00:00
Dmitry Vyukov
f59f9b8527 runtime: fix stack corruption in race mode
MOVQ RARG0, 0(SP) smashes exactly what was saved by PUSHQ R15.
This code managed to work somehow with the current race runtime,
but corrupts caller arguments with new race runtime that I am testing.

Change-Id: I9ffe8b5eee86451db36e99dbf4d11f320192e576
Reviewed-on: https://go-review.googlesource.com/4810
Reviewed-by: Keith Randall <khr@golang.org>
2015-02-13 16:29:54 +00:00
Dmitry Vyukov
6731063e42 runtime/race: fix test in preparation for new race runtime
New race runtime is more scrupulous about env flags format.

Change-Id: I2828bc737a8be3feae5288ccf034c52883f224d8
Reviewed-on: https://go-review.googlesource.com/4811
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-02-13 15:55:09 +00:00
Austin Clements
6e5cc1f1ac runtime: rename drainworkbuf and drainobjects
drainworkbuf is now gcDrain, since it drains until there's
nothing left to drain.  drainobjects is now gcDrainN because it's
the bounded equivalent to gcDrain.

The new names use the Go camel case convention because we have to
start somewhere.  The "gc" prefix is because we don't have runtime
packages yet and just "drain" is too ambiguous.

Change-Id: I88dbdf32e8ce4ce6c3b7e1f234664be9b76cb8fd
Reviewed-on: https://go-review.googlesource.com/4785
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>
2015-02-13 15:34:55 +00:00
Austin Clements
60a16ea367 runtime: remove drainallwbufs argument to drainworkbuf
All calls to drainworkbuf now pass true for this argument, so remove
the argument and update the documentation to reflect the simplified
interface.

At a higher level, there are no longer any situations where we drain
"one wbuf" (though drainworkbuf didn't guarantee this anyway).  We
either drain everything, or we drain a specific number of objects.

Change-Id: Ib7ee0fde56577eff64232ee1e711ec57c4361335
Reviewed-on: https://go-review.googlesource.com/4784
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>
2015-02-13 15:34:49 +00:00
Austin Clements
15c9a2ef4e runtime: eliminate drainworkbufs from scanblock
scanblock is only called during _GCscan and _GCmarktermination.
During _GCscan, scanblock didn't call drainworkbufs anyway.  During
_GCmarktermination, there's really no point in draining some (largely
arbitrary) amount of work during the scanblock, since the GC is about
to drain everything anyway, so simply eliminate this case.

Change-Id: I7f3c59ce9186a83037c6f9e9b143181acd04c597
Reviewed-on: https://go-review.googlesource.com/4783
Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-13 15:34:39 +00:00