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58084 Commits

Author SHA1 Message Date
Bryan C. Mills
09300d89e9 net/http: synchronize tests that use reqNum counters
This suppresses the race reported in #62638.

I am not 100% certain how that race happens, but here is my theory.
The increment of reqNum happens before the server writes the response
headers, and the server necessarily writes the headers before the
client receives them. However, that write/read pair occurs through I/O
syscalls rather than Go synchronization primitives, so it doesn't
necessarily create a “happens before” relationship as defined by the
Go memory model: although we can establish a sequence of events, that
sequence is not visible to the race detector, nor to the compiler.

Fixes #62638.

Change-Id: I90d66ec3fc32b9b8e1f9bbf0bc2eb289b964b99b
Reviewed-on: https://go-review.googlesource.com/c/go/+/528475
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
2023-09-14 17:45:18 +00:00
Chris Duncan
65c53a1833 log/slog: fix Record.back slice always too small during Add()
When slog.Record.Add(args) is called, with enough args to cause the
Record.back []Attr to be created, it is being created 1 too small, which
results in it immediately being grown again by append before the function
exits (needless allocation and copying).
This is because it is created with a capacity equal to countAttrs(args),
but forgets that there is an additional attribute to be appended: a
(args is just the remaining unconsumed attributes).
This PR fixes that by adding 1 to the capacity to account for the `a` attribute.

Additionally, when Record.back already exists, it will most likely be at
max capacity already. Rather than append to it and risk having it grown
multiple times, or grow too large, this adds a slices.Grow call to set it
to the right capacity, similar to what is already done in the
Record.AddAttrs(attrs) function.

Change-Id: Ic4bcf45909fe4436c586ccd2b8d61f24606b6be8
GitHub-Last-Rev: 4c924b610a
GitHub-Pull-Request: golang/go#62388
Reviewed-on: https://go-review.googlesource.com/c/go/+/524618
Reviewed-by: Jonathan Amsterdam <jba@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2023-09-14 17:38:25 +00:00
limeidan
ed26e2fe34 cmd/link/internal/loadelf: correct the relocation size of R_LARCH_64
Change-Id: If3eaca8b92e8f5265c7763d13021a6353b9df9b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/528455
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
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2023-09-14 17:34:12 +00:00
Tobias Klauser
630fff76f9 syscall: remove unused ptracePtr on openbsd
ptracePtr was introduced in CL 470299 for openbsd but it's not used on
this platform.

For #58387

Change-Id: I27901c3f4497e18dc407a9248b66e2691c9a6abb
Reviewed-on: https://go-review.googlesource.com/c/go/+/527535
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Reviewed-by: Ian Lance Taylor <iant@google.com>
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2023-09-14 17:26:57 +00:00
Jes Cok
0256198129 regexp: use built-in clear to clear b.visited in *bitState.reset
Change-Id: I1a723124f7050aeb971377db8c3cd04ebf9f7a16
GitHub-Last-Rev: 465da88feb
GitHub-Pull-Request: golang/go#62611
Reviewed-on: https://go-review.googlesource.com/c/go/+/527975
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2023-09-14 17:25:39 +00:00
Matthew Dempsky
a03f1aeb55 cmd/compile/internal/ir: remove Func.ReflectMethod
This flag doesn't serve any purpose anymore. The only place that it's
currently set happens after it's checked.

Change-Id: Idb6455416f68e502e0b0b1d80e2d6bb5956ee45b
Reviewed-on: https://go-review.googlesource.com/c/go/+/528435
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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2023-09-14 13:23:21 +00:00
Matthew Dempsky
d2e2da83b1 cmd/compile: move remaining instrumentation logic into ssagen
Allows removing Func.{Enter,Exit}, which were only ever used to hold
at most one function call each.

Change-Id: I8b629c82e90bac3fcbe54db89900492406c7dca6
Reviewed-on: https://go-review.googlesource.com/c/go/+/528319
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2023-09-14 13:21:53 +00:00
Bryan C. Mills
9ee23e97a2 cmd/cgo/internal/testcshared: remove an arbitrary timeout in TestSignalHandlersWithNotify
Also log verbose information when -test.v is set.

We need an arbitrary delay when checking that a signal is *not*
delivered, but when we expect the signal to arrive we don't need to
set an arbitrary limit on how long that can take.

Fixes #61264.

Change-Id: If3bbbf78e3c22694bf825d90d7ee9564ce8daedd
Reviewed-on: https://go-review.googlesource.com/c/go/+/509636
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2023-09-14 13:19:50 +00:00
Matthew Dempsky
a55ef98239 cmd/compile/internal/noder: drop unused *types.Pkg results
Several methods return a (*types.Pkg, *types.Sym) pair instead of just
a *types.Sym, because we used to need to preserve the *types.Pkg for
certain types so that we could write out export data for go/types to
use (which exposes these through its APIs).

But now that we write export data from the types2 representation
directly, there's no need for the rest of the compiler to be
concerned about that.

Change-Id: I6ac81a6db71b8e0795ff2f33399b839871564eb7
Reviewed-on: https://go-review.googlesource.com/c/go/+/528416
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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2023-09-14 13:17:26 +00:00
Matthew Dempsky
d18e9407b0 cmd/compile/internal/ir: add Func.DeclareParams
There's several copies of this function. We only need one.

While here, normalize so that we always declare parameters, and always
use the names ~pNN for params and ~rNN for results.

Change-Id: I49e90d3fd1820f3c07936227ed5cfefd75d49a1c
Reviewed-on: https://go-review.googlesource.com/c/go/+/528415
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2023-09-14 13:15:50 +00:00
qmuntal
de4ead8102 time: unconditionally use RegLoadMUIString on Windows
RegLoadMUIString is supported on Windows Vista and later, so this
should be safe to do unconditionally.

While here, also unconditionally use GetDynamicTimeZoneInformation
in syscall/windows/registry tests, since it's also supported on Windows
Vista and later.

Change-Id: Ifa32a81f4727d4810f2b9ccc814aa77a43513e59
Reviewed-on: https://go-review.googlesource.com/c/go/+/527595
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2023-09-14 07:20:34 +00:00
Matthew Dempsky
856cf23a8a spec: specify evaluation order for binary logical operations
This CL clarifies the order of evaluation of the binary logical
operators, && and ||. The clarified semantics matches what cmd/compile
and x/tools/go/ssa already implement, and prohibit some optimizations
that are arguably allowed today but risk surprising users.

First, it specifies that the left operand is evaluated before the
right operand. This prohibits "(f() || true) && *p" from evaluating
"*p" before "f()".

Second, it specifies that binary logical operations are also ordered
lexically left-to-right with regard to function calls and receive
operations. This prohibits "h(*p || true || f(), g())" from evaluating
"*p" after "g()".

Finally, the "order of evaluation of [...] is not specified" wording
in the example is clarified to acknowledge that there are still some
other orderings that are implied lexically; e.g., x must be evaluated
and indexed before g(), and z now must be evaluated before h(). (Note:
Whether z is evaluated before or after f() remains unspecified, as
there's no lexical dependency.)

Change-Id: I9d316a7f1fbc83be663e116380a2cc7a4ace623d
Reviewed-on: https://go-review.googlesource.com/c/go/+/522938
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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2023-09-14 05:14:44 +00:00
Jonathan Amsterdam
495830acd6 net/http: implement path value methods on Request
Add Request.PathValue and Request.SetPathValue,
and the fields on Request required to support them.

Populate those fields in ServeMux.ServeHTTP.

Updates #61410.

Change-Id: Ic88cb865b0d865a30d3b35ece8e0382c58ef67d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/528355
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
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2023-09-14 00:00:28 +00:00
Ian Lance Taylor
fccd0b9b70 context: support non-standard Context in Cause
If Cause is called on a non-standard Context, call ctx.Err.

Fixes #62582

Change-Id: Iac4ed93203eb5529f8839eb479b6ee2ee5ff6cbc
Reviewed-on: https://go-review.googlesource.com/c/go/+/527277
Reviewed-by: Bryan Mills <bcmills@google.com>
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2023-09-13 23:32:41 +00:00
Jonathan Amsterdam
399b2a4b1b net/http: give ServeMux.handler a better name
Change-Id: I27bb7d9d5f172a84aa31304194b8a13036b9c5d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/528275
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2023-09-13 21:00:43 +00:00
Jonathan Amsterdam
e277455164 net/http: add test for registration errors
Change-Id: Ice378e2f1c4cce180f020683d25070c5ae1edbad
Reviewed-on: https://go-review.googlesource.com/c/go/+/528255
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
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2023-09-13 21:00:34 +00:00
Bryan C. Mills
6760f20ef5 net/http: scale rstAvoidanceDelay to reduce test flakiness
As far as I can tell, some flakiness is unavoidable in tests
that race a large client request write against a server's response
when the server doesn't read the full request.
It does not appear to be possible to simultaneously ensure that
well-behaved clients see EOF instead of ECONNRESET and also prevent
misbehaving clients from consuming arbitrary server resources.
(See RFC 7230 §6.6 for more detail.)

Since there doesn't appear to be a way to cleanly eliminate
this source of flakiness, we can instead work around it:
we can allow the test to adjust the hard-coded delay if it
sees a plausibly-related failure, so that the test can retry
with a longer delay.

As a nice side benefit, this also allows the tests to run more quickly
in the typical case: since the test will retry in case of spurious
failures, we can start with an aggressively short delay, and only back
off to a longer one if it is really needed on the specific machine
running the test.

Fixes #57084.
Fixes #51104.
For #58398.

Change-Id: Ia4050679f0777e5eeba7670307a77d93cfce856f
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest-race,gotip-linux-amd64-race,gotip-windows-amd64-race
Reviewed-on: https://go-review.googlesource.com/c/go/+/527196
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2023-09-13 20:57:25 +00:00
Jonathan Amsterdam
545e4f38e0 net/http: ServeMux handles extended patterns
Modify ServeMux to handle patterns with methods and wildcards.

Remove the map and list of patterns. Instead patterns
are registered and matched using a routing tree.

We also reorganize the code around "trailing-slash redirection,"
the feature whereby a trailing slash is added to a path
if it doesn't match an existing one. The existing code
checked the map of paths twice, but searching the tree
twice would be needlessly expensive. The rewrite
searches the tree once, and then again only if a
trailing-slash redirection is possible.

There are a few omitted features in this CL, indicated
with TODOs.

Change-Id: Ifaef59f6c8c7b7131dc4a5d0f101cc22887bdc74
Reviewed-on: https://go-review.googlesource.com/c/go/+/528039
Run-TryBot: Jonathan Amsterdam <jba@google.com>
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2023-09-13 20:07:22 +00:00
Bryan C. Mills
f7f266c885 os/exec: avoid calling LookPath in cmd.Start for resolved paths
This reapplies CL 512155, which was previously reverted in CL 527337.
The race that prompted the revert should be fixed by CL 527820,
which will be submitted before this one.

For #36768.
Updates #62596.

Change-Id: I3c3cd92470254072901b6ef91c0ac52c8071e0a2
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-race,gotip-windows-amd64-race,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/528038
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2023-09-13 19:38:12 +00:00
Bryan C. Mills
07d4de9312 os/exec: fix edge cases in Windows PATH resolution
- Ignore empty entries in PATH, like PowerShell does.

- If we resolve a path using an explicit relative entry in PATH,
  treat it the same as we do for the implicit "." search path,
  by allowing a later (absolute) PATH entry that resolves to the
  same executable to return the absolute version of its path.

- If the requested path does not end with an extension matching
  PATHEXT, return ErrNotFound (indicating that we potentially searched
  for multiple alternatives and did not find one) instead of
  ErrNotExist (which would imply that we know the exact intended path
  but couldn't find it).

Fixes #61493.

Change-Id: I5b539d8616e3403825749d8eccf46725fa808a17
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-race,gotip-windows-amd64-race,gotip-windows-amd64-longtest
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2023-09-13 19:38:10 +00:00
Cherry Mui
d66fc90a0d cmd/link: round up default start address to alignment
If the -R flag (the segment alignment) is specified but the -T
flag (start address) is not, currently the default start address
may be under-aligned, and some math in the linker may be broken.
Round up the start address to align it.

Fixes #62064.

Change-Id: I3b98c9d0cf7d3cd944b9436a36808899d2e52572
Reviewed-on: https://go-review.googlesource.com/c/go/+/527822
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2023-09-13 19:32:19 +00:00
Michael Pratt
da13da1fce cmd/compile/internal/pgo: remove stale comment
targetDeclFuncs was removed before CL 492436 was ever merged.

Change-Id: I1aafc28446ad23f63bcafc144b91f924dacd676e
Reviewed-on: https://go-review.googlesource.com/c/go/+/528176
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Auto-Submit: Michael Pratt <mpratt@google.com>
2023-09-13 19:30:06 +00:00
Bryan C. Mills
36facaa1f9 os/exec: avoid writing to Cmd.Path in Cmd.Start on Windows
Fixes #62596.

Change-Id: I9003318ac1c4e3036f32383e62e9ba08c383d5c2
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-race,gotip-windows-amd64-race,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/527820
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Auto-Submit: Bryan Mills <bcmills@google.com>
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2023-09-13 19:25:41 +00:00
Mauri de Souza Meneguzzo
6ecd5f7504 runtime/internal/atomic: add wasm And/Or operators
In the WebAssembly version of these operators we avoid using
a CAS loop since the Go wasm implementation is single-threaded.

A new test file has been added that has build tags in order to
only test this feature on implemented architectures.

This is part of a series of CLs aimed to add the primitives
for And/Or atomic operations that will be used by the public
sync/atomic apis.

For #61395

Change-Id: Ic67ffefc9cfb626915ea86b6b21b500117710327
GitHub-Last-Rev: bbec3a5f35
GitHub-Pull-Request: golang/go#62517
Reviewed-on: https://go-review.googlesource.com/c/go/+/526656
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2023-09-13 18:36:37 +00:00
doujiang24
bfa8a8586f runtime: silently allow pinning of non-Go pointers in runtime.Pinner.Pin
People may not know the details of a pointer, this makes the
runtime.Pinner.Pin API easier to use.

Fixes #62356

Change-Id: I071df44e01320648a6df5e2a1e65afd6ea52e274
GitHub-Last-Rev: 560a581b63
GitHub-Pull-Request: golang/go#62549
Reviewed-on: https://go-review.googlesource.com/c/go/+/527156
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2023-09-13 18:36:12 +00:00
Li Gang
b45b00162b runtime: resolve false sharing for frequent memory allocate workloads
False sharing observed inside mheap struct, between arenas and preceding
variables.Pad mheap.arenas and preceding variables to avoid false sharing

This false-sharing getting worse and impact performance on multi core
system and frequent memory allocate workloads. While running MinIO On a
2 socket system(56 Core per socket) and GOGC=1000, we observed HITM>8%
(perf c2c) on this cacheline.

After resolve this false-sharing issue, we got performance 17% improved.

Improvement verified on MinIO:
Server: https://github.com/minio/minio
Client: https://github.com/minio/warp
Config: Single node MinIO Server with 6 ramdisk, without TLS enabled,
        Run warp GET request, 128KB object and 512 concurrent

Fixes #62472

Signed-off-by: Li Gang<gang.g.li@intel.com>
Change-Id: I9a4a3c97f5bc8cd014c627f92d59d9187ebaaab5
Reviewed-on: https://go-review.googlesource.com/c/go/+/525955
Reviewed-by: Heschi Kreinick <heschi@google.com>
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2023-09-13 18:36:09 +00:00
Abhinav Gupta
794e7ea15b net/http: use new Go Doc list syntax
This tweaks the documentation for http.Client
to use the list syntax introduced in Go 1.19.

Change-Id: I1f7e0256c13f57e04fc76e5e2362608c8f9f524d
GitHub-Last-Rev: 11d384f9ad
GitHub-Pull-Request: golang/go#62574
Reviewed-on: https://go-review.googlesource.com/c/go/+/527335
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2023-09-13 18:35:12 +00:00
Tobias Klauser
2c74018d7b path: use bytealg.LastIndexByteString
While strings.LastIndex{,Byte} cannot be used in package path, the
respective internal/bytealg function can be used.

Change-Id: If0ecc36484308221f50875c8609913f6f2887fba
Reviewed-on: https://go-review.googlesource.com/c/go/+/527855
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2023-09-13 18:34:40 +00:00
Alexander Yastrebov
3e1db32657 internal/zstd: fix window resizing
Incorrect window resizing led to checksum error and invalid result.
To demonstrate the problem bigData must be a bit bigger, 3x is enough.

This change fixes window resizing, increases bigData size and decouples
TestLargeXXHash from bigData because it uses hardcoded hash value.

Change-Id: I50f74315b083f42e1ccd7ab2093e084f44631bb6
GitHub-Last-Rev: dbc90ba7a5
GitHub-Pull-Request: golang/go#62543
Reviewed-on: https://go-review.googlesource.com/c/go/+/527115
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2023-09-13 18:34:35 +00:00
Matthew Dempsky
dc0d126e37 cmd/compile/internal/abi: replace types.Object with *ir.Name
types.Object only exists to avoid a circular dependency between
package types and ir.

Change-Id: I35196aff765d6977ca1e69fe482edbc987c381c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/527340
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2023-09-13 18:34:03 +00:00
Matthew Dempsky
c0e2a9dffd cmd/compile/internal/abi: use Type.Registers
Now that types can self-report how many registers they need, it's much
easier to determine whether a parameter will fit into the available
registers: simply compare the number of registers needed against the
number of registers still available.

This also eliminates the need for the NumParamRegs cache.

Also, the new code in NumParamRegs is stricter in only allowing it to
be called on types that can actually be passed in registers, which
requires a test to be corrected for that. While here, change mkstruct
to a variadic function, so the call sites require less boilerplate.

Change-Id: Iebe1a0456a8053a10e551e5da796014e5b1b695b
Reviewed-on: https://go-review.googlesource.com/c/go/+/527339
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2023-09-13 18:34:00 +00:00
Matthew Dempsky
c80a9f172b cmd/compile/internal/types: add Type.Registers
To be used by package abi in the following CL.

Change-Id: Ic2470069e65f8d9b01ec161c28e5b86dca2ec141
Reviewed-on: https://go-review.googlesource.com/c/go/+/527338
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-09-13 18:33:58 +00:00
Tobias Klauser
65c407b405 syscall: use SYS_SETRLIMIT in //sysnb setrlimit1 on linux/arm64
Otherwise the setrlimit1 wrapper would be generated using the inexistent
SYS_GETRLIMIT1 syscall number.

This was likely missed in CL 476097.

For #476097

Change-Id: I5cfa2ebacb58aeeaddd3db3639a45cf368fbe0ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/527555
Reviewed-by: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-09-13 18:29:13 +00:00
Bryan C. Mills
105f9d5169 os/exec: simplify Windows-specific tests
- Use the test binary itself for printing paths instead of building a
  separate binary and running it through additional subprocesses.

- Factor out a common chdir helper.

- Use t.Setenv where appropriate.

- Reduce indirection in test helpers.

- Set NoDefaultCurrentDirectoryInExePath consistently in the
  environment.

Also add a test case demonstrating an interesting behavior for
relative paths that may interact with #62596.

Fixes #62594.
For #62596.

Change-Id: I19b9325034edf78cd0ca747594476cd7432bb451
Reviewed-on: https://go-review.googlesource.com/c/go/+/528035
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
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2023-09-13 18:19:21 +00:00
Tobias Klauser
dd2279ee34 testing: use strings.LastIndexAny in (*common).decorate
Change-Id: I14c521f4e599e14c71a52342b0ead5d0d4007f1e
Reviewed-on: https://go-review.googlesource.com/c/go/+/527655
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Kirill Kolyshkin <kolyshkin@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-09-13 18:06:09 +00:00
Than McIntosh
3251006291 cmd/link: fix malformed .shstrtab section
For ELF targets, the code in the go linker that generates the
".shstrtab" section was using a loader symbol to accumulate the
contents of the section, then setting the section type to
sym.SELFROSECT. This resulted in a section whose offset indicated that
it fell into a loadable ELF segment, which is not how the .shstrtab is
supposed to work (it should be outside of all loadable segments,
similar to .strtab and .symtab). The peculiar .shstrtab caused
confusion in third party tools that operate on ELF files, notably
llvm-strip.

This patch rewrites the .shstrtab generation code to avoid using a
loader.Symbol and instead accumulate the contents of the section into
a regular byte slice, then emit the section's data in the same way
that .strtab is handled.

Fixes #62600.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Change-Id: Ie54020d7b2d779d3ac9f5465fd505217d0681f79
Reviewed-on: https://go-review.googlesource.com/c/go/+/528036
Reviewed-by: Cherry Mui <cherryyz@google.com>
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2023-09-13 16:29:40 +00:00
qiulaidongfeng
584aad5c57 go/doc/comment: use slices.BinarySearch
Change-Id: Ifb28dd08faa59d9186a4a2337aab0c536d9a885e

Change-Id: Ifb28dd08faa59d9186a4a2337aab0c536d9a885e
GitHub-Last-Rev: dba95de0fb
GitHub-Pull-Request: golang/go#62610
Reviewed-on: https://go-review.googlesource.com/c/go/+/527956
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2023-09-13 15:48:13 +00:00
Mauri de Souza Meneguzzo
e5600f063d archive/tar: add AddFS method to Writer
The method AddFS can be used to add the contents of a fs.FS filesystem
to a tar archive. This method walks the directory tree starting at the root
of the filesystem and adds each file to the archive.

Fixes #58000

Change-Id: I0e6abac76b76bc5d95b74b7e5b37634ce3f76c85
GitHub-Last-Rev: 11a62bfd7e
GitHub-Pull-Request: golang/go#61599
Reviewed-on: https://go-review.googlesource.com/c/go/+/513316
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2023-09-13 13:59:01 +00:00
Jes Cok
0460c61e5f go/doc/comment: update TODO for isStdPkg
Even better is slices.BinarySearch, leave a TODO to update to that when possible.

Change-Id: Ie1ec75c34c0329c536725b45e520693790f0520e
GitHub-Last-Rev: 6cd811b186
GitHub-Pull-Request: golang/go#62585
Reviewed-on: https://go-review.googlesource.com/c/go/+/527341
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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2023-09-13 00:59:13 +00:00
Yi Yang
4ee1d542ed cmd/compile: sparse conditional constant propagation
sparse conditional constant propagation can discover optimization
opportunities that cannot be found by just combining constant folding
and constant propagation and dead code elimination separately.

This is a re-submit of PR#59575, which fix a broken dominance relationship caught by ssacheck

Updates https://github.com/golang/go/issues/59399

Change-Id: I57482dee38f8e80a610aed4f64295e60c38b7a47
GitHub-Last-Rev: 830016f24e
GitHub-Pull-Request: golang/go#60469
Reviewed-on: https://go-review.googlesource.com/c/go/+/498795
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Reviewed-by: Keith Randall <khr@golang.org>
2023-09-12 21:01:50 +00:00
Michael Pratt
a843991fdd runtime: set _XOPEN_SORUCE_EXTENDED to 1 for aix
aix requires that _XOPEN_SOURCE_EXTENDED is set to a number, not simply
defined.

For #62440.

Change-Id: Iee221d558b5ad5b8dcb874d4d9fdf94593f7d0a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/527797
TryBot-Result: Gopher Robot <gobot@golang.org>
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2023-09-12 20:41:08 +00:00
thepudds
bc1d71ff64 cmd/compile: add a 'Tips' section to README to help new contributors
This CL adds a new 'Tips' section to the cmd/compile README.

The primary intent is to help new-ish contributors.

It includes some basics on getting started, testing changes,
viewing coverage, juggling different compiler versions,
some links to additional tools, and so on.

Updates #30074

Change-Id: I393bf1137db9d2bb851f7e254b08455273ccad8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/503895
TryBot-Result: Gopher Robot <gobot@golang.org>
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Reviewed-by: Keith Randall <khr@google.com>
2023-09-12 20:35:02 +00:00
mstmdev
5f04ef752b io/fs, path/filepath, cmd/gofmt: replace statDirEntry with fs.FileInfoToDirEntry
Change-Id: Ie914367314ca72fab34c4d4529755dea853cf325
GitHub-Last-Rev: bc61665d33
GitHub-Pull-Request: golang/go#62342
Reviewed-on: https://go-review.googlesource.com/c/go/+/523876
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
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2023-09-12 20:27:28 +00:00
Kir Kolyshkin
2be7b1a4ac os: fix TestRenameCaseDifference
Saw this failing on windows like this:

	--- FAIL: TestRenameCaseDifference (2.96s)
	--- FAIL: TestRenameCaseDifference/dir (1.64s)
	    testing.go:1226: TempDir RemoveAll cleanup: remove C:\Users\gopher\AppData\Local\Temp\1\TestRenameCaseDifferencedir1375918868\001: The process cannot access the file because it is being used by another process.
	--- FAIL: TestRenameCaseDifference/file (1.32s)
	    testing.go:1226: TempDir RemoveAll cleanup: remove C:\Users\gopher\AppData\Local\Temp\1\TestRenameCaseDifferencefile3272269402\001: The process cannot access the file because it is being used by another process.
	FAIL

The reason might be the directory fd is not closed. This may be
mitigated by retries in removeAll function from testing package,
but apparently it does not succeed all the time.

A link to the failed run which made me look into this: https://ci.chromium.org/ui/p/golang/builders/try/gotip-windows-386/b8770439049015378129/overview

Change-Id: Ibebe94958d1aef8d1d0eca8a969675708cd27a7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/527175
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2023-09-12 20:24:06 +00:00
Jes Cok
ca102e5c4a all: calculate the median uniformly
This is a follow up of CL 526496.

Change-Id: I9f351951bf975e31befd36b9c951d195d2f8f9f7
GitHub-Last-Rev: 4307adafbf
GitHub-Pull-Request: golang/go#62590
Reviewed-on: https://go-review.googlesource.com/c/go/+/527576
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Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-09-12 20:16:26 +00:00
Jonathan Amsterdam
d8b349ea60 net/http: routing tree
This CL implements a decision tree for efficient routing.
The tree holds all the registered patterns. To match
a request, we walk the tree looking for a match.

Change-Id: I7ed1cdf585fc95b73ef5ca2f942f278100a90583
Reviewed-on: https://go-review.googlesource.com/c/go/+/527315
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2023-09-12 19:33:35 +00:00
Matthew Dempsky
c8396b5188 cmd/compile/internal/ir: add NewZero
This constructs a zero value of any type, which helps address some
corner case scenarios.

It should also eventually handle the predeclared "zero" value, at
least as currently implemented in go.dev/cl/520336.

For #61372.

Change-Id: I3a86a94fd8fa388c9c6bf281da8aa532b3da00fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/527696
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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2023-09-12 18:53:26 +00:00
Matthew Dempsky
661e3be497 cmd/compile/internal/dwarfgen: remove unversion
The unified export data format doesn't rely on embedding version
numbers in local variable names anymore, so there's no need to look
for them.

While here, simplify the checking for "~r" or "~b" to just "~",
because the next commit is going to eliminate "~b", but introduce
"~p".

Change-Id: I3ac73150ee561c66356a0c4aee5290b44a4893ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/527695
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2023-09-12 18:52:49 +00:00
Michael Pratt
4b17b36b3f cmd/compile/internal/devirtualize: sort equal weight CallStat.Hottest by name
When two callees have equal weight, we need to sort by another criteria
to ensure that we get stable output.

Note that this is only for the CallStat debug JSON output. The actual
callee selection already does this secondary sort in
findHotConcreteCallee.

Change-Id: I0de105623c5ccc793ca6f5799ea25e57bc286722
Reviewed-on: https://go-review.googlesource.com/c/go/+/527796
Auto-Submit: Michael Pratt <mpratt@google.com>
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2023-09-12 18:40:16 +00:00
Michael Pratt
e8ba0579e2 runtime: set _XOPEN_SOURCE_EXTENDED for netbsd
If _XOPEN_SOURCE is defined, then netbsd also requires
_XOPEN_SOURCE_EXTENDED to define stack_t.

For #62440.

Change-Id: Ib05658c3ca7fae1f6b051566e713ce7bc7c037a0
Reviewed-on: https://go-review.googlesource.com/c/go/+/527775
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2023-09-12 18:26:38 +00:00