When it calculates the smallest n such that:
n >= i && n % buildInfoAlign == 0
the expression should be
(i+buildInfoAlign-1)&^(buildInfoAlign-1)
instead of
(i+buildInfoAlign-1)&^buildInfoAlign
Fixes#54968.
Change-Id: Ibb7bdf568a521545b2609acc85e2ab4e05da5dae
GitHub-Last-Rev: 479ebc140a
GitHub-Pull-Request: golang/go#54971
Reviewed-on: https://go-review.googlesource.com/c/go/+/429815
Reviewed-by: Ian Lance Taylor <iant@google.com>
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For example:
movb a0, a0
srai $1, a0, a0
the assembler will expand to:
slli $56, a0, a0
srai $56, a0, a0
srai $1, a0, a0
this CL optimize to:
slli $56, a0, a0
srai $57, a0, a0
Remove 270+ instructions from Go binary on linux/riscv64.
Change-Id: I375e19f9d3bd54f2781791d8cbe5970191297dc8
Reviewed-on: https://go-review.googlesource.com/c/go/+/428496
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org>
Reviewed-by: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Change-Id: I375233dc700adbc58a6d4af995d07b352bf85b11
GitHub-Last-Rev: ef12920523
GitHub-Pull-Request: golang/go#55994
Reviewed-on: https://go-review.googlesource.com/c/go/+/437715
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This fixes a bug introduced by CL 426094 that caused the
golang.org/x/website/internal/web tests to fail.
Fixes#56034
Change-Id: Ic64967c6d440ad260b7283a18972b20023320ab6
Reviewed-on: https://go-review.googlesource.com/c/go/+/437976
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Change-Id: I6be77e7b7c919f26bed7b6690cce6741888ba78a
GitHub-Last-Rev: 4ef4a7b425
GitHub-Pull-Request: golang/go#56051
Reviewed-on: https://go-review.googlesource.com/c/go/+/438991
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Set a 1MiB limit on special file blocks (PAX headers, GNU long names,
GNU link names), to avoid reading arbitrarily large amounts of data
into memory.
Thanks to Adam Korczynski (ADA Logics) and OSS-Fuzz for reporting
this issue.
Fixes CVE-2022-2879
For #54853
Change-Id: I85136d6ff1e0af101a112190e027987ab4335680
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1565555
Reviewed-by: Tatiana Bradley <tatianabradley@google.com>
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/439355
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Roland Shoemaker <roland@golang.org>
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Set a 128 MB limit on the amount of space used by []syntax.Inst
in the compiled form corresponding to a given regexp.
Also set a 128 MB limit on the rune storage in the *syntax.Regexp
tree itself.
Thanks to Adam Korczynski (ADA Logics) and OSS-Fuzz for reporting this issue.
Fixes CVE-2022-41715.
Fixes#55949.
Change-Id: Ia656baed81564436368cf950e1c5409752f28e1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/439356
Auto-Submit: Roland Shoemaker <roland@golang.org>
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We were saving non-go file information in the module index files,
leading in an unnecessary increase in memory usage in modules
containing many non-go files. This was a bug because this information
is never used. Don't save that information.
For #54226
Change-Id: I0644064f83f96e3a9f43b7e66ca94d69d9603376
Reviewed-on: https://go-review.googlesource.com/c/go/+/439118
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Use shorter more Go-like names for the new APIs being added in the
runtime/coverage package for writing coverage data under user control
from server programs. Old names were a bit too clunky/verbose.
Updates #51430.
Change-Id: Ifdd5b882a88613c7c4342b40ed93b58547483c77
Reviewed-on: https://go-review.googlesource.com/c/go/+/438503
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Than McIntosh <thanm@google.com>
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The traceback code has special "jump stack" logic, to trace back
stack switches through systemstack. If we're at the entry of
systemstack, the stack switch hasn't happened, so don't jump to
user stack.
The jump stack logic is only used if we're on the g0 stack. It can
happen that we're at the entry of a recursive systemstack call on
the g0 stack. In we jump stack here, there will be two problems:
1. There are frames between entering the g0 stack and this
recursive systemstack call. Those frames will be lost.
2. Worse, we switched frame.sp but frame.fp calculation will use
the entry SP delta (0), which will be wrong, which in turn
leads wrong frame.lr and things will go off.
For now, don't jump stack if we're at entry of systemstack (SP
delta is 0).
Using a per-PC SPWRITE marker may be a better fix. If we haven't
written the SP, we haven't switched the stack so we can just
unwind like a normal function.
May fix#55851.
Change-Id: I2b624c8c086b235b34d9c7d3cebd4a37264f00f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/437299
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On Mac OS X, the default stack size for non-main threads created by cgo is
fixed at 512KB and cannot be altered by setrlimit. This stack size is too
small for some recursive scenarios. We can solve this problem by explicitly
copying the stack size of the main thread when creating a new thread.
Change-Id: I400d5b2e929a1ee261502914a991e208759f64a8
GitHub-Last-Rev: b29c74599e
GitHub-Pull-Request: golang/go#53667
Reviewed-on: https://go-review.googlesource.com/c/go/+/415915
Run-TryBot: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Indirect branches are much more expensive than direct. If the call is
known to be local, we can replace most of the operations with a nop,
and call directly.
Updates #53345
Change-Id: Icfff9ec1f6c7f8e4181f0f28976033308d2f53eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/412715
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Also make error recovery slightly more robust in this case.
Fixes#56022.
Change-Id: I1c01c1465adb48c71367d037b6f0e3fe56f68ec9
Reviewed-on: https://go-review.googlesource.com/c/go/+/438540
Run-TryBot: Robert Griesemer <gri@google.com>
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asn1 allocates due to reflect.TypeOf(new(big.Int)) in init time.
We could replace it with (*big.Int)(nil).
Before:
init encoding/asn1 @1.0 ms, 0.009 ms clock, 224 bytes, 7 allocs
After:
init encoding/asn1 @0.70 ms, 0.002 ms clock, 192 bytes, 6 allocs
Fixes#55973
Change-Id: I7c3cc0f48631af73cf34ad3c731c380f46c72359
Reviewed-on: https://go-review.googlesource.com/c/go/+/435257
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Imagine that initFuncTypes is called with n=3, funcTypes will be
[nil, nil, nil, **reflect.rtype] afterward, then it's called with n=2.
The current implementation will copy funcTypes because funcTypes[2] is
nil. This is unnecessary. It should make a new slice and copy funcTypes
into it only when n >= len(funcTypes).
Updates #56011.
Change-Id: Ia093d2f550d6924a4c58bcd21325093e32b40baa
GitHub-Last-Rev: a599eae7c2
GitHub-Pull-Request: golang/go#56024
Reviewed-on: https://go-review.googlesource.com/c/go/+/438395
Auto-Submit: Ian Lance Taylor <iant@google.com>
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This reverts CL 437176.
Reason for revert: broke programs that plumb StdoutPipe from one command to Stdin on another and then call Wait on the former.
os/exec itself uses a type-assertion to *os.File to determine whether to copy stdin using a goroutine or just pass a file descriptor. An early Wait using a *os.File is benign (because closing the pipe doesn't close the child's inherited file descriptor), but an early Wait using a non-*os.File is not.
Updates #50436.
Change-Id: I4a2993e290982834f91696d890dfe77364c0cc50
Reviewed-on: https://go-review.googlesource.com/c/go/+/438695
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[Roll-forward of CL 436915 by Tobias Klauser, with builtin and gen
directories dropped now that they've been handled separately.]
The minimum bootstrap version for Go ≥ 1.20 is Go 1.17. That version
supports the new style //go:build lines. Thus the old style //+build
lines can be dropped in this part of the tree as well. Leave the
//+build lines in cmd/dist which will ensure the minimum Go version
during bootstrap.
As suggested by Cherry during review of CL 430496
For #44505
Change-Id: Ifa686656c3e50bf7f92f70747b44d74a7d51bad8
Reviewed-on: https://go-review.googlesource.com/c/go/+/435473
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These two directories are full of //go:build ignore files.
We can ignore them more easily by putting an underscore
at the start of the name. That also works around a bug
in Go 1.17 that was not fixed until Go 1.17.3.
Change-Id: Ia5389b65c79b1e6d08e4fef374d335d776d44ead
Reviewed-on: https://go-review.googlesource.com/c/go/+/435472
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Use internal/syssup.RaceDetectorSupported in the exit hooks tests as a
better way to tell if the race detector is available.
Change-Id: I8f43f93319f68b9910f2eea88fc375f7ef3bb2e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/438476
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Read counters using atomic ops so as to avoid problems with the race
detector if a goroutine happens to still be executing at the end of a
test run when we're writing out counter data. In theory we could guard
the atomic use on the counter mode, but it's better just to do it in
all cases, leaves us with a simpler implementation.
Fixes#56006.
Change-Id: I81c2234b5a1c3b00cff6c77daf2c2315451b7f6c
Reviewed-on: https://go-review.googlesource.com/c/go/+/438256
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Separate out the functions from cmd/internal/sys/support.go and
migrate them to a new package internal/platform, so that functions such as
"RaceDetectorSupported" can be called from tests in std as well as in
cmd. This isn't a complete move of everything in cmd/internal/sys;
there are still many functions left.
The original version of this CL (patch set 1) called the new package
"internal/sys", but for packages that needed both "internal/sys" and
"cmd/internal/sys" the import of the former had to be done with a
different name, which was confusing and also required a hack in
cmd/dist.
Updates #56006.
Change-Id: I866d62e75adbf3a640a06e2c7386a6e9e2a18d91
Reviewed-on: https://go-review.googlesource.com/c/go/+/438475
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It was accidentally removed in CL 355451.
Change-Id: I818ea01b83e437c25829bf7e88c7180963e696f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/438615
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Update the minimum version required for asan to be gcc9.
This will ensure that go build -asan is supported only on
systems with the required version of gcc. Update the asan
error message to include the name of the compiler (the
error message is updated to include the name of the compiler
instead of C compiler for other platforms as well).
Related to CL 425355
Change-Id: Ib864d43b2b3028f39ffcf792890a678361f507f6
Reviewed-on: https://go-review.googlesource.com/c/go/+/436740
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SecCreatePolicySSL returns null when called from a binary that has a
strange path. This seems to be a weirdo macos bug, but we should be
properly handling those null returns anyway. Also add handling for
SecTrustGetCertificateAtIndex.
Fixes#54590
Change-Id: I251e74f3b0bf65890a80b094b3e88718e13fd3db
Reviewed-on: https://go-review.googlesource.com/c/go/+/438135
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CL 424034 introduced two new packages that trigger external
linking mode where internal linking mode is sufficient.
Change-Id: I81583210331fe4151d631b5efd7fc5d3c8f11f39
Reviewed-on: https://go-review.googlesource.com/c/go/+/435256
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When decoding a struct, if a positive delta is large enough to overflow
when added to fieldnum, we would panic due to the resulting negative index.
Instead, catch this problem and produce an error like we do with
negative delta integers. If fieldnum ends up being negative or smaller
than state.fieldnum, the addition overflowed.
While here, remove an unnecessary break after an error call,
since those error functions cause a panic.
Fixes#55337.
Change-Id: I7a0e4f43e5c81a703e79c1597e3bb3714cc832c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/432715
Reviewed-by: Rob Pike <r@golang.org>
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Reviewed-by: Bryan Mills <bcmills@google.com>
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CL 425314 made creating funcTypes using StructOf, and using a mutex to
protect read+write to funcTypes. However, after initializing funcTypes,
it is accessed in FuncOf without holding lock, causing a race.
Fixing it by returning the n-th Type directly from initFuncTypes, so the
accessing funcTypes will always be guarded by a mutex.
Fixes#56011
Change-Id: I1b50d1ae342943f16f368b8606f2614076dc90fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/437997
Reviewed-by: Keith Randall <khr@google.com>
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Change-Id: I4686f36a8f718fea1a08d816bc14e24e3528bb07
Reviewed-on: https://go-review.googlesource.com/c/go/+/436706
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In TestCoverageApis/emitToNonexistentDir there is a list of error
messages to match when a nonexistent directory is opened. The list
has message text only for Unix and Windows. Add the corresponding
text for Plan 9.
Fixes#55983
Change-Id: Id32130300cb02394b319e1aeb1229ee147b4afb2
Reviewed-on: https://go-review.googlesource.com/c/go/+/437557
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The offset of the line info should be smaller than the file size.
Otherwise, it should be ignored.
Before the change, such an invalid line info won't be ignored when it's
the first one to add.
Change-Id: Id17492a8de97f277a49a59fae0070efeec40b2f9
GitHub-Last-Rev: 4d61d73c3a
GitHub-Pull-Request: golang/go#48456
Reviewed-on: https://go-review.googlesource.com/c/go/+/350741
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Zeke Lu <lvzecai@gmail.com>
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Change-Id: I192dd34c677e52e16f0ef78e1dae58a78f6d1aac
GitHub-Last-Rev: 1638a74689
GitHub-Pull-Request: golang/go#55967
Reviewed-on: https://go-review.googlesource.com/c/go/+/436885
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Otherwise DirFS of a UNC path does not work.
Fixes#54694
Change-Id: I82c1c436f7c26b3935c2cc4fd238daf094fc4d86
Reviewed-on: https://go-review.googlesource.com/c/go/+/426094
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Auto-Submit: Ian Lance Taylor <iant@google.com>
Change-Id: Ifaa73b64e5b6a1d37c753e2440b642478d7dfbce
Reviewed-on: https://go-review.googlesource.com/c/go/+/436957
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Change-Id: Iae290216687fd1ce8be720600157fb78cc2446d0
GitHub-Last-Rev: 4fba64ecb1
GitHub-Pull-Request: golang/go#55959
Reviewed-on: https://go-review.googlesource.com/c/go/+/436881
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The flag is now removed from `go build` and `go test`.
It has been deprecated since Go 1.16, printing a warning message.
The idea was to fully delete it in Go 1.17, but that didn't happen.
First, delete the BuildI variable and its flag declarations,
as well as all the bits of docs that mentioned the flag.
Second, delete or simplify the code paths that used BuildI.
Third, adapt the tests to the removed flag.
Some of them are removed, like test_relative_import_dash_i.txt and
TestGoTestDashIDashOWritesBinary, as they centered around the flag.
The rest are modified to not cover or use the flag.
Finally, change cmd/dist to no longer use `go install -i`.
The purpose of the flag was that, when bootstrapping the toolchain,
all of its dependencies would also be installed as object files.
When removing the use of the -i flags, the checkNotStale call right
after building toolchain3 would fail as expected,
because runtime/internal/sys is now only up to date in the build cache.
Luckily, that's not a problem: we run `go install std cmd` right after,
so all standard library packages will be installed as object files.
Move the checkNotStale call after that install command.
Fixes#41696.
Change-Id: I5d8139f18aaee07da886d483e663f3f2f00d5f3a
Reviewed-on: https://go-review.googlesource.com/c/go/+/416094
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gopher Robot <gobot@golang.org>
Updates #53466
Change-Id: I6643b4254dc707351d397018cee485bb508dde94
Reviewed-on: https://go-review.googlesource.com/c/go/+/431659
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Joel Sing <joel@sing.id.au>
Reviewed-by: Dmitri Goutnik <dgoutnik@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
It's all local to a single file and responsible for 1.7% of total
space allocated summed over compilation of the bent benchmarks.
Showing nodes accounting for 27.16GB, 27.04% of 100.44GB total
Dropped 1622 nodes (cum <= 0.50GB)
Showing top 10 nodes out of 321
flat flat% sum% cum cum%
4.87GB 4.85% 4.85% 4.87GB 4.85% cmd/compile/internal/objw.init
4.79GB 4.77% 9.62% 4.81GB 4.79% runtime.allocm
4.72GB 4.70% 14.32% 4.72GB 4.70% cmd/compile/internal/types.newType
3.10GB 3.09% 17.41% 3.17GB 3.15% cmd/compile/internal/ssagen.InitConfig
1.86GB 1.85% 19.26% 2.61GB 2.60% cmd/compile/internal/ssa.cse
1.72GB 1.71% 20.97% 2.25GB 2.24% cmd/internal/obj.(*Link).traverseFuncAux
1.66GB 1.65% 22.62% 1.66GB 1.65% runtime.malg
1.61GB 1.61% 24.23% 1.64GB 1.63% cmd/compile/internal/ssa.schedule
1.42GB 1.41% 25.64% 1.42GB 1.41% cmd/compile/internal/ir.NewNameAt
Change-Id: Id18ee3b83cb23a7042d59714a0c1ca074e7bc7a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/437297
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: David Chase <drchase@google.com>
