For #73526
Change-Id: I06d8ae9080695745db68a51635faa0b244c1760e
Reviewed-on: https://go-review.googlesource.com/c/go/+/670155
Reviewed-by: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Mark Freeman <mark@golang.org>
Auto-Submit: Mark Freeman <mark@golang.org>
The doInRoot function operates on a path split into components.
The final path component retained any trailing path separator
characters, to permit operations in a Root to retain the
trailing-separator behavior of non-Root operations. However,
doInRoot failed to take trailing separators into account
when checking for .. path components.
This could permit opening the parent directory of the Root
with a path ending in "../".
Change the split path to never include path separators in
components, and handle trailing separators independently
of the split path.
Thanks to Dan Sebastian Thrane of SDU eScience Center for
reporting this issue.
Fixes#73555
Fixes CVE-2025-22873
Change-Id: I9a33a145c22f5eb1dd4e4cafae5fcc61a8d4f0d4
Reviewed-on: https://go-internal-review.googlesource.com/c/go/+/2160
Reviewed-by: Neal Patel <nealpatel@google.com>
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/670036
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
I think that SectionKind better conveys the original intent here, and
goes nicely with codifying section relative indices.
Change-Id: I96a245e67295a5f9f8e462756a14f60eccec6862
Reviewed-on: https://go-review.googlesource.com/c/go/+/668538
Reviewed-by: Mark Freeman <mark@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Mark Freeman <mark@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
Change-Id: I214eb97ef3b11a6de8584498f2df4baff1903e1d
Reviewed-on: https://go-review.googlesource.com/c/go/+/668537
Auto-Submit: Mark Freeman <mark@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Mark Freeman <mark@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This creates the infrastructure needed to record compiler panics
induced somewhere beneath a declaration. For now, this is turned
off via a flag.
This does not yet use the position information for better error
messages. That is moved off to a separate CL.
Change-Id: I6b44135a84ebd2f4c0141408ba9228d72c497d55
Reviewed-on: https://go-review.googlesource.com/c/go/+/664475
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Mark Freeman <mark@golang.org>
Auto-Submit: Mark Freeman <mark@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Currently, the `source` method in `slog.Record` is not accessible to
custom handlers, requiring developers to re-implement logic for
retrieving source location information. This commit exports the `source`
method as `Source`, enabling consistent access for custom logging
handlers and reducing code redundancy.
Fixes#70280
Change-Id: I3eb3bc60658abc5de95697a10bddd11ab54c6e13
GitHub-Last-Rev: bd81afe5a5
GitHub-Pull-Request: golang/go#70281
Reviewed-on: https://go-review.googlesource.com/c/go/+/626976
Reviewed-by: qiu laidongfeng2 <2645477756@qq.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Change-Id: I71cc0db153c559d4c5b48d1d744daf16deffe6d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/668536
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Mark Freeman <mark@golang.org>
Auto-Submit: Mark Freeman <mark@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
So we can avoid using a TEST where it isn't needed.
Currently only implemented for ADD{Q,L}const.
Change-Id: Ia9c4c69bb6033051a45cfd3d191376c7cec9d423
Reviewed-on: https://go-review.googlesource.com/c/go/+/669875
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Keith Randall <khr@golang.org>
Line directives should not affect the way Comments get grouped
into CommentGroups.
Change-Id: I9aa4b558cb1333b32be692e8720291d0e6961cae
GitHub-Last-Rev: de867b27bf
GitHub-Pull-Request: golang/go#69133
Reviewed-on: https://go-review.googlesource.com/c/go/+/609515
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Alan Donovan <adonovan@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
The runtime poller and os.NewFile recently gained support for
disassociating the handle from the runtime poller IOCP (see CL 664455).
This was the main blocker for allowing the conversion between *os.File
and net.Conn.
Implementing the conversion is now trivial. The only remaining work,
implemented in this CL, is improving os.NewFile to also support
socket handles and updating some build tags so that Windows can share
almost the same net's File implementation as Unix.
There is one important limitation, though: the duplicated socket handle
returned by the various File methods in the net package is not
usable on other process. If someone needs to pass a socket handle to
another process, they should manually call the WSADuplicateSocket
Windows API passing the process ID of the target process.
Fixes#9503.
Fixes#10350.
Updates #19098.
Cq-Include-Trybots: luci.golang.try:gotip-windows-amd64-race,gotip-windows-amd64-longtest,gotip-windows-arm64
Change-Id: Ic43cadaac2662b925d57a9d362ddc7ae21d1b56e
Reviewed-on: https://go-review.googlesource.com/c/go/+/668195
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Corollary to CL 669615.
morestack uses the frame pointer from g0.sched.bp. This doesn't really
make any sense. morestack wasn't called by whatever used g0 last, so at
best unwinding will get misleading results.
For #63630.
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-linux-arm64-longtest
Change-Id: I6a6a636c3a2994eb88f890c506c96fd899e993a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/669616
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Nick Ripley <nick.ripley@datadoghq.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
On arm64, systemstack restores the frame pointer from g0.sched to R29
prior to calling the callback. That doesn't really make any sense. The
frame pointer value in g0.sched is some arbitrary BP from a prior
context save, but that is not the caller of systemstack.
amd64 does not do this. In fact, it leaves BP completely unmodified so
frame pointer unwinders like gdb can walk through the systemstack frame
and continue traceback on the caller's stack. Unlike mcall, systemstack
always returns to the original goroutine, so that is safe.
We should do the same on arm64.
For #63630.
Cq-Include-Trybots: luci.golang.try:gotip-linux-arm64-longtest
Change-Id: I6a6a636c35d321dd5d7dc1c4d09e29b55b1ab621
Reviewed-on: https://go-review.googlesource.com/c/go/+/669236
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Nick Ripley <nick.ripley@datadoghq.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
On amd64, mcall leaves BP untouched, so the callback will push BP,
connecting the g0 stack to the calling g stack. This seems OK (frame
pointer unwinders like Linux perf can see what user code called into the
scheduler), but the "scheduler" part is problematic.
mcall is used when calling into the scheduler to deschedule the current
goroutine (e.g., in goyield). Once the goroutine is descheduled, it may
be picked up by another M and continue execution. The other thread is
mutating the goroutine stack, but our M still has a frame pointer
pointing to the goroutine stack.
A frame pointer unwinder like Linux perf could get bogus values off of
the mutating stack. Note that though the execution tracer uses
framepointer unwinding, it never unwinds a g0, so it isn't affected.
Clear the frame pointer in mcall so that unwinding always stops at
mcall.
On arm64, mcall stores the frame pointer from g0.sched.bp. This doesn't
really make any sense. mcall wasn't called by whatever used g0 last, so
at best unwinding will get misleading results (e.g., it might look like
cgocallback calls mcall?).
Also clear the frame pointer on arm64.
Other architectures don't use frame pointers.
For #63630.
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-linux-arm64-longtest
Change-Id: I6a6a636cb6404f3c95ecabdb969c9b8184615cee
Reviewed-on: https://go-review.googlesource.com/c/go/+/669615
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Nick Ripley <nick.ripley@datadoghq.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
The existing implementation lacks the Status function for retrieving VCS build
information for Subversion. As a consequence, binaries aren't stamped with the
Revision, CommitTime and Uncommitted information from SVN repositories.
This change provides the svnStatus function and retrieves the information by
running svn info and svn status commands.
Fixes#73444
Change-Id: Ie6d95ffbb3a3c580cc42128ad1f8d82a869c91f2
GitHub-Last-Rev: 3472222865
GitHub-Pull-Request: golang/go#73446
Reviewed-on: https://go-review.googlesource.com/c/go/+/666875
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Sean Liao <sean@liao.dev>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
Our current parallel mark algorithm suffers from frequent stalls on
memory since its access pattern is essentially random. Small objects
are the worst offenders, since each one forces pulling in at least one
full cache line to access even when the amount to be scanned is far
smaller than that. Each object also requires an independent access to
per-object metadata.
The purpose of this change is to improve garbage collector performance
by scanning small objects in batches to obtain better cache locality
than our current approach. The core idea behind this change is to defer
marking and scanning small objects, and then scan them in batches
localized to a span.
This change adds scanned bits to each small object (<=512 bytes) span in
addition to mark bits. The scanned bits indicate that the object has
been scanned. (One way to think of them is "grey" bits and "black" bits
in the tri-color mark-sweep abstraction.) Each of these spans is always
8 KiB and if they contain pointers, the pointer/scalar data is already
packed together at the end of the span, allowing us to further optimize
the mark algorithm for this specific case.
When the GC encounters a pointer, it first checks if it points into a
small object span. If so, it is first marked in the mark bits, and then
the object is queued on a work-stealing P-local queue. This object
represents the whole span, and we ensure that a span can only appear at
most once in any queue by maintaining an atomic ownership bit for each
span. Later, when the pointer is dequeued, we scan every object with a
set mark that doesn't have a corresponding scanned bit. If it turns out
that was the only object in the mark bits since the last time we scanned
the span, we scan just that object directly, essentially falling back to
the existing algorithm. noscan objects have no scan work, so they are
never queued.
Each span's mark and scanned bits are co-located together at the end of
the span. Since the span is always 8 KiB in size, it can be found with
simple pointer arithmetic. Next to the marks and scans we also store the
size class, eliminating the need to access the span's mspan altogether.
The work-stealing P-local queue is a new source of GC work. If this
queue gets full, half of it is dumped to a global linked list of spans
to scan. The regular scan queues are always prioritized over this queue
to allow time for darts to accumulate. Stealing work from other Ps is a
last resort.
This change also adds a new debug mode under GODEBUG=gctrace=2 that
dumps whole-span scanning statistics by size class on every GC cycle.
A future extension to this CL is to use SIMD-accelerated scanning
kernels for scanning spans with high mark bit density.
For #19112. (Deadlock averted in GOEXPERIMENT.)
For #73581.
Change-Id: I4bbb4e36f376950a53e61aaaae157ce842c341bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/658036
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
TestIssue64958 takes a while, so it's not worth running both without
and with -check flag. The others are fast, but there's still no good
reason to run anything but TestCheck when the -check flag is on.
Change-Id: I13ebb90e3c863006f21441909b05364e1b316ed6
Reviewed-on: https://go-review.googlesource.com/c/go/+/668656
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Add support for vector permutation instructions to the RISC-V assembler.
This includes integer scalar move, floating point scalar move, slide up
and slide down, register gather, compression and whole vector register
move instructions.
Change-Id: I1da9f393091504fd81714006355725b8b9ecadea
Reviewed-on: https://go-review.googlesource.com/c/go/+/646780
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
Add support for vector mask instructions to the RISC-V assembler.
These allow manipulation of vector masks and include mask register
logical instructions, population count and find-first bit set
instructions.
Change-Id: I3ab3aa0f918338aee9b37ac5a2b2fdc407875072
Reviewed-on: https://go-review.googlesource.com/c/go/+/646779
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
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Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Add support for vector reduction instructions to the RISC-V assembler,
including single-width integer reduction, widening integer reduction,
single-width floating-point reduction and widening floating-point
reduction.
Change-Id: I8f17bef11389f3a017e0430275023fc5d75936e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/646778
Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Use an automatic algorithm to generate strength reduction code.
You give it all the linear combination (a*x+b*y) instructions in your
architecture, it figures out the rest.
Just amd64 and arm64 for now.
Fixes#67575
Change-Id: I35c69382bebb1d2abf4bb4e7c43fd8548c6c59a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/626998
Reviewed-by: Jakub Ciolek <jakub@ciolek.dev>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
For riscv64/rva22u64 and above, we can intrinsify math/bits.OnesCount
using the CPOP/CPOPW machine instructions. Since the native Go
implementation of OnesCount is relatively expensive, it is also
worth emitting a check for Zbb support when compiled for rva20u64.
On a Banana Pi F3, with GORISCV64=rva22u64:
│ oc.1 │ oc.2 │
│ sec/op │ sec/op vs base │
OnesCount-8 16.930n ± 0% 4.389n ± 0% -74.08% (p=0.000 n=10)
OnesCount8-8 5.642n ± 0% 5.016n ± 0% -11.10% (p=0.000 n=10)
OnesCount16-8 9.404n ± 0% 5.015n ± 0% -46.67% (p=0.000 n=10)
OnesCount32-8 13.165n ± 0% 4.388n ± 0% -66.67% (p=0.000 n=10)
OnesCount64-8 16.300n ± 0% 4.388n ± 0% -73.08% (p=0.000 n=10)
geomean 11.40n 4.629n -59.40%
On a Banana Pi F3, compiled with GORISCV64=rva20u64 and with Zbb
detection enabled:
│ oc.3 │ oc.4 │
│ sec/op │ sec/op vs base │
OnesCount-8 16.930n ± 0% 5.643n ± 0% -66.67% (p=0.000 n=10)
OnesCount8-8 5.642n ± 0% 5.642n ± 0% ~ (p=0.447 n=10)
OnesCount16-8 10.030n ± 0% 6.896n ± 0% -31.25% (p=0.000 n=10)
OnesCount32-8 13.170n ± 0% 5.642n ± 0% -57.16% (p=0.000 n=10)
OnesCount64-8 16.300n ± 0% 5.642n ± 0% -65.39% (p=0.000 n=10)
geomean 11.55n 5.873n -49.16%
On a Banana Pi F3, compiled with GORISCV64=rva20u64 but with Zbb
detection disabled:
│ oc.3 │ oc.5 │
│ sec/op │ sec/op vs base │
OnesCount-8 16.93n ± 0% 29.47n ± 0% +74.07% (p=0.000 n=10)
OnesCount8-8 5.642n ± 0% 5.643n ± 0% ~ (p=0.191 n=10)
OnesCount16-8 10.03n ± 0% 15.05n ± 0% +50.05% (p=0.000 n=10)
OnesCount32-8 13.17n ± 0% 18.18n ± 0% +38.04% (p=0.000 n=10)
OnesCount64-8 16.30n ± 0% 21.94n ± 0% +34.60% (p=0.000 n=10)
geomean 11.55n 15.84n +37.16%
For hardware without Zbb, this adds ~5ns overhead, while for hardware
with Zbb we achieve a performance gain up of up to 11ns. It is worth
noting that OnesCount8 is cheap enough that it is preferable to stick
with the generic version in this case.
Change-Id: Id657e40e0dd1b1ab8cc0fe0f8a68df4c9f2d7da5
Reviewed-on: https://go-review.googlesource.com/c/go/+/660856
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Change-Id: I22eb4e7444e5fe5f6767cc960895f3c6e2fa13cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/661615
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Carlos Amedee <carlos@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Add support for vector floating-point instructions to the RISC-V
assembler. This includes single-width and widening addition and
subtraction, multiplication and division, fused multiply-addition,
comparison, min/max, sign-injection, classification and type
conversion instructions.
Change-Id: I8bceb1c5d7eead0561ba5407ace00805a6144f51
Reviewed-on: https://go-review.googlesource.com/c/go/+/646777
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
According to the MIPS ABI, R26/R27 are reserved for OS kernel, and may be clobbered by it. They must not be used by user mode.
See Figure 3-18 of MIPS ELF ABI specification: https://refspecs.linuxfoundation.org/elf/mipsabi.pdfFixes#73472
Change-Id: Ifda692a803176bfaab2c70d6623636c5d135f42e
Reviewed-on: https://go-review.googlesource.com/c/go/+/667816
Reviewed-by: Alan Donovan <adonovan@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Keep the property that the "devel" substring is always present in these
development versions of Go, but also gain the property that it's viable
to use functions in the go/version package such as Lang, Compare, and
get the expected results without needing to trim the "devel " prefix.
For #73369.
For #41116.
Fixes#73372.
Change-Id: Ieea4692e8c6cf0135e010f49f85300f6b038d6b1
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/668015
Reviewed-by: Funda Secgin <fundasecgin30@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
It's not currently possible to build cgo programs that are partially
compiled with gcc-15 on riscv64 using the internal linker. There are
two reasons for this.
1. When gcc-15 compiles _cgo_export.c, which contains no actual code,
for a riscv64 target, it emits a label in the .text section called
.Letext0. This label is referred to by another section, .debug_line,
and an entry is generated in the symbol table for it. The Go linker
panics when processing the .Letext0 symbol in _cgo_export.o, as it
occurs in an empty section.
2. GCC-15 is generating additional debug symbols with the .LVUS
prefix, e.g., .LVUS33, that need to be ignored.
We fix the issue by removing the check in
cmd/link/internal/loader/loader.go that panics if we encounter a
symbol in an empty section (the comments preceding this check suggest
it's safe to remove it) and by adding .LVUS to the list of symbol
prefixes to ignore.
Fixes#72840
Change-Id: I00658b6bdd01606dde1581b5bc2f42edfc37de82
Reviewed-on: https://go-review.googlesource.com/c/go/+/668276
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
These were the remaining instances in the main Go repo I found where a
Go version like "devel go1.25-9ce47e66e8 Wed Mar 26 03:48:50 2025 -0700"
is considered to be a development version rather than a release version,
but the version "go1.25-devel_9ce47e66e8 Wed Mar 26 03:48:50 2025 -0700"
is not.
Update this in preparation of the move of "devel" from front to middle.
For #73372.
For #73369.
Change-Id: If5442ecb0751c08b3a1b4d1148193e501700b956
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest
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NewFile recently added support for overlapped I/O on Windows,
which allows us to set deadlines on them, but the test coverage for
this new feature is not exhaustive.
Modify the existing pipe deadline tests to also exercise named
overlapped pipes.
Updates #19098.
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Change-Id: I86d284d9fb054c24959045a922cf84feeda5b5f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/668095
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
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Windows is unlike the other OSs and depends on a syscall for most
errors. This can be costly; cache the returned string for later reuse.
This helps test caching, since errors are written out as string to the
test ID, which are often PathErrors wrapping Errnos.
For now, only cache ERROR_FILE_NOT_FOUND and ERROR_PATH_NOT_FOUND.
goos: windows
goarch: amd64
pkg: syscall
cpu: Intel(R) Core(TM) i9-10900K CPU @ 3.70GHz
│ old.txt │ new.txt │
│ sec/op │ sec/op vs base │
ErrnoString-20 1788.00n ± 1% 11.08n ± 1% -99.38% (p=0.000 n=10)
│ old.txt │ new.txt │
│ B/op │ B/op vs base │
ErrnoString-20 48.00 ± 0% 0.00 ± 0% -100.00% (p=0.000 n=10)
│ old.txt │ new.txt │
│ allocs/op │ allocs/op vs base │
ErrnoString-20 1.000 ± 0% 0.000 ± 0% -100.00% (p=0.000 n=10)
For #72992
Change-Id: I9a0910fa6538772ffc64ef7670b44059a2c7d18c
Reviewed-on: https://go-review.googlesource.com/c/go/+/667495
Reviewed-by: Carlos Amedee <carlos@golang.org>
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Reviewed-by: Junyang Shao <shaojunyang@google.com>
Auto-Submit: Carlos Amedee <carlos@golang.org>
Change-Id: Ide372735165b7510fd8d7588451a37fa743e59c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/668915
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Reviewed-by: Carlos Amedee <carlos@golang.org>
Minor typo fixes in the docs
Change-Id: I56b5d0318936aecc7775fb5bc70534456707da49
GitHub-Last-Rev: b4d042f8a9
GitHub-Pull-Request: golang/go#73531
Reviewed-on: https://go-review.googlesource.com/c/go/+/668815
Reviewed-by: Keith Randall <khr@golang.org>
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This bug was introduced in CL 648518.
Fixes#73518.
Change-Id: I4988dd0b636c6a6a48d2aa2e2ae868e43f69995a
Reviewed-on: https://go-review.googlesource.com/c/go/+/668475
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Reviewed-by: Keith Randall <khr@google.com>
This reframes the WaitGroup documentation with Go at its center and
Add/Done as more "advanced" features.
Updates #63796
Change-Id: I8101972626fdb00c6f7fb185b685227823d10db1
Reviewed-on: https://go-review.googlesource.com/c/go/+/662975
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In CL 656755, the readRandom function was modified
to read an integer from /dev/random.
However, on Plan 9, /dev/random can only return
a few hundred bits a second.
The issue is that readRandom is called by randinit,
which is called at the creation of Go processes.
Consequently, it lead the Go programs to be very
slow on Plan 9.
This change reverts the change done in CL 656755
to make the readRandom function always returning 0
on Plan 9.
Change-Id: Ibe1bf7e4c8cbc82998e4f5e1331f5e29a047c4fc
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Reviewed-by: Richard Miller <millerresearch@gmail.com>
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Non-release versions that are built from source without a VERSION file
specifying any particular version end up with a development version like
"devel go1.25-67e0681aef Thu Apr 24 12:17:27 2025 -0700". Right now
those versions are correctly determined to be non-release because they
don't have a "go" prefix, instead they have a "devel " prefix.
In preparation of being able to move the "devel" substring, add a check
that said substring isn't present anywhere, since it is certain not to
be included in any released Go version we publish at https://go.dev/dl/.
For #73372.
Change-Id: Ia3e0d03b5723d4034d6270c3a2224f8dfae380e9
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We currently make some parts of the preamble unpreemptible because
it confuses morestack. See comments in the code.
Instead, have morestack handle those weird cases so we can
remove unpreemptible marks from most places.
This CL makes user functions preemptible everywhere if they have no
write barriers (at least, on x86). In cmd/go the fraction of functions
that need preemptible markings drops from 82% to 36%. Makes the cmd/go
binary 0.3% smaller.
Update #35470
Change-Id: Ic83d5eabfd0f6d239a92e65684bcce7e67ff30bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/648518
Auto-Submit: Keith Randall <khr@google.com>
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On loong64, BFPT and BFPF are mapped to the platform assembly as follows:
Go asm syntax:
BFPT FCCx, offs21
BFPF FCCx, offs21
Equivalent platform assembler syntax:
bcnez cj, offs21
bceqz cj, offs21
If the condition register is not specified, it defaults to FCC0.
Change-Id: I2cc3df62a9c55d4b5eb124789358983c6737319c
Reviewed-on: https://go-review.googlesource.com/c/go/+/667456
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Mark Freeman
Damien Neil
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tdakkota
Keith Randall
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qmuntal
Russ Cox
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Dmitri Shuralyov
Joel Sing
Josh Rickmar
Alan Donovan
Julian Zhu
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Sean Liao
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John Bampton
Guoqi Chen
goto1134
Julien Cretel
Austin Clements
David du Colombier
limeidan