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1619 Commits

Author SHA1 Message Date
fanzha02
c379c3d58d cmd/compile: set conversions to unsafe.Pointer as an escaping operation when -asan is enabled
When ASan is enabled, treat conversions to unsafe.Pointer as
an escaping operation. In this way, all pointer operations on
the stack objects will become operations on the escaped heap
objects. As we've already supported ASan detection of error
memory accesses to heap objects. With this trick, we can use
-asan option to report errors on bad stack operations.

Add test cases.

Updates #44853.

Change-Id: I6281e77f6ba581d7008d610f0b24316078b6e746
Reviewed-on: https://go-review.googlesource.com/c/go/+/393315
Trust: Fannie Zhang <Fannie.Zhang@arm.com>
Run-TryBot: Fannie Zhang <Fannie.Zhang@arm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Eric Fang <eric.fang@arm.com>
2022-03-17 08:43:51 +00:00
Fannie Zhang
599d5395eb Revert "cmd/compile: set conversions to unsafe.Pointer as an escaping operation when -asan is enabled"
This reverts commit 5fd0ed7aaf.

Reason for revert: <The internal information in commit message is not removed.>

Change-Id: Id6845a9c8114ac71c56a1007a4d133a560a37fbc
Reviewed-on: https://go-review.googlesource.com/c/go/+/393314
Trust: Fannie Zhang <Fannie.Zhang@arm.com>
Reviewed-by: Eric Fang <eric.fang@arm.com>
2022-03-17 08:43:15 +00:00
Cherry Mui
91631bc7e0 cmd/link: mark unexported methods for plugins
When plugin is used, we already mark all exported methods
reachable. However, when the plugin and the host program share
a common package, an unexported method could also be reachable
from both the plugin and the host via interfaces. We need to mark
them as well.

Fixes #51621.

Change-Id: I1a70d3f96b66b803f2d0ab14d00ed0df276ea500
Reviewed-on: https://go-review.googlesource.com/c/go/+/393365
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2022-03-16 20:10:07 +00:00
fanzha02
5fd0ed7aaf cmd/compile: set conversions to unsafe.Pointer as an escaping operation when -asan is enabled
When ASan is enabled, treat conversions to unsafe.Pointer as
an escaping operation. In this way, all pointer operations on
the stack objects will become operations on the escaped heap
objects. As we've already supported ASan detection of error
memory accesses to heap objects. With this trick, we can use
-asan option to report errors on bad stack operations.

Add test cases.

Updates #44853.

CustomizedGitHooks: yes
Change-Id: I4e7fe46a3ce01f0d219e6a67dc50f4aff7d2ad87
Reviewed-on: https://go-review.googlesource.com/c/go/+/325629
Trust: Fannie Zhang <Fannie.Zhang@arm.com>
Reviewed-by: Keith Randall <khr@golang.org>
2022-03-16 07:03:20 +00:00
cuishuang
9fe3676bc7 all: fix typos
Change-Id: I93ff3d33a5db130dd57a9545456f2961fc3f668b
GitHub-Last-Rev: f95fafc049
GitHub-Pull-Request: golang/go#51394
Reviewed-on: https://go-review.googlesource.com/c/go/+/388314
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2022-02-28 21:52:59 +00:00
Daniel Martí
ef06a5f44a misc/reboot: don't use symlinks when copying GOROOT/src
go:embed disallows using symlinked files by design.
crypto/elliptic is the first std package to use it as of CL 380475,
and unfortunately that broke the TestRepeatBootstrap long test.

The reason it uses symlinks is for speed; it wants to copy GOROOT/src,
but regular files aren't going to be modified in any way,
so a symlink, if supported, means not needing to copy the contents.

Replace the symlink attempt with hard links,
which will mean regular files remain as such, fixing go:embed.
It's worth noting that on many systems hard links won't work,
as the temporary filesystem tends to be separate,
but it doesn't hurt to try.

In my system, where /tmp is tmpfs, the test now copies more bytes.
With the added Logf, I can see overlayDir goes from ~30ms to ~100ms.
This makes sense, as GOROOT/src currently weighs around 100MiB.
To alleviate that slow-down, stop copying testdata directories,
as they currently weigh around 20MiB and aren't needed for the test.
This gets overlayDir on my system down to an acceptable ~70ms.

I briefly considered teaching overlayDir what files can be symlinks,
but that seemed fairly complex long-term, as any file could be embedded.

While here, start using testing.T.TempDir and fs.WalkDir.

For #50995.

Change-Id: I17947e6bdee96237e1ca0606ad0b95e7c5987bc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/383995
Trust: Daniel Martí <mvdan@mvdan.cc>
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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2022-02-08 15:30:12 +00:00
Bryan C. Mills
3c4c10ea8c misc/cgo: fix aliasing bugs in parallel tests that append to shared slices
These tests use a slice to represent the base C compiler command (with
flags). Appending to that slice can cause subtle aliasing bugs, such
as commands that silently corrupt the arguments of other concurrent
commands in parallel tests.

In this change, we explicitly reduce the capacity of the command slice
to force appends to it to always allocate unique new slices.

Fixes #49693

Change-Id: Ide466bf65f12cb6cead3dcba69f513cccb60a160
Reviewed-on: https://go-review.googlesource.com/c/go/+/383754
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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2022-02-07 17:51:57 +00:00
Ian Lance Taylor
248ad855b7 misc/cgo/test: disable unhelpful GCC warning
GCC 9 warns about a change in the ABI of passing structs with bitfields,
but we don't care.

Fixes #50987

Change-Id: Ica658d04172a42a7be788f94d31a714bb8c4766f
Reviewed-on: https://go-review.googlesource.com/c/go/+/382956
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Trust: Benny Siegert <bsiegert@gmail.com>
2022-02-03 22:55:24 +00:00
fanzha02
2c58bb2e42 src/runtime: mark asanread and asanwrite functions as NOSPLIT
The asan runtime functions may run on stacks that cannot grow, and
they do not have large local variables, so it is safe to mark them
as NOSPLIT.

Add test case.

Fixes #50391

Change-Id: Iadcbf1ae0c837d9b64da5be208c7f424e6ba11de
Reviewed-on: https://go-review.googlesource.com/c/go/+/374398
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Trust: Fannie Zhang <Fannie.Zhang@arm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2022-01-05 09:50:29 +00:00
Ian Lance Taylor
6178d25fc0 misc/cgo/testsanitizers: accept compilers that don't report location
It appears that GCC before version 10 doesn't report file/line
location for asan errors.

Change-Id: I03ee24180ba365636596aa2384961df7ce6ed71f
Reviewed-on: https://go-review.googlesource.com/c/go/+/374874
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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2021-12-29 20:20:32 +00:00
Ian Lance Taylor
8a306e2056 misc/cgo/testsanitizers: don't fail asan test if no symbolizer
Change-Id: Ic05c641bda3cc8f5292921c9b0c0d3df34f3bc48
Reviewed-on: https://go-review.googlesource.com/c/go/+/374794
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-12-29 19:23:11 +00:00
fanzha02
91e782106e runtime: fix the issue that the -asan option cannot print where the error occurred
The current -asan option does not print where the error occurred. The
reason is that the current implementation calls incorrect asan runtime
functions, which do not pass sp and pc where asan runtime functions are
called, and report the stack trace from the native code. But asan runtime
functions are called from cgo on a separated stack, so it cannot dump the
Go stack trace correctly.

The correct asan runtime function we should call is __asan_report_error,
which will pass sp and pc, and report where the error occurred correctly.

This patch fixes this issue.

Add the test cases.

Fixes #50362

Change-Id: I12ee1d46c7ae069ddef3d23f2fe86e112db60045
Reviewed-on: https://go-review.googlesource.com/c/go/+/374395
Trust: Fannie Zhang <Fannie.Zhang@arm.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-29 04:10:07 +00:00
Ian Lance Taylor
cfb0cc3552 cmd/link: use SHT_INIT_ARRAY for .init_array section
Fixes #50295

Change-Id: If55ebcd5f2af724da7c9c744458a56d21a7ddde7
Reviewed-on: https://go-review.googlesource.com/c/go/+/373734
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-12-21 18:34:03 +00:00
Cherry Mui
c5fee935bb cmd/link: force eager binding when using plugins on darwin
When building/using plugins on darwin, we need to use flat
namespace so the same symbol from the main executable and the
plugin can be resolved to the same address. Apparently, when using
flat namespace the dynamic linker can hang at forkExec when
resolving a lazy binding. Work around it by forcing early bindings.

Fixes #38824.

Change-Id: I983aa0a0960b15bf3f7871382e8231ee244655f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/372798
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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2021-12-17 16:05:31 +00:00
Bryan C. Mills
d01cd8fa1d misc/cgo/testcarchive: log command output more consistently
Also check that executables exist immediately after building them
in parallel tests.

The parallel tests in this package occasionally fail with
"no such file or directory", implying that either the build
command failed to actually write out the binary or something
concurrently deleted it.

This is purely a shot in the dark, but I'm hoping that perhaps
the stderr output from one of these commands will shed some
light on the underlying failure mode.

For #49693

Change-Id: I2e768190c56053550879b89a3ac88c027d4741dd
Reviewed-on: https://go-review.googlesource.com/c/go/+/369034
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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2021-12-16 22:15:57 +00:00
Jakub Čajka
83fc0978e5 misc/cgo/testshared: increase size limit in size check
Recently in Fedora we switched binutils ld's separate-code on. This
led to increased size of binaries, especially on 64k aligned arches.
For example trivial test binary size grew from 80k to 211k on ppc64le
tripping the size check(RHBZ#2030308). Therefore adjusting the size limit.

Change-Id: Ic722d90c338739c0b285f40b12ba4d675e9626a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/371634
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-12-15 20:19:05 +00:00
Jakub Čajka
d5fefbb498 misc/cgo/testshared: pass -x flag only to commands supporting it
Running testshared with the -testx flag leads to:

./testshared.test -testx -testwork
+ mkdir -p /tmp/shared_test125221103
shared_test.go:79: executing go env -x GOROOT failed exit status 2:
flag provided but not defined: -x
usage: go env [-json] [-u] [-w] [var ...]
Run 'go help env' for details.
panic: executing go env -x GOROOT failed exit status 2:
flag provided but not defined: -x
usage: go env [-json] [-u] [-w] [var ...]
Run 'go help env' for details.

Change-Id: Id299979487c021e9ad1d57f5f7088d935830a6a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/371614
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Cherry Mui <cherryyz@google.com>
2021-12-15 20:18:30 +00:00
Michael Anthony Knyszek
4c943abb95 runtime: fix comments on the behavior of SetGCPercent
Fixes for #49680, #49695, #45867, and #49370 all assumed that
SetGCPercent(-1) doesn't block until the GC's mark phase is done, but
it actually does. The cause of 3 of those 4 failures comes from the fact
that at the beginning of the sweep phase, the GC does try to preempt
every P once, and this may run concurrently with test code. In the
fourth case, the issue was likely that only *one* of the debug_test.go
tests was missing a call to SetGCPercent(-1). Just to be safe, leave a
TODO there for now to remove the extraneous runtime.GC calls, but leave
the calls in.

Updates #49680, #49695, #45867, and #49370.

Change-Id: Ibf4e64addfba18312526968bcf40f1f5d54eb3f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/369815
Reviewed-by: Austin Clements <austin@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
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2021-12-07 17:46:04 +00:00
Dmitri Shuralyov
79b425e9fc misc/cgo/testplugin: remove skip in TestIssue25756pie
Though this was a problem for Go 1.17,
it appears not to be a problem on tip.

This reverts change made in CL 321349.

For #46239.

Change-Id: Ie4d6649fbabce3bb2c1cf04d97760ba6ceadaca5
Reviewed-on: https://go-review.googlesource.com/c/go/+/369752
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
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2021-12-07 00:03:34 +00:00
Changkun Ou
36be0beb05 misc/ios: bump min version
For #48076

Change-Id: I5edaa43af82c3478555c309a001a3d1b16de3d64
Reviewed-on: https://go-review.googlesource.com/c/go/+/368615
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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2021-12-02 16:48:07 +00:00
Paul E. Murphy
7ccbcc9056 misc/cgo/test: further reduce likeliness of hang in Test9400
As suggested by #49680, a GC could be in-progress when we
disable GC. Force a GC after we pause to ensure we don't
hang in this case.

For #49695

Change-Id: I4fc4c06ef2ac174217c3dcf7d58c7669226e2d24
Reviewed-on: https://go-review.googlesource.com/c/go/+/367874
Run-TryBot: Paul Murphy <murp@ibm.com>
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Trust: Paul Murphy <murp@ibm.com>
2021-11-30 20:04:58 +00:00
Paul E. Murphy
682435dd99 misc/cgo/test: reduce likeliness of hang in Test9400
If a GC triggers while spinning in RewindAndSetgid, it may result in
this test hanging. Avoid it by disabling the collector before entering
the uninterruptable ASM conditional wait.

Fixes #49695

Change-Id: Ie0a03653481fb746f862469361b7840f4bfa8b67
Reviewed-on: https://go-review.googlesource.com/c/go/+/365836
Run-TryBot: Paul Murphy <murp@ibm.com>
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Trust: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-11-30 15:28:46 +00:00
Bryan C. Mills
b90c6b99b3 misc/reboot: skip TestRepeatBootstrap on short builders
This test is slow and resource-intensive, and will rarely catch
failures. It is important to run sometimes, but probably a waste of
time on smaller (and especially reverse) builders.
Rather than hard-coding a list of small builders, only run it on the
longtest builders.

Fixes #35233
Fixes #30892
Fixes #49753

Change-Id: I25a9702e1f541246ea200fd7c79414ca5f69edae
Reviewed-on: https://go-review.googlesource.com/c/go/+/366538
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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2021-11-23 16:52:38 +00:00
Ian Lance Taylor
81031300a7 misc/cgo/testcshared: skip TestGo2C2Go on Windows
For #27019
Fixes #49457

Change-Id: I398abb7b555196ced34a6dd04b68195bf8bbdd38
Reviewed-on: https://go-review.googlesource.com/c/go/+/365994
Trust: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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Reviewed-by: Patrik Nyblom <pnyb@google.com>
2021-11-22 18:57:50 +00:00
Bryan C. Mills
9e94cc3666 misc/cgo/test: remove unnecessary forward declaration
This test otherwise fails to build on windows/arm64 as of CL 364774
due to a warning (promoted to an error) about a mismatched dllexport
attribute. Fortunately, it seems not to need the forward-declared
function in this file anyway.

Updates #49633
Updates #49721

Change-Id: Ia4698b85077d0718a55d2cc667a7950f1d8e50ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/366075
Trust: Bryan C. Mills <bcmills@google.com>
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2021-11-22 18:50:19 +00:00
Alan Donovan
d2f4c935f2 runtime/cgo: add example of Handle with void* parameter
Fixes #49633

Change-Id: I12ca350f7dd6bfc8753a4a169f29b89ef219b035
Reviewed-on: https://go-review.googlesource.com/c/go/+/364774
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
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2021-11-20 00:37:28 +00:00
Ian Lance Taylor
4b27d40b50 misc/cgo/testshared: correct test of gccgo version number
We still don't run the gccgo tests, because they don't run in module mode.
But now we at least get the version number check right.

Change-Id: Ifde4512c30605d1cb7e3a521f381a05c783549b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/362996
Trust: Ian Lance Taylor <iant@golang.org>
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2021-11-11 04:54:05 +00:00
Joel Sing
6458b2e8db all: add support for c-archive and c-shared on linux/riscv64
This provides the runtime glue (_rt0_riscv64_linux_lib) for c-archive and c-shared
support, along with enabling both of these buildmodes on linux/riscv64.

Both misc/cgo/testcarchive and misc/cgo/testcshared now pass on this platform.

Fixes #47100

Change-Id: I7ad75b23ae1d592dbac60d15bba557668287711f
Reviewed-on: https://go-review.googlesource.com/c/go/+/334872
Trust: Joel Sing <joel@sing.id.au>
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2021-11-03 09:23:34 +00:00
Ian Lance Taylor
a4b2c579e9 runtime: install sigPreempt signal handler for c-archive/c-shared
Fixes #49288

Change-Id: I7bfcbecbefa68871a3e556935a73f241fff44c0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/360861
Trust: Ian Lance Taylor <iant@golang.org>
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2021-11-03 00:49:50 +00:00
fanzha02
3ee426aefa cmd/dist: add asan tests in misc/cgo/testsanitizers package
Add asan tests to check the use of Go with -asan option.

Currenly, the address sanitizer in Go only checks for error
memory access to heap objects.

TODO: Enable check for error memory access to global objects.

Updates #44853.

Change-Id: I83579f229f117b5684a369fc8f365f4dea140648
Reviewed-on: https://go-review.googlesource.com/c/go/+/298615
Trust: fannie zhang <Fannie.Zhang@arm.com>
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2021-11-02 06:21:44 +00:00
Bryan C. Mills
a88575d662 Revert "cmd/go: remove support for -buildmode=shared"
This reverts CL 359096.

Updates #47788.

Reason for revert: -buildmode=shared may have actually been working in a few very specific cases. We should not remove -buildmode=shared until we have implemented an alternative to support those few cases.

Change-Id: Ia962b06abacc11f6f29fc29d092773be175e32f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/359575
Trust: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Russ Cox <rsc@golang.org>
2021-10-29 17:32:24 +00:00
Bryan C. Mills
68bd5121ee cmd/go: remove support for -buildmode=shared
It never worked in module mode (or with a read-only GOROOT).
A proposal to drop it was filed (and approved) in
https://golang.org/issue/47788.

Fixes #47788

Change-Id: I0c12f38eb0c5dfe9384fbdb49ed202301fa4273d
Reviewed-on: https://go-review.googlesource.com/c/go/+/359096
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2021-10-27 20:03:17 +00:00
Richard Musiol
252324e879 cmd/link: increase reserved space for passing env on wasm
On wasm, the wasm_exec.js helper passes the command line arguments and
environment variables via a reserved space in the wasm linear memory.
Increase this reserved space from 4096 to 8192 bytes so more environment
variables can fit into the limit.

Later, after https://golang.org/cl/350737 landed, we can switch to the
WASI interface for getting the arguments and environment. This would
remove the limit entirely.

Fixes #49011

Change-Id: I48a6e952a97d33404ed692c98e9b49c5cd6b269b
Reviewed-on: https://go-review.googlesource.com/c/go/+/358194
Trust: Richard Musiol <neelance@gmail.com>
Run-TryBot: Richard Musiol <neelance@gmail.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-10-25 20:08:25 +00:00
Richard Musiol
680caf1535 misc/wasm: expect environment to provide polyfills
The list of environments to support with wasm_exec.js was becoming too
large to maintain. With this change, wasm_exec.js expects that the
environment provides all necessary polyfills.

The standardized "globalThis" is used for accessing the environment.
wasm_exec.js now only provides stub fallbacks for globalThis.fs and
globalThis.process.

All code specific to Node.js is now in a separate file.

Change-Id: I076febbd94d4d7845260faad972f450f74a7b983
Reviewed-on: https://go-review.googlesource.com/c/go/+/347353
Trust: Richard Musiol <neelance@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-10-16 14:50:21 +00:00
zhouguangyuan
f687831e4c cmd/link: disable weak reference in itab if build with "-linkshared"
When build with "-linkshared", we can't tell if the interface method will be used or not. It can be used in shared library.

Fixes #47873

Change-Id: Iba12812f199b7679cf2fd41a304268d6d6dd03c6
Reviewed-on: https://go-review.googlesource.com/c/go/+/350189
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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Trust: Alexander Rakoczy <alex@golang.org>
2021-10-13 15:12:46 +00:00
Bryan C. Mills
b3a4b2df09 misc/cgo/testshared: pass the testing.T to goCmd when available
Noticed while investigating the test failure in
https://build.golang.org/log/4fc4aa11087c74bb8f66c81a8b212f41fb495be4.

Change-Id: I0ed80dad99d6920a187af4339e437a08fbe91ade
Reviewed-on: https://go-review.googlesource.com/c/go/+/354572
Trust: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-10-08 15:27:20 +00:00
Cherry Mui
77f2750f43 misc/wasm, cmd/link: do not let command line args overwrite global data
On Wasm, wasm_exec.js puts command line arguments at the beginning
of the linear memory (following the "zero page"). Currently there
is no limit for this, and a very long command line can overwrite
the program's data section. Prevent this by limiting the command
line to 4096 bytes, and in the linker ensuring the data section
starts at a high enough address (8192).

(Arguably our address assignment on Wasm is a bit confusing. This
is the minimum fix I can come up with.)

Thanks to Ben Lubar for reporting this issue.

Fixes #48797
Fixes CVE-2021-38297

Change-Id: I0f50fbb2a5b6d0d047e3c134a88988d9133e4ab3
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1205933
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/354571
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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2021-10-07 18:45:53 +00:00
Matthew Dempsky
019ad98b53 cmd/cgo: update to handle ast.IndexListExpr
Allows cgo to work with generics.

Updates #47781.

Change-Id: Id1a5d1a0a8193c5b157e3e671b1490d687d10384
Reviewed-on: https://go-review.googlesource.com/c/go/+/353882
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-10-07 18:02:14 +00:00
Russ Cox
4d8db00641 all: use bytes.Cut, strings.Cut
Many uses of Index/IndexByte/IndexRune/Split/SplitN
can be written more clearly using the new Cut functions.
Do that. Also rewrite to other functions if that's clearer.

For #46336.

Change-Id: I68d024716ace41a57a8bf74455c62279bde0f448
Reviewed-on: https://go-review.googlesource.com/c/go/+/351711
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-10-06 15:53:04 +00:00
Elias Naur
635e49388b cmd/cgo: add go:notinheap annotation to Windows handle types
Fixes #42018

Change-Id: I6a40f3effe860e67a45fca2e8ab86f3e9887ffee
Reviewed-on: https://go-review.googlesource.com/c/go/+/350070
Trust: Elias Naur <mail@eliasnaur.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
2021-09-22 18:10:24 +00:00
Ian Lance Taylor
265b59aefd cmd/cgo: for godefs, don't let field prefix removal cause duplicates
Fixes #48396

Change-Id: Idd7cb66536ef513806c472d394a929bc271fc26b
Reviewed-on: https://go-review.googlesource.com/c/go/+/350159
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
2021-09-16 23:56:28 +00:00
rhysd
04d8d24960 misc/wasm: enable ECMAScript strict mode
Current wasm_exec.js does not enable ECMAScript strict mode. But it is
recommended to be enabled because it

1. eliminates some ECMAScript silent errors by changing them to throw
   errors
2. fixes mistakes that make it difficult for JavaScript engines to
   perform optimizations
3. prohibits some syntax likely to be defined in future versions of
   ECMAScript

This commit enables ECMAScript strict mode in wasm_exec.js following the
transition guide:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode/Transitioning_to_strict_mode

Fixes #47116

Change-Id: Ib8ffceee37e9127698fb51304241f1e429efe83e
Reviewed-on: https://go-review.googlesource.com/c/go/+/334269
Reviewed-by: Richard Musiol <neelance@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Trust: Richard Musiol <neelance@gmail.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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2021-09-03 19:56:09 +00:00
Hans
df9c5d8f5d cmd/cgo: fix unused parameter warnings in generated _cgo_main.c
Applying -Werror compiler option to request warnings is an usual
way to discover potential errors. Go user may put a cgo directive
in preamble: `// #cgo CFLAGS: -Werror=unused-parameter`.

However, the directive also takes effect on the cgo generated files.
I cleaned _cgo_main.c to help Go user only concentrate on warnings
of their own file.

Fixes #43639

Change-Id: I9112f02ae5226f2fc87a8650d19faee59cddd588
GitHub-Last-Rev: f09d172f97
GitHub-Pull-Request: golang/go#46358
Reviewed-on: https://go-review.googlesource.com/c/go/+/322232
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Bryan C. Mills <bcmills@google.com>
2021-08-16 23:03:03 +00:00
Dmitri Shuralyov
98f3d7fecb all: gofmt more (but vendor, testdata, and top-level test directories)
CL 294430 made packages in std and cmd modules use Go 1.17 gofmt format,
adding //go:build lines. This change applies the same formatting to some
more packages that 'go fmt' missed (e.g., syscall/js, runtime/msan), and
everything else that is easy and safe to modify in bulk.

Consider the top-level test directory, testdata, and vendor directories
out of scope, since there are many files that don't follow strict gofmt
formatting, often for intentional and legitimate reasons (testing gofmt
itself, invalid Go programs that shouldn't crash the compiler, etc.).

That makes it easy and safe to gofmt -w the .go files that are found
with gofmt -l with aforementioned directories filtered out:

	$ gofmt -l . 2>/dev/null | \
		grep -v '^test/' | \
		grep -v '/testdata/' | \
		grep -v '/vendor/' | wc -l
	      51

None of the 51 files are generated. After this change, the same command
prints 0.

For #41184.

Change-Id: Ia96ee2a0f998d6a167d4473bcad17ad09bc1d86e
Reviewed-on: https://go-review.googlesource.com/c/go/+/341009
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
2021-08-13 20:45:17 +00:00
Matthew Dempsky
a64ab8d3ec [dev.typeparams] all: merge master (46fd547) into dev.typeparams
Conflicts:

- src/go/types/check_test.go

  CL 324730 on dev.typeparams changed the directory paths in TestCheck,
  TestExamples, and TestFixedbugs and renamed checkFiles to testFiles;
  whereas CL 337529 on master added a new test case just above them and
  that used checkFiles.

Merge List:

+ 2021-08-12 46fd547d89 internal/goversion: update Version to 1.18
+ 2021-08-12 5805efc78e doc/go1.17: remove draft notice
+ 2021-08-12 39634e7dae CONTRIBUTORS: update for the Go 1.17 release
+ 2021-08-12 095bb790e1 os/exec: re-enable LookPathTest/16
+ 2021-08-11 dea23e9ca8 src/make.*: make --no-clean flag a no-op that prints a warning
+ 2021-08-11 d4c0ed26ac doc/go1.17: linker passes -I to extld as -Wl,--dynamic-linker
+ 2021-08-10 1f9c9d8530 doc: use "high address/low address" instead of "top/bottom"
+ 2021-08-09 f1dce319ff cmd/go: with -mod=vendor, don't panic if there are duplicate requirements
+ 2021-08-09 7aeaad5c86 runtime/cgo: when using msan explicitly unpoison cgoCallers
+ 2021-08-08 507cc341ec doc: add example for conversion from slice expressions to array ptr
+ 2021-08-07 891547e2d4 doc/go1.17: fix a typo introduced in CL 335135
+ 2021-08-06 8eaf4d16bc make.bash: do not overwrite GO_LDSO if already set
+ 2021-08-06 63b968f4f8 doc/go1.17: clarify Modules changes
+ 2021-08-06 70546f6404 runtime: allow arm64 SEH to be called if illegal instruction
+ 2021-08-05 fd45e267c2 runtime: warn that KeepAlive is not an unsafe.Pointer workaround
+ 2021-08-04 6e738868a7 net/http: speed up and deflake TestCancelRequestWhenSharingConnection
+ 2021-08-02 8a7ee4c51e io/fs: don't use absolute path in DirEntry.Name doc
+ 2021-07-31 b8ca6e59ed all: gofmt
+ 2021-07-30 b7a85e0003 net/http/httputil: close incoming ReverseProxy request body
+ 2021-07-29 70fd4e47d7 runtime: avoid possible preemption when returning from Go to C
+ 2021-07-28 9eee0ed439 cmd/go: fix go.mod file name printed in error messages for replacements
+ 2021-07-28 b39e0f461c runtime: don't crash on nil pointers in checkptrAlignment
+ 2021-07-27 7cd10c1149 cmd/go: use .mod instead of .zip to determine if version has go.mod file
+ 2021-07-27 c8cf0f74e4 cmd/go: add missing flag in UsageLine
+ 2021-07-27 7ba8e796c9 testing: clarify T.Name returns a distinct name of the running test
+ 2021-07-27 33ff155970 go/types: preserve untyped constants on the RHS of a shift expression
+ 2021-07-26 840e583ff3 runtime: correct variable name in comment
+ 2021-07-26 bfbb288574 runtime: remove adjustTimers counter
+ 2021-07-26 9c81fd53b3 cmd/vet: add missing copyright header

Change-Id: Ia80604d24c6f4205265683024e3100769cf32065
2021-08-12 12:43:12 -07:00
Ian Lance Taylor
7aeaad5c86 runtime/cgo: when using msan explicitly unpoison cgoCallers
This avoids an incorrect msan uninitialized memory report when using
runtime.SetCgoTraceback when a signal occurs while the fifth argument
register is undefined. See the issue for more details.

Fixes #47543

Change-Id: I3d1b673e2c93471ccdae0171a99b88b5a6062840
Reviewed-on: https://go-review.googlesource.com/c/go/+/339902
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2021-08-09 14:48:39 +00:00
Matthew Dempsky
804ecc2581 [dev.typeparams] all: add GOEXPERIMENT=unified knob
Setting `-gcflags=all=-d=unified` works for normal builds/tests, but
seems to have trouble with the test/run.go regress tests. So add a
GOEXPERIMENT knob to allow another way to turn on unified IR
construction, which plays better with all.bash.

While here, update two existing test expectations that currently fail
during GOEXPERIMENT=unified ./all.bash:

1. misc/cgo/errors/testdata/err2.go is testing column positions, and
types2 gets one case slightly better, and another case slightly
worse. For now, the test case is updated to accept both.

2. fixedbugs/issue42284.go is added to the list of known failures,
because it fails for unified IR. (It's an escape analysis test, and
escape analysis is working as expected; but unified is formatting an
imported constant value differently than the test's regexp expects.)

Updates #46786.

Change-Id: I40a4a70fa1b85ac87fcc85a43687f5d81e011ec0
Reviewed-on: https://go-review.googlesource.com/c/go/+/328215
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2021-06-17 09:09:02 +00:00
Jason A. Donenfeld
14305bf0b9 misc/cgo: generate Windows import libraries for clang
LLD won't import a .dll directly and instead requires an import library.
So generate these using -out-implib, the same way as was done in CL
312046, where it makes sense, and elsewhere build the import library
using a def file. We can't use -out-implib all the time, because the
output file gets overwritten each time the linker is called, rather than
merged.

Updates #46502.

Change-Id: Iefe54cb6c576004b83b1039ba673881b8640423d
Reviewed-on: https://go-review.googlesource.com/c/go/+/327211
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-06-13 23:53:43 +00:00
Jason A. Donenfeld
24cff0f044 cmd/go, misc/cgo: skip test if no .edata
Clang does not produce binaries with an .edata section, even when it
exports symbols properly, so just skip this binutils-specific test for
that case. Later we can rewrite these tests entirely to do something
more robust.

Updates #46719.

Change-Id: I864b3c2d91e66800c55454ae11d4ab1623693d14
Reviewed-on: https://go-review.googlesource.com/c/go/+/327549
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-06-13 08:17:17 +00:00
Ian Lance Taylor
9d669ed47a misc/cgo/errors: use expected column numbers
The test was using the wrong column numbers, and was erroneously
passing because there happened to be line numbers that matched those
column numbers. Change the test harness to require the expected line
number for the ERROR HERE regexp case, so that this doesn't happen again.

Also rename a couple of variables in the test to avoid useless
redeclaration errors.

Fixes #46534

Change-Id: I2fcbf5e379c346de5346035c73d174a3980c0927
Reviewed-on: https://go-review.googlesource.com/c/go/+/324970
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-06-05 04:40:03 +00:00