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52059 Commits

Author SHA1 Message Date
Bryan C. Mills
8e1a9c34ab net: eliminate a deadlock on the failure path in TestNotTemporaryRead
This fixes a deadlock-on-failure that I probably introduced in
CL 385314.

This doesn't explain why the failure observed in #52492 occurred, but
it will at least give us more information to diagnose the failure if
it happens again. (The deadlock currently prevents the t.Fatal log
message from being written to the test's output.)

Fixes #52492.

Change-Id: I9e7874985e2820a6a4b703abe4f8e2035d5138c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/401575
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
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2022-04-22 21:27:09 +00:00
Michael Pratt
3e732411e5 runtime/internal/syscall: use ABIInternal for Syscall6 on amd64
This is an exact copy of CL 401096 after fixing #52472 in CL 401654.

For #51087
For #52472

Change-Id: Ib3c914949a15517aacdca2d72e69e1c7b217e430
Reviewed-on: https://go-review.googlesource.com/c/go/+/401656
Run-TryBot: Michael Pratt <mpratt@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2022-04-22 19:53:07 +00:00
Michael Pratt
808d40d780 syscall: define Syscall6 in terms of RawSyscall6 on linux
This is an exact copy of CL 388478 after fixing #52472 in CL 401654.

For #51087
For #52472

Change-Id: I6c6bd7ddcab1512c682e6b44f61c7bcde97f5c58
Reviewed-on: https://go-review.googlesource.com/c/go/+/401655
Run-TryBot: Michael Pratt <mpratt@google.com>
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2022-04-22 19:02:29 +00:00
Dmitri Shuralyov
534a911338 runtime: skip TestNoShrinkStackWhileParking on openbsd
The test has proven to be flaky on OpenBSD since March, and there
hasn't been progress on resolving this finding. Mark the test as
flaky to so that this problem doesn't block the Go 1.19 release.

Updates #51482.

Change-Id: I92ad7498c20cfa94565880363bec85f9a4f3e916
Reviewed-on: https://go-review.googlesource.com/c/go/+/401335
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
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Reviewed-by: Michael Pratt <mpratt@google.com>
2022-04-22 17:22:12 +00:00
Robert Findley
3227501364 go/types: use error_.errorf for reporting related error information
Use error_.errorf for reporting related error information rather than
inlining the "\n\t". This aligns go/types with types2 in cases where the
related information has no position information. In other cases,
go/types needs to report a "continuation error" (starting with '\t') so
that users can access multiple error positions.

Change-Id: Ica98466596c374e0c1e502e7227c8d8c803b4c22
Reviewed-on: https://go-review.googlesource.com/c/go/+/400825
Run-TryBot: Robert Findley <rfindley@google.com>
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2022-04-22 15:46:57 +00:00
Robert Findley
65d7345e8b go/types: introduce the error_ type to match types2
To begin aligning with types2 error reporting, use an error_ type to
hold unevaluated error information, to report via Checker.report.

Change-Id: Ic5ac515759961e55b81acc9eeaac4db25b61804c
Reviewed-on: https://go-review.googlesource.com/c/go/+/400824
Run-TryBot: Robert Findley <rfindley@google.com>
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2022-04-22 15:46:52 +00:00
Robert Findley
1899472647 go/types: remove unnecessary indirection when reporting errors
Checker.err was only called to report errors created with
Checker.newError or Checker.newErrorf. Update the API to pass around
*Error rather than error, eliminating unnecessary type assertions and
handling.

Change-Id: I995a120c7e87266e656b8ff3fd9ed3d368fd17fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/400823
Run-TryBot: Robert Findley <rfindley@google.com>
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2022-04-22 15:44:57 +00:00
Bryan Mills
507b70d1e8 Revert "cmd/compile: enable Asan check for global variables"
This reverts CL 321715.

Reason for revert: broke cmd/go.TestScript/install_msan_and_race_require_cgo on several builders.

Change-Id: Ia0392de555d6e973960769a0e4709f0193d16706
Reviewed-on: https://go-review.googlesource.com/c/go/+/401755
Run-TryBot: Bryan Mills <bcmills@google.com>
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2022-04-22 13:59:32 +00:00
Bryan Mills
440c9312c8 Revert "net: permit use of Resolver.PreferGo, netgo on Windows and Plan 9"
This reverts CL 400654.

Reason for revert: broke net.TestGoLookupIP on the darwin-amd64-nocgo builder.

Updates #33097.

Change-Id: Idaf94eda88c9d4401e667a4d31c00ce376d91909
Reviewed-on: https://go-review.googlesource.com/c/go/+/401754
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2022-04-22 13:39:44 +00:00
Archana R
78fb1d03d3 internal/bytealg: optimize cmpbody for ppc64le/ppc64
Vectorize the cmpbody loop for bytes of size greater than or equal
to 32 on both POWER8(LE and BE) and POWER9(LE and BE) and improve
performance of smaller size compares

Performance improves for most sizes with this change on POWER8, 9
and POWER10. For the very small sizes (upto 8) the overhead of
calling function starts to impact performance.

POWER9:
name               old time/op  new time/op  delta
BytesCompare/1     4.60ns ± 0%  5.49ns ± 0%  +19.27%
BytesCompare/2     4.68ns ± 0%  5.46ns ± 0%  +16.71%
BytesCompare/4     6.58ns ± 0%  5.49ns ± 0%  -16.58%
BytesCompare/8     4.89ns ± 0%  5.46ns ± 0%  +11.64%
BytesCompare/16    5.21ns ± 0%  4.96ns ± 0%   -4.70%
BytesCompare/32    5.09ns ± 0%  4.98ns ± 0%   -2.14%
BytesCompare/64    6.40ns ± 0%  5.96ns ± 0%   -6.84%
BytesCompare/128   11.3ns ± 0%   8.1ns ± 0%  -28.09%
BytesCompare/256   15.1ns ± 0%  12.8ns ± 0%  -15.16%
BytesCompare/512   26.5ns ± 0%  23.3ns ± 5%  -12.03%
BytesCompare/1024  50.2ns ± 0%  41.6ns ± 2%  -17.01%
BytesCompare/2048  99.3ns ± 0%  86.5ns ± 0%  -12.88%

Change-Id: I24f93b2910591e6829ddd8509aa6eeaa6355c609
Reviewed-on: https://go-review.googlesource.com/c/go/+/362797
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
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2022-04-22 12:12:38 +00:00
fanzha02
1e5987635c cmd/compile: enable Asan check for global variables
With this patch, -asan option can detect the error memory
access to global variables.

So this patch makes a few changes:

1. Add the asanregisterglobals runtime support function,
which calls asan runtime function _asan_register_globals
to register global variables.

2. Create a new initialization function for the package
being compiled. This function initializes an array of
instrumented global variables and pass it to function
runtime.asanregisterglobals. An instrumented global
variable has trailing redzone.

3. Writes the new size of instrumented global variables
that have trailing redzones into object file.

4. Notice that the current implementation is only compatible with
the ASan library from version v7 to v9. Therefore, using the
-asan option requires that the gcc version is not less than 7
and the clang version is less than 4, otherwise a segmentation
fault will occur. So this patch adds a check on whether the compiler
being used is a supported version in cmd/go.

Change-Id: I664e74dcabf5dc7ed46802859174606454e8f1d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/321715
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Fannie Zhang <Fannie.Zhang@arm.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-04-22 04:42:23 +00:00
Meng Zhuo
be1d7388b3 internal/bytealg: port bytealg functions to reg ABI on riscv64
This CL adds support for the reg ABI to the bytes functions for
riscv64. These are initially under control of the
GOEXPERIMENT macro until all changes are in.

Change-Id: I026295ae38e2aba055f7a51c77f92c1921e5ec97
Reviewed-on: https://go-review.googlesource.com/c/go/+/361916
Run-TryBot: mzh <mzh@golangcn.org>
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2022-04-22 01:41:25 +00:00
Bryan C. Mills
bf19163a54 runtime/cgo: remove stdlib.h warning workaround on darwin
CL 205457 added the flag -Wno-nullability-completeness to work
around a user-reported build breakage on macOS Catalina.

However, according to
https://golang.org/issue/35247#issuecomment-589115489 the root cause
of the breakage may be a toolchain misconfiguration on the host
(perhaps compiling the XCode stdlib using a Homebrew build of the
"clang" compiler?).

Adding an obscure warning flag to enable building stdlib.h with an
otherwise-broken toolchain seems clearly inappropriate to me.
If need be we can instead provide guidance to users on how to unbreak
their toolchain.

Updates #35247
Fixes #49913

Change-Id: I84def34e101bed7911d8d78a991a29095b8791fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/368634
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-04-22 00:37:23 +00:00
Tobias Klauser
c9031a44b2 net/netip: fix Addr.Unmap reference in Addr.Is4 godoc comment
In CL 339309 this was probably copied from the respective godoc comment
in package inet.af/netaddr, also see
https://pkg.go.dev/inet.af/netaddr#IP.Is4

In net/netip the type is named Addr, so adjust the godoc comment
accordingly.

Change-Id: Ib5ab8054067f8b74119efa4732192a8407189f9b
Reviewed-on: https://go-review.googlesource.com/c/go/+/401394
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2022-04-22 00:25:08 +00:00
Ian Lance Taylor
575fd8817a regexp: change ErrInvalidDepth message to match proposal
Also update the file in $GOROOT/api/next to use proposal number.

For #51684

Change-Id: I28bfa6bc1cee98a17b13da196d41cda34d968bb0
Reviewed-on: https://go-review.googlesource.com/c/go/+/401076
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-04-22 00:10:17 +00:00
Brad Fitzpatrick
c510cd92cf net: permit use of Resolver.PreferGo, netgo on Windows and Plan 9
Fixes #33097

Change-Id: I2e55c7c113683814521f2068e0922b63c62ea5d8
Reviewed-on: https://go-review.googlesource.com/c/go/+/400654
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
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2022-04-22 00:05:54 +00:00
Joe Tsai
67d6be139c reflect: make more Value methods inlineable
The following Value methods are now inlineable:

    Bool  for ~bool
    String for ~string (but not other kinds)
    Bytes for []byte (but not ~[]byte or ~[N]byte)
    Len   for ~[]T (but not ~[N]T, ~chan T, ~map[K]V, or ~string)
    Cap   for ~[]T (but not ~[N]T or ~chan T)

For Bytes, we only have enough inline budget to inline one type,
so we optimize for unnamed []byte, which is far more common than
named []byte or [N]byte.

For Len and Cap, we only have enough inline budget to inline one kind,
so we optimize for ~[]T, which is more common than the others.
The exception is string, but the size of a string can be obtained
through len(v.String()).

Performance:

	Bool        1.65ns ± 0%  0.51ns ± 3%  -68.81%  (p=0.008 n=5+5)
	String      1.97ns ± 1%  0.70ns ± 1%  -64.25%  (p=0.008 n=5+5)
	Bytes       8.90ns ± 2%  0.89ns ± 1%  -89.95%  (p=0.008 n=5+5)
	NamedBytes  8.89ns ± 1%  8.88ns ± 1%     ~     (p=0.548 n=5+5)
	BytesArray  10.0ns ± 2%  10.2ns ± 1%   +1.58%  (p=0.048 n=5+5)
	SliceLen    1.97ns ± 1%  0.45ns ± 1%  -77.22%  (p=0.008 n=5+5)
	MapLen      2.62ns ± 1%  3.07ns ± 1%  +17.24%  (p=0.008 n=5+5)
	StringLen   1.96ns ± 1%  1.98ns ± 2%     ~     (p=0.151 n=5+5)
	ArrayLen    1.96ns ± 1%  2.19ns ± 1%  +11.46%  (p=0.008 n=5+5)
	SliceCap    1.76ns ± 1%  0.45ns ± 2%  -74.28%  (p=0.008 n=5+5)

There's a slight slowdown (~10-20%) for obtaining the length
of a string or map, but a substantial improvement for slices.

Performance according to encoding/json:

	CodeMarshal          555µs ± 2%   562µs ± 4%     ~     (p=0.421 n=5+5)
	MarshalBytes/32      163ns ± 1%   157ns ± 1%   -3.82%  (p=0.008 n=5+5)
	MarshalBytes/256     453ns ± 1%   447ns ± 1%     ~     (p=0.056 n=5+5)
	MarshalBytes/4096   4.10µs ± 1%  4.09µs ± 0%     ~     (p=1.000 n=5+4)
	CodeUnmarshal       3.16ms ± 2%  3.02ms ± 1%   -4.18%  (p=0.008 n=5+5)
	CodeUnmarshalReuse  2.64ms ± 3%  2.51ms ± 2%   -4.81%  (p=0.016 n=5+5)
	UnmarshalString     65.4ns ± 4%  64.1ns ± 0%     ~     (p=0.190 n=5+4)
	UnmarshalFloat64    59.8ns ± 5%  58.9ns ± 2%     ~     (p=0.222 n=5+5)
	UnmarshalInt64      51.7ns ± 1%  50.0ns ± 2%   -3.26%  (p=0.008 n=5+5)
	EncodeMarshaler     23.6ns ±11%  20.8ns ± 1%  -12.10%  (p=0.016 n=5+4)

Add all inlineable methods of Value to cmd/compile/internal/test/inl_test.go.

Change-Id: Ifc192491918af6b62f7fe3a094a5a5256bfb326d
Reviewed-on: https://go-review.googlesource.com/c/go/+/400676
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-04-21 23:45:36 +00:00
Derek Parker
3c29aca436 cmd/compile: Unify & improve struct comparisons
Partially fixes https://github.com/golang/go/issues/38674

The first commit has the actual unification, the second commit just cleans things up by moving shared code into its own package for clarity.

Change-Id: I85067f8b247df02f94684ec1297a1a42263bba0c
GitHub-Last-Rev: 370a4ecad3
GitHub-Pull-Request: golang/go#52315
Reviewed-on: https://go-review.googlesource.com/c/go/+/399542
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-04-21 23:45:31 +00:00
mkontani
555bed939d test/typeparam: fix copyright message
Change-Id: Ia0a4be56d4e1fbfc73e6ce24f01a658c89a74adb
GitHub-Last-Rev: dd95e50c4b
GitHub-Pull-Request: golang/go#52393
Reviewed-on: https://go-review.googlesource.com/c/go/+/400694
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2022-04-21 23:41:49 +00:00
Carlo Alberto Ferraris
21e1ffe7bc bufio: implement large write forwarding in Writer.WriteString
Currently bufio.Writer implements forwarding to the underlying Writer
for large writes via Write, but it does not do the same for large
writes via WriteString.

If the underlying Writer is also a StringWriter, use the same "large
writes" logic also in WriteString while taking care to only check
once per call to WriteString whether the underlying Writer implements
StringWriter.

Change-Id: Id81901c07b035936816b9e41b1f5688e699ee8e9
Reviewed-on: https://go-review.googlesource.com/c/go/+/380074
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2022-04-21 23:41:03 +00:00
Ian Lance Taylor
01837ca7eb reflect: in assignTo only allocate target if needed
Also correct parameter name in comment.

Change-Id: Ic9486e08c2eea184faccf181cda7da808793def6
Reviewed-on: https://go-review.googlesource.com/c/go/+/400674
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2022-04-21 23:38:34 +00:00
Michael Pratt
bb004a179a syscall: define Syscall in terms of RawSyscall on linux
This is a re-do of CL 388477, fixing #52472.

It is unsafe to call syscall.RawSyscall from syscall.Syscall with
-coverpkg=all and -race. This is because:

1. Coverage adds a sync/atomic call in RawSyscall to increment the
   coverage counter.
2. Race mode instruments sync/atomic calls with TSAN runtime calls. TSAN
   eventually calls runtime.racecallbackfunc, which expects
   getg().m.p != 0, which is no longer true after entersyscall().

cmd/go actually avoids adding coverage instrumention to package runtime
in race mode entirely to avoid these kinds of problems. Rather than also
excluding all of syscall for this one function, work around by calling
RawSyscall6 instead, which avoids coverage instrumention both by being
written in assembly and in package runtime/*.

For #51087
Fixes #52472

Change-Id: Iaffd27df03753020c4716059a455d6ca7b62f347
Reviewed-on: https://go-review.googlesource.com/c/go/+/401654
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2022-04-21 22:10:49 +00:00
Michael Pratt
889a902d21 cmd/trace: embed static content
cmd/trace is currently somewhat painful to use in odd environments since
it depends on the presence of $GOROOT/misc/trace to serve the static
trace viewer content.

Use //go:embed to embed this content directly into cmd/trace for easier
use.

Change-Id: I83b7d97dbecc9773f3b5a6b3bc4a6597473bc01a
Reviewed-on: https://go-review.googlesource.com/c/go/+/378194
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2022-04-21 21:18:18 +00:00
Daniel Martí
430ae97a25 go/format: skip go/ast's object resolution
Just like https://golang.org/cl/401454 removed the work from gofmt for a
nice ~5% speed-up in the default case, we can also use the option in the
equivalent go/format for programs which use it rather than gofmt,
as go/format makes no use of objects either.

No benchmark numbers as we already measured the ~5% speed-up with gofmt
in the other CL linked above.

See #46485.

Change-Id: Icbf98e6d46a616081314e2faa13f1dfade3bbaef
Reviewed-on: https://go-review.googlesource.com/c/go/+/401474
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2022-04-21 21:07:18 +00:00
Daniel Martí
f5af1e83a5 cmd/gofmt: only resolve go/ast objects when needed
go/parser will by default resolve objects as per the go/ast.Object type,
which is then used by gofmt's rewrite and simplify flags.
However, none of that is needed if neither of the flags is set,
so we can avoid the work entirely for a nice speed-up.

	benchcmd -n 8 GofmtSrcCmd gofmt -l ~/tip/src/cmd

	name         old time/op         new time/op         delta
	GofmtSrcCmd          957ms ± 7%          908ms ± 7%  -5.12%  (p=0.028 n=8+8)

	name         old user-time/op    new user-time/op    delta
	GofmtSrcCmd          11.2s ± 1%          10.4s ± 1%  -7.23%  (p=0.001 n=7+7)

	name         old sys-time/op     new sys-time/op     delta
	GofmtSrcCmd          325ms ±29%          286ms ±22%    ~     (p=0.065 n=8+8)

	name         old peak-RSS-bytes  new peak-RSS-bytes  delta
	GofmtSrcCmd          295MB ±17%          276MB ±15%    ~     (p=0.328 n=8+8)

See #46485.

Change-Id: Iad1ae294953710c233f7837d7eb02e23d11c6185
Reviewed-on: https://go-review.googlesource.com/c/go/+/401454
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2022-04-21 21:07:15 +00:00
Roland Shoemaker
4d96c3cdad crypto/x509: revert serial length restriction
This reverts CL400377, which restricted serials passed to
x509.CreateCertificate to <= 20 octets. Unfortunately this turns out to
be something _a lot_ of people get wrong. Since it's not particularly
obvious how to properly generate conformant serials, until we provide
an easier way for people to get this right, reverting this restriction
makes sense (possible solution discussed in #52444.)

Change-Id: Ia85a0ffe61e2e547abdaf1389c3e1ad29e28a2be
Reviewed-on: https://go-review.googlesource.com/c/go/+/401657
Reviewed-by: Roland Shoemaker <roland@golang.org>
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2022-04-21 21:06:36 +00:00
Michael Pratt
aac1d3a1b1 Revert "syscall: define Syscall in terms of RawSyscall on linux"
This reverts CL 388477, which breaks cmd/go
TestScript/cover_pkgall_runtime.

For #51087.
For #52472.

Change-Id: Id58af419a889281f15df2471c58fece011fcffbc
Reviewed-on: https://go-review.googlesource.com/c/go/+/401636
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2022-04-21 19:06:52 +00:00
Michael Pratt
d35ec0b899 Revert "syscall: define Syscall6 in terms of RawSyscall6 on linux"
This reverts CL 388478. Parent CL 388477 breaks cmd/go
TestScript/cover_pkgall_runtime.

For #51087.
For #52472.

Change-Id: Id5d5a4e138792cf130ecdcc6b996c8102d142a7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/401635
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2022-04-21 19:06:50 +00:00
Michael Pratt
347534343b Revert "runtime/internal/syscall: use ABIInternal for Syscall6 on amd64"
This reverts CL 401096. Grandparent CL 388477 breaks cmd/go
TestScript/cover_pkgall_runtime.

For #51087.
For #52472.

Change-Id: Ie82fe5f50975f66eb91fb0d01cd8bbbd0265eb4e
Reviewed-on: https://go-review.googlesource.com/c/go/+/401634
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2022-04-21 19:06:49 +00:00
Ian Lance Taylor
a4ded4b5ff misc/cgo/test: remove timing dependency from TestParallelSleep
Rename it TestIssue1560 since it no longer sleeps.

For #1560
Fixes #45586

Change-Id: I338eee9de43e871da142143943e9435218438e90
Reviewed-on: https://go-review.googlesource.com/c/go/+/400194
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-04-21 18:43:55 +00:00
Michael Matloob
f95db21332 cmd/go: add a better error message when in a module outside workspace
When the user is trying to list or build a package in a module that's
outside of the workspace provide a more clear message hinting to the
user that they can add the module to the workspace using go work use.

Fixes #51604

Change-Id: I1202ecb2f22fd6351bfdec88ed613b8167687fb7
Reviewed-on: https://go-review.googlesource.com/c/go/+/400014
Run-TryBot: Michael Matloob <matloob@golang.org>
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2022-04-21 18:22:57 +00:00
Michael Pratt
5b32a6f179 runtime/internal/syscall: use ABIInternal for Syscall6 on amd64
For #51087.

Change-Id: I25971760b63ec0d23d0f011521dd197d81a38976
Reviewed-on: https://go-review.googlesource.com/c/go/+/401096
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2022-04-21 18:07:33 +00:00
Michael Pratt
a56e2f672b syscall: define Syscall6 in terms of RawSyscall6 on linux
For #51087

Change-Id: I4a5b5cb74f12db8999c6ff0e98c3034b58af3959
Reviewed-on: https://go-review.googlesource.com/c/go/+/388478
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2022-04-21 18:07:25 +00:00
Michael Pratt
64e69d3925 syscall: define Syscall in terms of RawSyscall on linux
For #51087

Change-Id: I9de7e85ccf137ae73662759382334bcbe7208150
Reviewed-on: https://go-review.googlesource.com/c/go/+/388477
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2022-04-21 18:07:14 +00:00
Michael Pratt
f7b12ff6fb syscall: define RawSyscall in terms of RawSyscall6 on linux
For #51087

Change-Id: I63e07638507328efe33dbf7dd5f8a8b78890e037
Reviewed-on: https://go-review.googlesource.com/c/go/+/388476
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2022-04-21 18:07:03 +00:00
Michael Pratt
15602e8865 runtime/internal/syscall, syscall: replace RawSyscall6 with runtime implementation on linux
For #51087

Change-Id: I75a1bdeb5089454595f5ca04765a9c6e45cf9bd5
Reviewed-on: https://go-review.googlesource.com/c/go/+/388475
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2022-04-21 18:06:56 +00:00
Michael Pratt
1de1c0d10d syscall: move Syscall declarations to OS files
Future CLs will be changing the provenance of these functions. Move the
declarations to the individual OS files now so that future CLs can
change only 1 OS at a time rather than changing all at once.

For #51087

Change-Id: I5e1bca71e670263d8c0faa586c1b6b4de1a114b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/388474
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2022-04-21 18:06:48 +00:00
Michael Pratt
342b495301 cmd/compile: add //go:uintptrkeepalive
This CL exports the existing ir.UintptrKeepAlive via the new directive
//go:uintptrkeepalive. This makes the compiler insert KeepAlives for
pointers converted to uintptr in calls, keeping them alive for the
duration of the call.

//go:uintptrkeepalive requires //go:nosplit, as stack growth can't
handle these arguments (it cannot know which are pointers). We currently
check this on the immediate function, but the actual restriction applies
to all transitive calls.

The existing //go:uintptrescapes is an extension of
//go:uintptrkeepalive which forces pointers to escape to the heap, thus
eliminating the stack growth issue.

This pragma is limited to the standard library.

For #51087

Change-Id: If9a19d484d3561b4219e5539b70c11a3cc09391e
Reviewed-on: https://go-review.googlesource.com/c/go/+/388095
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2022-04-21 18:06:38 +00:00
Michael Pratt
e25a5ce120 test: rename live_syscall.go to live_uintptrkeepalive.go
CL 388095 will change this file significantly. Move it preemptively to
ensure git tracks the move properly.

For #51087

Change-Id: I1408aecf8675723041b64e54cf44cdec38cc655c
Reviewed-on: https://go-review.googlesource.com/c/go/+/388094
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2022-04-21 18:06:26 +00:00
Bryan C. Mills
9de57244e1 go/build: replace a call to os.Environ with (*exec.Cmd).Environ
This is a code simplification using the new API added in #50599.

Change-Id: Icb9628bcd0daa3dc2d653e9654b38099730137d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/401535
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2022-04-21 17:49:00 +00:00
Bryan C. Mills
824b0a34b7 cmd/go: replace some calls to base.AppendPWD with cmd.Environ
With #50599 implemented, base.AppendPWD is redundant if cmd.Env would
otherwise be nil, and calls to os.Environ followed by base.AppendPWD
can be replaced by a simpler call to cmd.Environ.

Updates #50599.

Change-Id: I94a22e2a4cc8e83c815ac41702ea0b1ee5034ecc
Reviewed-on: https://go-review.googlesource.com/c/go/+/401534
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2022-04-21 17:48:53 +00:00
zhangyunhao
a4bbcd4b1f net: use fastrand64 in randInt
Change-Id: If3d8391d81e8de869dbb3c857f0570817e8aa440
Reviewed-on: https://go-review.googlesource.com/c/go/+/400914
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org>
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2022-04-21 17:46:26 +00:00
zhangyunhao
01b8f5e882 runtime: use fastrand64 in mapiterinit
Change-Id: I5698c7576a0f39ae62de7bea64286ac8e578d421
Reviewed-on: https://go-review.googlesource.com/c/go/+/400916
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org>
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2022-04-21 17:46:15 +00:00
zhangyunhao
c2d436dcfa hash/maphash: use fastrand64 in MakeSeed
Change-Id: I5ccbcea4c53658136b25ca608faec19eeec2e908
Reviewed-on: https://go-review.googlesource.com/c/go/+/400915
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org>
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2022-04-21 17:46:04 +00:00
Bryan C. Mills
b34838913d os/exec: set PWD implicitly if Dir is non-empty and Env is nil
Fixes #50599.

Change-Id: I4e5dbb3972cdf21ede049567bfb98f2c992c5849
Reviewed-on: https://go-review.googlesource.com/c/go/+/401340
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2022-04-21 17:37:05 +00:00
Bryan Mills
115852077f Revert "cmd/go/internal/test: wrap os.Stdout always"
This reverts CL 400877.

Reason for revert: broke TestScript/test_output_wait and the
regression test for #18153 on certain builders.

Fixes #52461.

Change-Id: I98627ce5e22088b0784be502c459480c41ba353a
Reviewed-on: https://go-review.googlesource.com/c/go/+/401494
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
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2022-04-21 16:38:04 +00:00
Roland Shoemaker
b941a10e38 crypto/x509: use SAN when comparing certs during path building
Per RFC 4158 Section 2.4.2, when we are discarding candidate
certificates during path building, use the SANs as well as subject and
public key when checking whether a certificate is already present in
the built path. This supports the case where a certificate in the chain
(typically a leaf) has the exact same subject and public key as another
certificate in the chain (typically its parent) but has SANs which don't
match.

Change-Id: I212c234e94a1f6afbe9691e4a3ba257461db3a7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/401115
Reviewed-by: Roland Shoemaker <roland@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
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Reviewed-by: Damien Neil <dneil@google.com>
2022-04-21 16:18:44 +00:00
Roland Shoemaker
1715a86721 crypto/tls: reject duplicate extensions
Does what it says on the tin.

Fixes #51088

Change-Id: I12c0fa6bba1c1ce96c1ad31ba387c77a93f801c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/384894
Reviewed-by: Roland Shoemaker <roland@golang.org>
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2022-04-21 16:18:13 +00:00
Bryan C. Mills
aa24255541 os/exec: preserve original order of entries in dedupEnv
Once #50599 is implemented, the entries will be observable via the
Environ method. I find it confusing for later entries in the list to
jump arbitrarily far forward based on entries for the same key that no
longer exist.

This also fixes the deduplication logic for the degenerate Windows
keys observed in #49886, which were previously deduplicated as empty
keys.

(It does not do anything about the even-more-degenerate keys observed
in #52436.)

For #50599.

Change-Id: Ia7cd2200ec34ccc4b9d18631cb513194dc420c25
Reviewed-on: https://go-review.googlesource.com/c/go/+/401339
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-04-21 14:26:18 +00:00
Andrew Gerrand
ab9d31da9e cmd/go/internal/test: wrap os.Stdout always
There is an issue where 'go test' will hang after the tests complete if
a test starts a sub-process that does not exit (see #24050).

However, go test only exhibits that behavior when a package name is
explicitly passed as an argument. If 'go test' is invoked without any
package arguments then the package in the working directory is assumed,
however in that case (and only that case) os.Stdout is used as the test
process's cmd.Stdout, which does *not* cause 'go test' wait for the
sub-process to exit (see #23019).

This change wraps os.Stdout in an io.Writer struct in this case, hiding
the *os.File from the os/exec package, causing cmd.Wait to always wait
for the full output from the test process and any of its sub-processes.

In other words, this makes 'go test' exhibit the same behavior as
'go test .' (or 'go test ./...' and so on).

Update #23019
Update #24050

Change-Id: Ica09bf156f3b017f9a31aad91ed0f16a7837195b
Reviewed-on: https://go-review.googlesource.com/c/go/+/400877
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2022-04-21 00:45:18 +00:00