Linux kernel on loong64 has no Dup2 syscall support, so we use Dup3 to replace it like arm64 and riscv64.
Updates #53301Fixes#58784
Change-Id: I4e0be140a71b86f4626ed39d76cf3ac78f842018
Reviewed-on: https://go-review.googlesource.com/c/go/+/425478
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: WANG Xuerui <git@xen0n.name>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: xiaodong liu <teaofmoli@gmail.com>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Change-Id: Iae6ac32db5c2aacb323793a7e0dc34e09648d035
Reviewed-on: https://go-review.googlesource.com/c/go/+/482295
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: David Chase <drchase@google.com>
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Auto-Submit: Ian Lance Taylor <iant@golang.org>
Change-Id: I5d02279d0593a8368b2f249a6b53650b89aed7b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/482275
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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This script uses Wazero, the open source, zero dependencies
pure Go Wasm and WASI runtime. This is the runtime that allows
the greatest number of standard library tests to pass.
For #58141
Co-authored-by: Richard Musiol <neelance@gmail.com>
Co-authored-by: Achille Roussel <achille.roussel@gmail.com>
Co-authored-by: Julien Fabre <ju.pryz@gmail.com>
Co-authored-by: Evan Phoenix <evan@phx.io>
Change-Id: I789465ae4daf2b380f3c05a9365b8d449c6af56c
Reviewed-on: https://go-review.googlesource.com/c/go/+/479620
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
This reapplies CL 392854, with the followup fixes in CL 479255,
CL 479915, and CL 481057 incorporated.
CL 392854, by doujiang24 <doujiang24@gmail.com>, speed up C to Go
calls by binding the M to the C thread. See below for its
description.
CL 479255 is a followup fix for a small bug in ARM assembly code.
CL 479915 is another followup fix to address C to Go calls after
the C code uses some stack, but that CL is also buggy.
CL 481057, by Michael Knyszek, is a followup fix for a memory leak
bug of CL 479915.
[Original CL 392854 description]
In a C thread, it's necessary to acquire an extra M by using needm while invoking a Go function from C. But, needm and dropm are heavy costs due to the signal-related syscalls.
So, we change to not dropm while returning back to C, which means binding the extra M to the C thread until it exits, to avoid needm and dropm on each C to Go call.
Instead, we only dropm while the C thread exits, so the extra M won't leak.
When invoking a Go function from C:
Allocate a pthread variable using pthread_key_create, only once per shared object, and register a thread-exit-time destructor.
And store the g0 of the current m into the thread-specified value of the pthread key, only once per C thread, so that the destructor will put the extra M back onto the extra M list while the C thread exits.
When returning back to C:
Skip dropm in cgocallback, when the pthread variable has been created, so that the extra M will be reused the next time invoke a Go function from C.
This is purely a performance optimization. The old version, in which needm & dropm happen on each cgo call, is still correct too, and we have to keep the old version on systems with cgo but without pthreads, like Windows.
This optimization is significant, and the specific value depends on the OS system and CPU, but in general, it can be considered as 10x faster, for a simple Go function call from a C thread.
For the newly added BenchmarkCGoInCThread, some benchmark results:
1. it's 28x faster, from 3395 ns/op to 121 ns/op, in darwin OS & Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
2. it's 6.5x faster, from 1495 ns/op to 230 ns/op, in Linux OS & Intel(R) Xeon(R) CPU E5-2630 0 @ 2.30GHz
[CL 479915 description]
Currently, when C calls into Go the first time, we grab an M
using needm, which sets m.g0's stack bounds using the SP. We don't
know how big the stack is, so we simply assume 32K. Previously,
when the Go function returns to C, we drop the M, and the next
time C calls into Go, we put a new stack bound on the g0 based on
the current SP. After CL 392854, we don't drop the M, and the next
time C calls into Go, we reuse the same g0, without recomputing
the stack bounds. If the C code uses quite a bit of stack space
before calling into Go, the SP may be well below the 32K stack
bound we assumed, so the runtime thinks the g0 stack overflows.
This CL makes needm get a more accurate stack bound from
pthread. (In some platforms this may still be a guess as we don't
know exactly where we are in the C stack), but it is probably
better than simply assuming 32K.
Fixes#51676.
Fixes#59294.
Change-Id: I9bf1400106d5c08ce621d2ed1df3a2d9e3f55494
Reviewed-on: https://go-review.googlesource.com/c/go/+/481061
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: DeJiang Zhu (doujiang) <doujiang24@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This reverts CL 392854.
Reason for revert: caused #59294, which was derived from google
internal tests. The attempted fix of #59294 caused more breakage.
Change-Id: I5a061561ac2740856b7ecc09725ac28bd30f8bba
Reviewed-on: https://go-review.googlesource.com/c/go/+/481060
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This reverts CL 479915.
Reason for revert: breaks a lot google internal tests.
Change-Id: I13a9422e810af7ba58cbf4a7e6e55f4d8cc0ca51
Reviewed-on: https://go-review.googlesource.com/c/go/+/481055
Reviewed-by: Chressie Himpel <chressie@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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Currently, when C calls into Go the first time, we grab an M
using needm, which sets m.g0's stack bounds using the SP. We don't
know how big the stack is, so we simply assume 32K. Previously,
when the Go function returns to C, we drop the M, and the next
time C calls into Go, we put a new stack bound on the g0 based on
the current SP. After CL 392854, we don't drop the M, and the next
time C calls into Go, we reuse the same g0, without recomputing
the stack bounds. If the C code uses quite a bit of stack space
before calling into Go, the SP may be well below the 32K stack
bound we assumed, so the runtime thinks the g0 stack overflows.
This CL makes needm get a more accurate stack bound from
pthread. (In some platforms this may still be a guess as we don't
know exactly where we are in the C stack), but it is probably
better than simply assuming 32K.
For #59294.
Change-Id: Ie52a8f931e0648d8753e4c1dbe45468b8748b527
Reviewed-on: https://go-review.googlesource.com/c/go/+/479915
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
In a C thread, it's necessary to acquire an extra M by using needm while invoking a Go function from C. But, needm and dropm are heavy costs due to the signal-related syscalls.
So, we change to not dropm while returning back to C, which means binding the extra M to the C thread until it exits, to avoid needm and dropm on each C to Go call.
Instead, we only dropm while the C thread exits, so the extra M won't leak.
When invoking a Go function from C:
Allocate a pthread variable using pthread_key_create, only once per shared object, and register a thread-exit-time destructor.
And store the g0 of the current m into the thread-specified value of the pthread key, only once per C thread, so that the destructor will put the extra M back onto the extra M list while the C thread exits.
When returning back to C:
Skip dropm in cgocallback, when the pthread variable has been created, so that the extra M will be reused the next time invoke a Go function from C.
This is purely a performance optimization. The old version, in which needm & dropm happen on each cgo call, is still correct too, and we have to keep the old version on systems with cgo but without pthreads, like Windows.
This optimization is significant, and the specific value depends on the OS system and CPU, but in general, it can be considered as 10x faster, for a simple Go function call from a C thread.
For the newly added BenchmarkCGoInCThread, some benchmark results:
1. it's 28x faster, from 3395 ns/op to 121 ns/op, in darwin OS & Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
2. it's 6.5x faster, from 1495 ns/op to 230 ns/op, in Linux OS & Intel(R) Xeon(R) CPU E5-2630 0 @ 2.30GHz
Fixes#51676
Change-Id: I380702fe2f9b6b401b2d6f04b0aba990f4b9ee6c
GitHub-Last-Rev: 93dc64ad98
GitHub-Pull-Request: golang/go#51679
Reviewed-on: https://go-review.googlesource.com/c/go/+/392854
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Run-TryBot: thepudds <thepudds1460@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
For G[T] that was seen and compiled in imported package, it is not added
to typecheck.Target.Decls, prevent wasting compile time re-creating
DUPOKS symbols. However, the linker do not support a type symbol
referencing a method symbol across DSO boundary. That causes unreachable
sym error when building under -linkshared mode.
To fix it, always re-compile generic methods in linkshared mode.
Fixes#58966
Change-Id: I894b417cfe8234ae1fe809cc975889345df22cef
Reviewed-on: https://go-review.googlesource.com/c/go/+/477375
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Change-Id: Ifb8d64f18b67c8b712feec29ffb6719c6e9718ec
Reviewed-on: https://go-review.googlesource.com/c/go/+/474198
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Go programs can now use the //go:wasmimport module_name function_name
directive to import functions from the WebAssembly runtime.
For now, the directive is restricted to the runtime and syscall/js
packages.
* Derived from CL 350737
* Original work modified to work with changes to the IR conversion code.
* Modification of CL 350737 changes to fully exist in Unified IR path (emp)
* Original work modified to work with changes to the ABI configuration code.
* Fixes#38248
Co-authored-by: Vedant Roy <vroy101@gmail.com>
Co-authored-by: Richard Musiol <mail@richard-musiol.de>
Co-authored-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Change-Id: I740719735d91c306ac718a435a78e1ee9686bc16
Reviewed-on: https://go-review.googlesource.com/c/go/+/463018
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
The misc/cgo/life and misc/cgo/stdio tests started out as fairly simple
test cases when they were added, but the machinery to execute them has
grown in complexity over the years.
They currently reuse the test/run.go runner and its "run" action without
needing much of the additional flexibility that said runner implements.
Given that runner isn't well documented, it makes it harder to see that
ultimately these tests just do 'go run' on a few test programs and check
that the output matches a golden file.
Maybe these test cases should move out of misc to be near similar tests,
or the machinery to execute them can made available in a package that is
easier and safer to reuse. I'd rather not block the refactor of the test
directory runner on that, so for now rewrite these to be self-contained.
Also delete misc/cgo/stdio/testdata/run.out which has no effect on the
test. It was seemingly accidentally kept behind during the refactor in
CL 6220049.
For #56844.
Change-Id: I5e2f542824925092cdddb03b44b6295a4136ccb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/465755
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Austin Clements <austin@google.com>
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Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Move this knob from a binary-startup thing to a build-time thing.
This will enable followon optmizations to the write barrier.
Change-Id: Ic3323348621c76a7dc390c09ff55016b19c43018
Reviewed-on: https://go-review.googlesource.com/c/go/+/447778
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
The default NodeJS V8 stack size is 984K, which is not enough to run
the regexp or go/parser tests. This commit increases the stack size
to 8192K, which removes the stack size limit error.
Fixes#56498Fixes#57614
Change-Id: I357885d420daf259187403deab25ff587defa0fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/463994
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Julien Fabre <ju.pryz@gmail.com>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
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The move to NodeJS 18 allows us to replace the custom
crypto functions with the expanded crypto primitives of
the NodeJS crypto library.
Fixes#56860
Change-Id: I8726b4003150f31521f246f613b6976641b9fa69
Reviewed-on: https://go-review.googlesource.com/c/go/+/463975
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Evan Phoenix <evan@phx.io>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
The path /bin/bash is not available on all operating systems.
Use /usr/bin/env bash to find the system bash interpreter.
Change-Id: I493e462a8e261b7fbbd3f3c0b1d10e55c5ed783b
Reviewed-on: https://go-review.googlesource.com/c/go/+/463977
Reviewed-by: Bryan Mills <bcmills@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Evan Phoenix <evan@phx.io>
The upgrade to NodeJS 18 introduces various library
updates that mean we can no longer override the global
performance package. Instead, rely on the performance
library provided by the NodeJS runtime.
Fixes#57516
Change-Id: Ic8ed902c696ad154f676e0b74b42efb84f02f8db
Reviewed-on: https://go-review.googlesource.com/c/go/+/463234
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Evan Phoenix <evan@phx.io>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Doing this allows updates to swig so it can access slices
and strings in a somewhat less-unsafe way.
Change-Id: If2af8f8cf58d2287569dcd7c7ce09728e20b5ff0
Reviewed-on: https://go-review.googlesource.com/c/go/+/463396
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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This is the second round to look for spelling mistakes. This time the
manual sifting of the result list was made easier by filtering out
capitalized and camelcase words.
grep -r --include '*.go' -E '^// .*$' . | aspell list | grep -E -x '[A-Za-z]{1}[a-z]*' | sort | uniq
This PR will be imported into Gerrit with the title and first
comment (this text) used to generate the subject and body of
the Gerrit change.
Change-Id: Ie8a2092aaa7e1f051aa90f03dbaf2b9aaf5664a9
GitHub-Last-Rev: fc2bd6e0c5
GitHub-Pull-Request: golang/go#57737
Reviewed-on: https://go-review.googlesource.com/c/go/+/461595
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
Change-Id: Ie46bc3cbfb2622b5eb70618557ff5398866f5607
GitHub-Last-Rev: a665ef84dd
GitHub-Pull-Request: golang/go#57813
Reviewed-on: https://go-review.googlesource.com/c/go/+/462044
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Reviewed-by: Cherry Mui <cherryyz@google.com>
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Run-TryBot: Ian Lance Taylor <iant@google.com>
This fixes the test after CL 455357, which builds the time/tzdata file
from $GOROOT/lib/time/zoneinfo.zip.
Change-Id: I0c5afa6521b58dd3b57c3b4c3c704a622b846382
Reviewed-on: https://go-review.googlesource.com/c/go/+/462279
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Than McIntosh <thanm@google.com>
The libFuzzer generated binary by default writes failure input
into the current directory. Set cmd.Dir to the temporary directory
so it won't write to GOROOT when running the test.
Change-Id: I3e4ce7e3f845be5c9f09511c36e7a9a396eafad2
Reviewed-on: https://go-review.googlesource.com/c/go/+/459556
Reviewed-by: Than McIntosh <thanm@google.com>
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Apparently we don't have tests for libfuzzer mode. Add some tests.
Updates #57449.
Change-Id: I813da3e71c6d6f15db31914b248db220b0b7041e
Reviewed-on: https://go-review.googlesource.com/c/go/+/459555
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Test that "go install -buildmode=shared std" works.
For #57334.
Change-Id: I465a07cf2e9035995916ef9940b4c1eeba998099
Reviewed-on: https://go-review.googlesource.com/c/go/+/459056
Reviewed-by: Than McIntosh <thanm@google.com>
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This CL updates the cgo tool to walk the TypeParams fields for
function types and type declarations, so that C.xxx identifiers can
appear within type parameter lists.
Fixes#52542.
Change-Id: Id02a88d529d50fe59b0a834f415c2575204ffd1f
Reviewed-on: https://go-review.googlesource.com/c/go/+/453977
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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I accidentally reverted its edits with a bad cherry-pick in CL 452457.
This should re-fix the windows-.*-newcc builders that regressed at
that change.
Updates #47257.
Updates #35006.
Updates #53540.
Change-Id: I5818416af7c4c8c1593c36aa0198331b42b6c7d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/452675
Run-TryBot: Bryan Mills <bcmills@google.com>
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As of CL 450739, we do not need install targets for cgo files when a C
compiler is not present because cgo is not enabled by default.
(Without a C compiler, builds will proceed with cgo disabled.)
Fixes#47257.
Fixes#56888.
Change-Id: I274c50a60b5b1382e291df86a5464da8ad3695a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/452457
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
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Adapt the testcshared tests to handle the case where the path output
by invoking
gcc -print-prog-name=dlltool
is a path lacking the final ".exe" suffix (this seems to be what clang
is doing); tack it on before using if this is the case.
Updates #35006.
Updates #53540.
Change-Id: I04fb7b9fc90677880b1ced4a4ad2a8867a3f5f86
Reviewed-on: https://go-review.googlesource.com/c/go/+/451816
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Alpine has a known issue where setgid clobbers the Go stack (#39857).
misc/cgo/test skips other tests that use setgid on Alpine, but not
this one. It's not clear to me why this test *used to* pass, but when
I refactored misc/cgo/test in CL 447355 it started failing.
Disable this test on Alpine, like the other setgid tests.
Change-Id: I2e646ef55e2201a4f0b377319d719a011ec847f0
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When we were first introducing module mode, CL 163418 moved many of
the tests in misc/cgo/test into their own test binary under testdata
so misc/cgo/test continued to work in both GOPATH mode and module
mode. This introduce a somewhat complicated test driver into
misc/cgo/test. Since the misc/cgo/test test had to invoke "go test" as
a subprocess, this required care to thread any build flags down into
the subprocess. The output from any failures of the sub-process was
also less than ideal.
Now that we don't have to worry about running these in GOPATH mode any
more, this CL moves all of the tests back into misc/cgo/test and drops
the test driver.
There are two slight complications:
- Test41761 was added after this split and has a C type "S" that's
also present in misc/cgo/test itself. We rename that to keep that
test working.
- TestCgo in go/internal/srcimporter now fails to import misc/cgo/test
because misc/cgo/test now contains imports of other "misc" module
packages and the importer it sets up isn't configured to allow that.
We fix this by setting up a build context that's configured for
this.
Preparation for #37486.
Change-Id: I3c4f73540e0482bbd493823cca44b0ce7fac01f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/447355
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Packages in GOROOT that don't use cgo will not be installed in
GOROOT/pkg, and will instead be cached as usual like other Go
packages.
- add a internal/buildinternal package to hold the identities of the
five packages that use cgo
- update dist's test code to do a go build std cmd before checking
staleness on builders. Because most of those packages no longer have
install locations, and have dependencies that don't either, the
packages need to be cached to not be stale.
- fix index_test to import packages with the path "." when preparing
the "want" values to compare the indexed data to. (the module index
matches the behavior of build.ImportDir, which always passes in "."
as the path.
- In both the index and go/build Importers, don't set
PkgObj for GOROOT packages which will no longer have install
targets. PkgTargetRoot will still be set to compute target paths,
which will still be needed in buildmode=shared.
- "downgrade" all install actions that don't have a target to build
actions. (The target should already not be set for packages that
shouldn't be installed).
For #47257
Change-Id: Ia5aee6b3b20b58e028119cf0352a4c4a2f10f6b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/432535
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Currently, the entry-point to this test is a Bash script that smoke
tests the FORTRAN compiler and then runs a FORTRAN-containing Go test.
This CL rearranges things so a pure Go Go test smoke tests the FORTRAN
compiler and then runs a non-test FORTRAN-containing Go binary.
While we're here, we fix a discrepancy when the host is GOARCH=amd64,
but the target is GOARCH=386. Previously, we would pick the wrong
libgfortran path because we didn't account for the cross-compilation,
causing the link to fail. Except for some reason this was ignored and
the test nevertheless "passed". In the new test we're a little more
strict, so this build failure will cause the test to fail, so we add a
little logic to account for cross-compilation with the host toolchain.
For #37486.
Change-Id: Ie6f70066885d6fbb4e1b5a2b1e13b85dee5b359b
Reviewed-on: https://go-review.googlesource.com/c/go/+/443069
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Austin Clements <austin@google.com>
This migrates testsigfwd, which uses some one-off build
infrastructure, to be part of the runtime's testprogcgo.
The test is largely unchanged. Because it's part of a larger binary,
this CL renames a few things and gates the constructor-time signal
handler registration on an environment variable. This CL also replaces
an errant fmt.Errorf with fmt.Fprintf.
For #37486, since it eliminates a non-go-test from dist.
Change-Id: I0efd146ea0a0a3f0b361431349a419af0f0ecc61
Reviewed-on: https://go-review.googlesource.com/c/go/+/443068
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This code was introduced in CL 17903 but has never executed. It's also
fundamentally non-deterministic. Delete it.
Simplification for #37486.
Change-Id: I049564123fb4fba401154e2ea0fc429e552d4749
Reviewed-on: https://go-review.googlesource.com/c/go/+/431258
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
The testasan test was added back in 2013 (CL 10126044), many years
before Go added ASAN support in 2021 (CL 298611). So, in fact,
testasan does not test Go ASAN support at all, as you might expect
(misc/cgo/testsanitizers does that). It's intended to test whether the
Go memory allocator works in a mixed C/Go binary where the C code is
compiled with ASAN. The test doesn't actually use ASAN in any way; it
just simulates where ASAN of 2013 put its shadow mappings. This made
sense to test at the time because Go was picky about where its heap
landed and ASAN happened to put its mappings exactly where Go wanted
to put its heap. These days, Go is totally flexible about its heap
placement, and I wouldn't be surprised if ASAN also works differently.
Given all of this, this test adds almost no value today. Drop it.
For #37486, since it eliminates a non-go-test from dist.
Change-Id: I0292f8efbdc0e1e39650715604535c445fbaa87f
Reviewed-on: https://go-review.googlesource.com/c/go/+/443067
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Austin Clements <austin@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Adjust os/arch checks to enable msan tests on freebsd/amd64.
R=go1.20
For #53298
Change-Id: I3d0f5259db73d526d006a12de5ba6284528cf819
Reviewed-on: https://go-review.googlesource.com/c/go/+/411276
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
The linker's -X flag allows setting/changing a string variable's
content at link time. Currently it resets its size then write a
new string header pointing to the new content. This mostly works.
But under ASAN build the string variable can have larger size
than the usual 2 words, due to the red zone. Resetting the size
can cause the variable to "overlap" (in ASAN's view) with other
variables. Don't reset the size.
Fixes#56175.
Change-Id: Ib364208201a7a2fd7f44f9b1797834198736a405
Reviewed-on: https://go-review.googlesource.com/c/go/+/442635
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
While we're here, replace a couple uses of os.Environ with cmd.Environ.
For #51317.
Change-Id: Ic5cf4a887a7975a8281223eec0f94df230b6f095
Reviewed-on: https://go-review.googlesource.com/c/go/+/431955
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
String.prototype.substr is deprecated and usage is no longer
recommended so using String.prototype.substring instead.
Change-Id: I9eb49a8c065890df73301e3a04af59f550bc3ae1
Reviewed-on: https://go-review.googlesource.com/c/go/+/406094
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
cmd/dist can't easily hard-code -buildvcs=false because not all
versions of cmd/go supported for bootstrapping recognize that flag.
However, we don't want to stamp the bootstrap binaries: the stamping
is redundant with the VERSION file writted during bootstrapping (which
is why it is normally omitted for standard-library packages and
commands), and it may also interfere with building the Go repo from a
source tarball or zip file.
Fixes#54852.
Change-Id: If223f094af137c4c202d6bf622619bd2da397ec4
Reviewed-on: https://go-review.googlesource.com/c/go/+/432435
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
For #45557
Change-Id: I25be5b437fa1c9b0e0c46802a9b37efc2d47bca0
Reviewed-on: https://go-review.googlesource.com/c/go/+/431097
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Since os.SEEK_SET was deprecated, use io.SeekStart instead.
Change-Id: I11ae496b071ab35412403ff73e52f3da73d5b120
Reviewed-on: https://go-review.googlesource.com/c/go/+/431096
Run-TryBot: Ian Lance Taylor <iant@google.com>
Run-TryBot: hopehook <hopehook@golangcn.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Change-Id: Icb53d32f2de13287b1b4f4f67dab90fe5ee7a3df
Reviewed-on: https://go-review.googlesource.com/c/go/+/428254
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Some tests in misc/cgo/testsanitizers had been disabled on ppc64le
until recently, due to an intermittent error in the tsan tests,
with the goal of trying to understand the failure.
After further investigation, I found that the code for tsan within
gcc does not work consistently when ASLR is enabled on ppc64le. A
fix for that problem was integrated in gcc 9.
This adds a check to testsanitizers to determine the gcc compiler
version on ppc64le and skip the test if the version is too old.
A similar check is needed for asan too.
Updates #54645
Change-Id: I70717d1aa9e967cf1e871566e72b3862b91fea3f
Reviewed-on: https://go-review.googlesource.com/c/go/+/425355
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Archana Ravindar <aravind5@in.ibm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
We don't have a good musl detection mechanism, so we detect Alpine (the
most common user of musl) instead.
For #39857.
For #19938.
Change-Id: I2fa39248682aed75884476374fe2212be4427347
Reviewed-on: https://go-review.googlesource.com/c/go/+/425001
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Occasionally the signal will be sent to a Go thread, which will cause
the program to exit with SIGQUIT rather than SIGSEGV.
Add TestSignalForwardingGo to test the case where the signal is
expected to be delivered to a Go thread.
This is a roll forward of CL 419014 which was rolled back in CL 424954.
This CL differs from 419014 in that it skips TestSignalForwardingGo
on darwin-amd64.
Fixes#53907
Change-Id: I5df3fd610c068df3bd48d9b3d7a9379248b97999
Reviewed-on: https://go-review.googlesource.com/c/go/+/425002
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
