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60352 Commits

Author SHA1 Message Date
Than McIntosh
ca5ba146da cmd/compile/internal: add a PGO devirt post-lookup cleanup hook
The PGO-based devirtualization helper pgoir.addIndirectEdges makes a
series of calls into the unified IR reader to import functions that
would not normally be imported but may be the target of a hot indirect
call from the current package. This importing primarily targets at
non-generic functions and methods, but as part of the process we can
encounter types that have methods (including generic methods) whose
bodies need to be read in. When the reader encounters an inlinable
func of this sort, it may (depending on the context) decide not to
read the body right away, but instead adds the func to a list
("todoBodies") to be read in later on in a more convenient context.

In the bug in question, a hot method lookup takes place in
pgoir.addIndirectEdges, and as part of the import process we wind up
with a type T with method M that is in this partially created state,
and in addition T gets added to the unified IR's list of types that
may need method wrappers. During wrapper generation we create a new
wrapper "(*T).M" whose body has a call to "T.M", then farther on down
the pike during escape analysis we try to analyze the two functions;
this causes a crash due to "T.M" being in partially constructed state.

As a fix, add a new "PostLookupCleanup" hook (in the unified IR
reader) that pgoir.addIndirectEdges can invoke that takes care of
reading in the bodies of any functions that have been added to the
"todoBodies" list.

[Note: creating a test case for this problem is proving to be very
tricky; a new test will be added in a subsequent patch].

Fixes #67746.

Change-Id: Ibc47ee79e08a55421728d35341df80a865231cff
Reviewed-on: https://go-review.googlesource.com/c/go/+/591075
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-06-12 20:40:04 +00:00
Dmitri Shuralyov
97bc577812 doc/next: improve description of proposal 61308
For #61308.
For #65614.

Change-Id: I36b4f2392075d5a3fb9f53a28bd19b997e7be363
Reviewed-on: https://go-review.googlesource.com/c/go/+/592197
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Bypass: Dmitri Shuralyov <dmitshur@golang.org>
2024-06-12 18:56:34 +00:00
Cherry Mui
3622ad9705 doc/next: reword map iterator function notes
The notes don't define identifiers m and seq. Describe in words
instead.

While here, rename 3-structs.md to 4-structs.md.

For #65614.

Change-Id: I6690f552903d1870c70e28673c87ac84b7c5c041
Reviewed-on: https://go-review.googlesource.com/c/go/+/592195
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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2024-06-12 18:30:46 +00:00
Ian Lance Taylor
ee4a42bd58 net: add GODEBUG=netedns0=0 to disable sending EDNS0 header
It reportedly breaks the DNS server on some modems.

For #6464
For #21160
For #44135
For #51127
For #51153
Fixes #67925

Change-Id: I54a11906159f00246d08a54cc8be7327e9ebfd2c
Reviewed-on: https://go-review.googlesource.com/c/go/+/591995
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-06-12 17:31:13 +00:00
Cherry Mui
b589478af7 cmd/link: put runtime.end in the last section of data segment
Currently the runtime.end symbol is put into the noptrbss section,
which is usually the last section, except that when fuzzing is
enabled, the last section is actually .go.fuzzcntrs. The
runtime.end symbol has the value pointing to the end of the data
segment, so if it is not in the last section, the value will not
actually be in the range of the section. This causes an assertion
failure in the new Apple linker. This CL fixes this by putting it
in the last section.

Fixes #65169.

Change-Id: I5c991c46a0483a96e5f6e0255a3b444953676026
Reviewed-on: https://go-review.googlesource.com/c/go/+/592095
Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-06-12 15:10:50 +00:00
Michael Pratt
b788e91bad os: always return syscall.ECHILD from Wait for done process
For processes that don't exist at lookup time, CL 570036 and CL 588675
make Wait return unconditionally return ErrProcessDone when using pidfd,
rather than attempting to make a wait system call.

This is consistent with Signal/Kill, but inconsistent with the previous
behavior of Wait, which would pass through the kernel error,
syscall.ECHILD.

Switch the ErrProcessDone case to return syscall.ECHILD instead for
consistency with previous behavior.

That said, I do think a future release should consider changing ECHILD
to ErrProcessDone in all cases (including when making an actual wait
system call) for better consistency with Signal/Kill/FindProcess.

Fixes #67926.

Cq-Include-Trybots: luci.golang.try:gotip-darwin-amd64_14,gotip-solaris-amd64,gotip-openbsd-amd64
Change-Id: I1f688a5751d0f3aecea99c3a5b35c7894cfc2beb
Reviewed-on: https://go-review.googlesource.com/c/go/+/591816
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2024-06-11 18:08:44 +00:00
Clide Stefani
4b8f80707f crypto/tls: improve error log produced during TestBogoSuite
The existing implementation logs some errors to the results file created in TestBogoSuite.
This change would additionally log json errors to the results file.

Change-Id: Ib1a6f612ed83f6c5046531ee259c4e85dd71402a
Reviewed-on: https://go-review.googlesource.com/c/go/+/591379
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
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2024-06-11 17:25:39 +00:00
Cherry Mui
04b5d13256 doc/next: document GORISCV64 environment variable
For #65614.
Updates #61476.

Change-Id: Id677aa6d2a59366ab75a26f08a383d2d253f270e
Reviewed-on: https://go-review.googlesource.com/c/go/+/591895
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2024-06-11 17:18:52 +00:00
Cherry Mui
1554e87c19 doc/next: document GOARM64 environment variable
For #65614.
Updates #60905.

Change-Id: I2dd9df3c7066357cf06268d918bad3c255b38aed
Reviewed-on: https://go-review.googlesource.com/c/go/+/591875
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2024-06-11 17:18:41 +00:00
Cherry Mui
816538d517 doc/next: document locking down linkname usages
For #65614.
Updates #67401.

Change-Id: Ib38c134ea7ffc69434c79600ba75185e02809d0f
Reviewed-on: https://go-review.googlesource.com/c/go/+/591898
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Reviewed-by: Than McIntosh <thanm@google.com>
2024-06-11 17:18:10 +00:00
Jes Cok
35d721b0cb time: correct spelling, queing -> queuing
Change-Id: I418953a766db22b134a9569161f06cf8682c1eef
Reviewed-on: https://go-review.googlesource.com/c/go/+/591336
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-06-11 17:10:37 +00:00
Dana Burkart
b3a57e43c7 time: add to format documentation about dangers of using RFC1123{,Z} for parsing
When using time.RFC1123Z to parse the date header value out of an email,
an error is returned for dates that occur in the first 9 days of a
month. This is because the format strings for RFC 1123 defined in the
time package indicate that the day should be prefixed with a leading 0.

Reading the spec, the line that talks about it seems to indicate that
days can be either 1 or 2 digits:

  `date = 1*2DIGIT month 2*4DIGIT`

So a date header with a day like `7` with no leading zero should be
accepted.

Fixes #67887

Change-Id: Ie7ee40d94da2c8c0417957e8b89f9987314949c8
GitHub-Last-Rev: 22a5a52fcb
GitHub-Pull-Request: golang/go#67888
Reviewed-on: https://go-review.googlesource.com/c/go/+/591335
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2024-06-11 17:09:28 +00:00
Kir Kolyshkin
3b6aa03c12 os: RemoveAll: fix error returned
When unlink fails, it is not yet known if the argument is a directory or not.
Since CL 588495, we figure out if it's a directory when trying to open
it (and, for a directory, return the original unlink error).

The (very minor) issue is, in case of a symlink, a different error is
returned -- usually it's ELOOP, but some systems use other values. Let's
account for that error code, too.

This is a followup to CL 588495.

Change-Id: I4ee10fe9b57f045fbca02f13e5c9ea16972803bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/589376
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Kirill Kolyshkin <kolyshkin@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-06-11 17:09:26 +00:00
Ben Hoyt
aed1f925f2 os/user: make Lookup* functions properly handle ENOENT
The libc docs say that these functions can return ENOENT, and
per issue #67912, this does happen in practice sometimes. Handle
both the ENOENT and !found cases the same way, for Lookup,
LookupId, LookupGroup, LookupGroupId.

Fixes #67912

Change-Id: I993935af44c83ad785b6cd735fc313a3647daa19
Reviewed-on: https://go-review.googlesource.com/c/go/+/591555
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2024-06-11 17:08:14 +00:00
Cherry Mui
5d85004622 cmd/go: update link to RISC-V profile doc
The URL has changed.

Change-Id: I295020c59aaf64a89c4307fca527163095148a67
Reviewed-on: https://go-review.googlesource.com/c/go/+/591897
Reviewed-by: Joel Sing <joel@sing.id.au>
Reviewed-by: M Zhuo <mengzhuo1203@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
2024-06-11 16:54:28 +00:00
Cherry Mui
6165bb11d7 doc/next: resolve a TODO for openbsd/riscv64 port
I think we want to keep the "experimental" as we did before. Also
added "64-bit" to be more specific.

For #65614.

Change-Id: I928d0ba6f1b53efa1f882f81f68bfb2446c7ab42
Reviewed-on: https://go-review.googlesource.com/c/go/+/591896
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
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2024-06-11 16:54:08 +00:00
Cherry Mui
5d759ac902 doc/next: reword linker -bindnow release notes
For #65614.

Change-Id: I1a2a4bc18601526053840a280e0604a8e1028ce6
Reviewed-on: https://go-review.googlesource.com/c/go/+/591899
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Reviewed-by: Than McIntosh <thanm@google.com>
2024-06-11 16:47:18 +00:00
Robert Griesemer
0d478d8e07 go/types, types2: add missing Unalias calls in type unifier
The unification code has "early exits" when the compared
types are pointer-identical.

Because of Alias nodes, we cannot simply compare x == y but we
must compare Unalias(x) == Unalias(y). Still, in the common case
there are no aliases, so as a minor optimization we write:

        x == y || Unalias(x) == Unalias(y)

to test whether x and y are (pointer-) identical.
Add the missing Unalias calls in the place where we forgot them.

Fixes #67872.

Change-Id: Ia26ffe7205b0417fc698287a4aeb1c900d30cc0d
Reviewed-on: https://go-review.googlesource.com/c/go/+/591975
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
2024-06-11 16:24:39 +00:00
Michael Pratt
beaf7f3282 os: overhaul handling of PID vs pidfd within Process
There are several issues with pidfd handling today:

* The zero value of a Process makes the handle field appear valid, so
  methods attempt to use it as a pidfd rather than falling back to the
  PID as they should (#67634).

* If a process doesn't exist, FindProcess returns a Process with Pid ==
  -2, which is not a compatible change (#67640).

* pidfd close is racy as-is. A Release call or successful Wait will
  clear the handle field and close the pidfd. However, a concurrent call
  may have already loaded the handle field and could then proceed to use
  the closed FD (which could have been reopened as a different pidfd,
  targeting a different process) (#67641).

This CL performs multiple structural changes to the internals of
Process.

First and foremost, each method is refactored to clearly select either
pidfd or raw pid mode. Previously, raw pid mode was structured as a
fallback when pidfd mode is unavailable. This works fine, but it does
not make it clear that a given Process object either always uses pidfd
or always uses raw pid. Since each mode needs to handle different race
conditions, it helps to make it clear that we can't switch between modes
within a single Process object.

Second, pidfd close safety is handled by reference counting uses of the
FD. The last user of the FD will close the FD. For example, this means
that with concurrent Release and Signal, the Signal call may be the one
to close the FD. This is the bulk of this CL, though I find the end
result makes the overall implementation easier to reason about.

Third, the PID path handles a similar race condtion between Wait and
Kill: Wait frees the PID value in the kernel, which could be reallocated
causing Kill to target the wrong process. This is handled with a done
flag and a mutex. The done flag now shares the same state field used for
the handle.

Similarly, the Windows implementation reuses all of the handle reference
counting that Linux uses. This means the implementations more
consistent, and make Windows safe against the same handle reuse
problems. (Though I am unsure if Windows ever reuses handles).

Wait has a slight behavior change on Windows: previously Wait after
Release or an earlier Wait would hang indefinitely (WaitForSingleObject
on syscall.InvalidHandle waits indefinitely). Now it returns the same
errors as Linux (EINVAL and ErrProcessDone, respectively).

Similarly, Release on Windows no longer returns close errors, as it may
not actually be the place where the close occurs.

Fixes #67634.
Fixes #67640.
Fixes #67641.
Updates #67642.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Change-Id: I2ad998f7b67d32031e6f870e8533dbd55d3c3d10
Reviewed-on: https://go-review.googlesource.com/c/go/+/588675
Reviewed-by: Austin Clements <austin@google.com>
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2024-06-10 22:06:47 +00:00
Than McIntosh
a130fb6309 cmd/compile/internal/ssa: fix DWARF location expr for .closureptr
CL 586975 added support to the compiler back end to emit a synthetic
".closureptr" variable in range func bodies, plus code to spill the
incoming context pointer to that variable's location on the stack.

This patch fixes up the code in the back end that generates DWARF
location lists for incoming parameters (which sometimes arrive in
registers) in the "-l -N" no-optimization case to also create a
correct DWARF location list for ".closureptr", a two-piece list
reflecting the fact that its value arrives in a register and then is
spilled to the stack in the prolog.

Fixes #67918.

Change-Id: I029305b5248b8140253fdeb6821b877916fbb87a
Reviewed-on: https://go-review.googlesource.com/c/go/+/591595
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2024-06-10 19:44:43 +00:00
Robert Griesemer
4256ec1661 cmd/compile/internal/syntax: return correct start pos for KeyValueExprs
Fixes #67866.

Change-Id: Id9d345aab87e493b8ed94319c5acaa1900362648
Reviewed-on: https://go-review.googlesource.com/c/go/+/591695
Reviewed-by: Robert Griesemer <gri@google.com>
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2024-06-10 17:49:19 +00:00
Andrew W. Phillips
f515c1bac7 cmd/go/internal/work: avoid panic for a repeated //go:debug setting
The creation of a bytes.Buffer in one code path is missing causing a nil
pointer dereference.

Changed (as rec. by Bryan Mills) to use fmt.Appendf() on []byte instead of
fmt.Fprintf on *bytes.Buffer - simpler and avoids duplicated code (but
requires Go 1.19 or later).

Added test to verify the change (as rec. by Michael Matloob) at
src\cmd\go\testdata\script\build_repeated_godebug_issue62346.txt

Fixes #62346

Change-Id: Ic3267d878a6f7ebedb1cde64e6206de404176b10
Reviewed-on: https://go-review.googlesource.com/c/go/+/523836
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2024-06-10 14:46:37 +00:00
Jes Cok
da65071f36 cmd/compile/internal/types2: fix typo in comment for StoreTypesInSyntax
Change-Id: Ia73b15b6df5e6f88741f2b54258d7cbad0239ddd
Reviewed-on: https://go-review.googlesource.com/c/go/+/591396
Reviewed-by: Robert Findley <rfindley@google.com>
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2024-06-10 13:48:53 +00:00
Rodrigo Orselli
c83b1a7013 sync: include links to the Go memory model in package documentation
The lack of links to https://go.dev/ref/mem in the sync package
documentation makes it difficult to read for people who have no previous
knowledge of that page.  This PR includes the links where needed.

Fixes #67891

Change-Id: I0e1344cc6d7b702f4cb2e55fe0fcee3eb089391a
GitHub-Last-Rev: 427cf58aae
GitHub-Pull-Request: golang/go#67892
Reviewed-on: https://go-review.googlesource.com/c/go/+/591395
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2024-06-07 21:14:51 +00:00
Kir Kolyshkin
532cf27059 syscall: rm go:linkname from origRlimitNofile
Since CL 588076 runc can do fine without the kludge. The code accessing the symbol is now guarded with `go:build !go1.23` in all supported runc branches (main: [1], release-1.1: [2]).

This reverts part of CL 587219.

Updates #67401.

For #66797.

[1]: https://github.com/opencontainers/runc/pull/4290
[2]: https://github.com/opencontainers/runc/pull/4299

Change-Id: I204843a93c36857e21ab9b43bd7aaf046e8b9787
Reviewed-on: https://go-review.googlesource.com/c/go/+/587918
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2024-06-07 20:13:57 +00:00
qiulaidongfeng
5532427c4b os/exec: on Windows look for extensions in Run if not already done
CL 512155 fixed #36768, but introduced #62596.
CL 527820 fixed #62596, but meant that the code failed to look up
file extensions on Windows for a relative path.
This CL fixes that problem by recording whether it has already
looked up file extensions.
This does mean that if Path is set manually then we do not update
it with file extensions, as doing that would be racy.

Fixes #66586

Change-Id: I9a0305d1e466c5e07bfbe442566ea12f5255a96e
GitHub-Last-Rev: dc3169f235
GitHub-Pull-Request: golang/go#67035
Reviewed-on: https://go-review.googlesource.com/c/go/+/581695
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2024-06-07 20:13:53 +00:00
Michael Anthony Knyszek
1634fde4f9 iter: don't iterate if stop is called before next on Pull
Consider the following code snippet:

    next, stop := iter.Pull(seq)
    stop()

Today, seq will iterate exactly once before it notices that its
iteration is invalid to begin with. This effect is observable in a
variety of ways. For example, if the iterator panics, since that panic
must propagate to the caller of stop. But if the iterator is stateful in
anyway, then it may update some state.

This is somewhat unexpected and because it's observable, can be depended
upon. This behavior does not align well with other possible
implementations of Pull, like CPS performed by the compiler. It's also
just odd to let even one iteration happen, precisely because of
unexpected state modification.

Fix this by not iterating at all of the done flag is set before entering
the iterator.

For #67712.

Change-Id: I18162e29df45a2e8968f68379450d92e1de47c4d
Reviewed-on: https://go-review.googlesource.com/c/go/+/590075
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Austin Clements <austin@google.com>
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2024-06-07 19:09:28 +00:00
Michael Anthony Knyszek
9d2aeae72d iter: propagate runtime.Goexit from iterator passed to Pull
This change propagates a runtime.Goexit initiated by the iterator into
the caller of next and/or stop.

Fixes #67712.

Change-Id: I5bb8d22f749fce39ce4f587148c5fc71aee2af65
Reviewed-on: https://go-review.googlesource.com/c/go/+/589137
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: David Chase <drchase@google.com>
2024-06-07 19:09:18 +00:00
Michael Anthony Knyszek
1471978bac iter: propagate panics from the iterator passed to Pull
This change propagates panics from the iterator passed to Pull through
next and stop. Once the panic occurs, next and stop become no-ops (the
iterator is invalidated).

For #67712.

Change-Id: I05e45601d4d10acdf51b53e3164bd891c1b324ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/589136
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Austin Clements <austin@google.com>
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2024-06-07 19:09:09 +00:00
Paul E. Murphy
d5e5b14305 cmd/compile/ssa: fix (MOVWZreg (RLWINM)) folding on PPC64
RLIWNM does not clear the upper 32 bits of the target register if
the mask wraps around (e.g 0xF000000F). Don't elide MOVWZreg for
such masks. All other usage clears the upper 32 bits.

Fixes #67844.

Change-Id: I11b89f1da9ae077624369bfe2bf25e9b7c9b79bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/590896
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
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2024-06-07 19:02:52 +00:00
qiulaidongfeng
e709992afd cmd/go: avoid when go.env contain GOTOOLCHAIN=local test fail
The test fail when $GOROOT/go.env contain GOTOOLCHAIN=local
because GOTOOLCHAIN=local is assumed to be a non-default value.
This CL fixed the test failure
by using go.env from the test as $GOROOT/go.env throughout the test.
Test have also been added to ensure that
when $GOROOT/go.env contain GOTOOLCHAIN=local,
GOTOOLCHAIN=local is not taken as a non-default value.

Fixes #67793

Change-Id: Ibc5057d38d36c6c55726a039de1e7c37d6935b52
GitHub-Last-Rev: 12b62464e6
GitHub-Pull-Request: golang/go#67807
Reviewed-on: https://go-review.googlesource.com/c/go/+/590196
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
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2024-06-07 18:49:03 +00:00
Ian Lance Taylor
fbe478521f cmd/go: add pointer to build flags in "go get" docs
Fixes #67728

Change-Id: Ifbdee77dcebd865eac9501ec4615128eb3a9c9c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/590797
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2024-06-07 18:26:32 +00:00
Ian Lance Taylor
ce51533a9d os/signal: remove SIGSYS from list of signals that take no action
It actually causes the program to throw.

Fixes #67729

Change-Id: Id970baff631616a4dc4e434827e622e1b16f2724
Reviewed-on: https://go-review.googlesource.com/c/go/+/590915
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-06-07 18:11:00 +00:00
Chance Zibolski
640067f28a net/http: check GetConfigForClient in server.ServeTLS
Just like for tls.Config.GetCertificate the http.Server.ServeTLS method
should be checking tls.Config.GetConfigForClient before trying top open
the specified certFile/keyFile.

This was previously fixed for crypto/tls when using tls.Listen in
CL205059, but the same change for net/http was missed. I've added a
comment src/crypto/tls/tls.go in the relevant section in the hope that
any future changes of a similar nature consider will consider updating
net/http as needed as well.

Change-Id: I312303bc497d92aa2f4627fe2620c70779cbcc99
GitHub-Last-Rev: 6ed29a9008
GitHub-Pull-Request: golang/go#66795
Reviewed-on: https://go-review.googlesource.com/c/go/+/578396
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-06-07 17:57:01 +00:00
Cherry Mui
0b72631a82 cmd/compile: generate args_stackmap for ABI0 assembly func regardless of linkname
Currently, the compiler generates the argument stack map based on
the function signature for bodyless function declarations, if it
is not linknamed. The assumption is that linknamed function is
provided by (Go code in) another package, so its args stack map
will be generated when compiling that package.

Now we have linknames added to declarations of assembly functions,
to signal that this function is accessed externally. Examples
include runtime.morestack_noctxt, math/big.addVV. In the current
implementation the compiler does not generate its args stack map.
That causes the assembly function's args stack map missing.
Instead, change it to generate the stack map if it is a
declaration of an ABI0 function, which can only be defined in
assembly and passed to the compiler through the -symabis flag. The
stack map generation currently only works with ABI0 layout anyway,
so we don't need to handle ABIInternal assembly functions.

Change-Id: Ic9da3b4854c604e64ed01584da3865994f5b95b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/587928
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2024-06-07 15:22:22 +00:00
Cherry Mui
98529a8e7c cmd/link: don't include deadcoded function symbols in shared build mode
In shared build mode, we include all symbols. This includes
function symbols that are deadcoded by the compiler. They don't
really get compiled, and their metadata may be missing, causing
linker failures. Skip them.

Fixes #67635.

Change-Id: Ic0e64bd032be499cca26da5e9e3ffbe9998bac05
Reviewed-on: https://go-review.googlesource.com/c/go/+/588316
Reviewed-by: Than McIntosh <thanm@google.com>
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2024-06-07 14:52:41 +00:00
Anuraag Agrawal
f7c330eac7 runtime: add a note on SetFinalizer doc about method receiver
A method receiver can be collected during the execution of that method.
This does make sense when thinking about how the GC would work, but
also seems not very obvious, so a point in the docs can increase the
chance of avoiding issues caused by missing KeepAlive of method
receivers.

Change-Id: I6817237dd022b5729dbdcda1b9f70c7059605575
GitHub-Last-Rev: 878bf3fde7
GitHub-Pull-Request: golang/go#67777
Reviewed-on: https://go-review.googlesource.com/c/go/+/589735
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-06-07 01:56:56 +00:00
Damien Neil
cf501e05e1 net/http: send body or close connection on expect-100-continue requests
When sending a request with an "Expect: 100-continue" header,
we must send the request body before sending any further requests
on the connection.

When receiving a non-1xx response to an "Expect: 100-continue" request,
send the request body if the connection isn't being closed after
processing the response. In other words, if either the request
or response contains a "Connection: close" header, then skip sending
the request body (because the connection will not be used for
further requests), but otherwise send it.

Correct a comment on the server-side Expect: 100-continue handling
that implied sending the request body is optional. It isn't.

For #67555

Change-Id: Ia2f12091bee697771087f32ac347509ec5922d54
Reviewed-on: https://go-review.googlesource.com/c/go/+/591255
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Reviewed-by: Jonathan Amsterdam <jba@google.com>
2024-06-06 21:59:21 +00:00
Michael Matloob
2f6ba0c294 cmd/go/internal/modget: print a fatal error if -d=false
Between Go 1.18 and Go 1.22 go get printed a fatal error if -d was
explicitly set to false. That behavior was reverted in CL 572176, when
we made the -d flag a no-op, but it would make it easier to remove the
-d flag in the future if we continue to print a fatal error if -d is
explicitly set to false.

This change brings back the fatal error for -d=false while keeping the
warning printed for -d=true.

For #43684

Change-Id: I38ae3a3619d408c0237ff485ddee4403b8188abd
Reviewed-on: https://go-review.googlesource.com/c/go/+/591135
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Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
2024-06-06 19:50:03 +00:00
Michael Matloob
4b0dd55608 cmd/go/internal/modload: add line numbers to godebug errors
In addition, add a line number to the go.work error for multiple use statements
for the same directory. Also clean up the error prefix for go.work
errors now containing line numbers.

Fixes #67623

Change-Id: Ia7edcc50f7d7ec907b4a9eb4fe270c75d04c1fa5
Reviewed-on: https://go-review.googlesource.com/c/go/+/590135
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
Auto-Submit: Michael Matloob <matloob@golang.org>
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2024-06-06 18:36:30 +00:00
Michael Matloob
2be4b3913a cmd/go/internal/modload: respect overlays when loading go.work files
Before this change, we didn't initialize the overlays in the fsys
package or use the fsys logic to read the files, so overlays were not
respected for go.work files. Initialize fsys before loading the go.work
file (initialization is idempotent) and use the new fsys.ReadFile
function to read the file instead of os.ReadFile.

fsys.ReadFile just opens the file with fsys.Open and then calls
io.ReadAll on it. (This is less efficient than what os.ReadFile does:
os.ReadFile reads into a buffer it allocated that's the file's size
while io.ReadAll doesn't know how big the file is so it just reads in
512 byte chunks.)

Change-Id: Ic40bcbb483a16c5d4dd1d896306ea99a16f370f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/590755
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
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Auto-Submit: Michael Matloob <matloob@golang.org>
2024-06-06 18:35:34 +00:00
Robert Griesemer
1831437f19 math/big: better doc string for Float.Copy, add example test
Fixes #66358.

Change-Id: Ic9bde88eabfb2a446d32e1dc5ac404a51ef49f11
Reviewed-on: https://go-review.googlesource.com/c/go/+/590635
Auto-Submit: Robert Griesemer <gri@google.com>
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2024-06-06 15:46:54 +00:00
Keith Randall
45967bb18e runtime: soften up the GCTestIsReachable test a bit
This test can fail due to objects being incorrectly retained due
to conservative scanning. Allow a bit of slop (1 accidentally
retained object) to prevent flaky failures.

Fixes #67204

"fixes" is a bit too strong a word. More like, hopefully reduces
the false positive rate to something approaching 0.

Change-Id: I09984f0cce50d8209aef19f3d89b0e295c86f8d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/590615
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2024-06-05 22:33:52 +00:00
Robert Griesemer
7274921681 doc: document new default for GODEBUG gotypesalias setting in release notes
For #65614.

Change-Id: I9487521817348053170da293c01ac55f6e3dcd20
Reviewed-on: https://go-review.googlesource.com/c/go/+/590895
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2024-06-05 21:30:00 +00:00
Gopher Robot
d2909ec885 api: promote next to go1.23
Change-Id: I219c59b5efc2ed7fcfdd7cd3c418635831b17b8a
Reviewed-on: https://go-review.googlesource.com/c/go/+/590835
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2024-06-05 20:48:49 +00:00
Dmitri Shuralyov
e53d10dc04 doc: mark range-over-func as documented
The language change for the accepted range-over-func proposal #61405
was documented in CL 590616. Remove the corresponding 'TODO' entry.

Also improve formatting slightly, and switch to preferred relative
links. They'll work better in the long term and in more contexts.

While here, also simplify the suggested line to preview release notes
locally: setting the -content='' flag explicitly is no longer required
as of CL 589936.

For #65614.

Change-Id: I6cee951b9ede33900bca48c9f709e3b2c5e87337
Reviewed-on: https://go-review.googlesource.com/c/go/+/590756
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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2024-06-05 19:56:43 +00:00
Damien Neil
b658265012 net/http: use default HTTP/2 frame scheduler
Use the default frame scheduler (currently round-robin)
rather than overriding the default with the priority scheduler.

The priority scheduler is slow, known buggy, and implements
a deprecated stream prioritization mechanism. The default
changed in x/net about a year ago, but we missed that net/http
is overriding that default.

Fixes #67706

Change-Id: I6d76dd0cc8c55eb5dec5cd7d25a5084877e8e8d9
Reviewed-on: https://go-review.googlesource.com/c/go/+/590796
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2024-06-05 19:28:07 +00:00
Ian Lance Taylor
93bbf719a6 doc/next: mention new error on time.Parse timezone overflow
For #65614
For #67470

Change-Id: Iba2f263f8ca1fb10c383e12ff3455aa86b26421d
Reviewed-on: https://go-review.googlesource.com/c/go/+/590795
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2024-06-05 17:30:16 +00:00
Robert Griesemer
f3ae135604 doc: document GOEXPERIMENT=aliastypeparams in release notes
For #65614.

Change-Id: I05b20a80b1163e1d3927c2f763ef6b7d20e6a937
Reviewed-on: https://go-review.googlesource.com/c/go/+/590617
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2024-06-05 15:56:51 +00:00
limeidan
7a072fc250 cmd/link/internal/loong64: correct the musl dynamic linker path
The arch name of loong64 should be loongarch64

Fixes #67832

Change-Id: Ic5cf0f0274262a164bba78c426813a8b8851033b
Reviewed-on: https://go-review.googlesource.com/c/go/+/590695
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2024-06-05 13:49:14 +00:00