Change-Id: Iaa1751c6ac0df9d5b2cb74efb16996f4eaea0503
Reviewed-on: https://go-review.googlesource.com/c/go/+/519236
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Fixes#43183.
Change-Id: I50d99ef8ed513bba47166a25ea5c7c80cd8bd799
GitHub-Last-Rev: 684d70e9a3
GitHub-Pull-Request: golang/go#61979
Reviewed-on: https://go-review.googlesource.com/c/go/+/518860
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Rob Pike <r@golang.org>
For #60370.
Change-Id: Idae906ec7027be6d95f78bf43f7ce8f9d07e6c00
GitHub-Last-Rev: c645f0cf82
GitHub-Pull-Request: golang/go#62033
Reviewed-on: https://go-review.googlesource.com/c/go/+/519555
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Auto-Submit: Ian Lance Taylor <iant@google.com>
With no error handler installed, an error leads to an (internal panic
and) immediate abort of type checking. Not all invariants hold up in
this case, but it also doesn't matter.
In Checker.infer, verify result conditions always if an error handler
is installed, but only then.
Fixes#61938.
Change-Id: I4d3d61bbccc696a75639fee5010f5d3cef17e855
Reviewed-on: https://go-review.googlesource.com/c/go/+/519775
Reviewed-by: Robert Findley <rfindley@google.com>
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The existing code was simply wrong: we cannot ever use the result
signature parameter list (rsig.params) if sigParams was adjusted
for variadic functions. If it was adjusted, we always must either
use sigParams or its separately instantiated version.
In the condition "n > 0 && adjusted", the "n > 0" should have
been in either of the respective "if statement" branches.
Simplified the code by merging with the result signature parameter
update.
Fixes#61931.
Change-Id: I5d39bc8bbc4dd85c7c985055d29532b4b176955e
Reviewed-on: https://go-review.googlesource.com/c/go/+/519456
Auto-Submit: Robert Griesemer <gri@google.com>
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This CL extends ir.StaticValue to also work on closure variables.
Also, it extracts the code from escape analysis that's responsible for
determining the static callee of a function. This will be useful when
go/defer statement normalization is moved to typecheck.
Change-Id: I69e1f7fb185658dc9fbfdc69d0f511c84df1d3ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/518959
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Irrespective of whether unification is exact or inexact, method
signatures of interfaces must always match exactly: a type never
satisfies/implements an interface if relevant method signatures
are different (i.e., not identical, possibly after substitution).
Fixes#61879.
Change-Id: I20c0aa28ac86e2edec615b40f2269938e4a96938
Reviewed-on: https://go-review.googlesource.com/c/go/+/519435
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Auto-Submit: Robert Griesemer <gri@google.com>
The link was missing the /pkg/ prefix.
Fixes#62034.
Change-Id: I96c43f06621e30241e140948129e90f0bd5f8d13
GitHub-Last-Rev: c1e7413f76
GitHub-Pull-Request: golang/go#62040
Reviewed-on: https://go-review.googlesource.com/c/go/+/519575
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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CL 511837 added a check for go test -skip Example but it currently
doesn't verify that the example doesn't show up in the command output.
Add such a check.
For #61482
Change-Id: I3a8f82fc137739bf291f39bf7719ff92cfc74f9d
Reviewed-on: https://go-review.googlesource.com/c/go/+/519595
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Pull in the latest published version of github.com/google/pprof
as part of the continuous process of keeping Go's dependencies
up to date. Done with:
go get github.com/google/pprof
go mod tidy
go mod vendor
For #36905.
Change-Id: I2a48e912712bc916c9d749acb1550682f919477e
Reviewed-on: https://go-review.googlesource.com/c/go/+/519657
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When reading an archive, check for the presence of sentinel entries
created by the Go command. These zero-sized marker entries don't contain
any useful symbols, but rather are there to communicate info to the
linker; ignore them during symbol dumping.
Fixes#62036.
Change-Id: Ied017b0c5b92a3cf6fd13bb9c9f3a9664e4f20f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/519635
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Change-Id: I3302cc2f0e03014e9497976e36d1c7a381a2f962
Reviewed-on: https://go-review.googlesource.com/c/go/+/518623
Run-TryBot: Joel Sing <joel@sing.id.au>
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When recovering from a panic, restore the caller's frame pointer before
returning control to the caller. Otherwise, if the function proceeds to
run more deferred calls before returning, the deferred functions will
get invalid frame pointers pointing to an address lower in the stack.
This can cause frame pointer unwinding to crash, such as if an execution
trace event is recorded during the deferred call on architectures which
support frame pointer unwinding.
Fixes#61766
Change-Id: I45f41aedcc397133560164ab520ca638bbd93c4e
Reviewed-on: https://go-review.googlesource.com/c/go/+/516157
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Reviewed-by: Felix Geisendörfer <felix.geisendoerfer@datadoghq.com>
When a goroutine stack is reused on arm64, the spot on the stack where
the "caller's" frame pointer goes for the topmost frame should be
explicitly zeroed. Otherwise, the frame pointer check in adjustframe
with debugCheckBP enabled will fail on the topmost frame of a call stack
the first time a reused stack is grown.
Updates #39524, #58432
Change-Id: Ic1210dc005e3ecdbf9cd5d7b98846566e56df8f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/481636
Reviewed-by: Felix Geisendörfer <felix.geisendoerfer@datadoghq.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
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All openbsd architectures now use the same code, deduplicate accordingly.
Change-Id: I65f1d9bd78c97dbdf552ec95ebba7ec4d04c8d2d
Reviewed-on: https://go-review.googlesource.com/c/go/+/518622
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All netbsd architectures now use the same code, deduplicate accordingly.
Change-Id: Ieb179fd76885b7af6d388d7f2aee0f9fac6f1264
Reviewed-on: https://go-review.googlesource.com/c/go/+/518621
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Reviewed-by: Ian Lance Taylor <iant@google.com>
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Much of the gcc_linux_*.c code is identical and duplicated across
architectures. Consolidate code for 386, arm, loong64, mips* and
riscv64, where the only difference is the build tags (386 also
has some non-functional ordering differences).
Change-Id: I14ee9a4cc6b72e165239d196b68b6343efaddf0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/518620
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Most freebsd architectures now use the same code, deduplicate accordingly.
The arm code differs slightly in that it has a compile time check for
ARM_TP_ADDRESS, however this is written in a way that it can be included
for all architectures.
Change-Id: I7f6032b63521d24d0c3b5e0e08d57e32b4f9ddc4
Reviewed-on: https://go-review.googlesource.com/c/go/+/518619
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This reduces inconsistency with other architectures and will allow
for further code deduplication.
Change-Id: Icf0d02f765546c3193cccaa22c79e632e12d6bba
Reviewed-on: https://go-review.googlesource.com/c/go/+/518616
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Use fatalf consistently on freebsd. Also use it on dragonfly, netbsd
and openbsd.
Change-Id: I8643c0b7bc13c3cb5173209d311d6d297913955b
Reviewed-on: https://go-review.googlesource.com/c/go/+/518615
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For 32 bit equality (Eq32), rather than always zero extending to 64 bits,
sign extend for signed types and zero extend for unsigned types. This makes
no difference to the equality test (via SUB), however it increases the
likelihood of avoiding unnecessary sign or zero extension simply for the
purpose of equality testing.
While here, replace the Neq* rules with (Not (Eq*)) - this makes no
difference to the generated code (as the intermediates get expanded and
eliminated), however it means that changes to the equality rules also
reflect in the inequality rules.
As an example, the following:
lw t0,956(t0)
slli t0,t0,0x20
srli t0,t0,0x20
li t1,1
bne t1,t0,278fc
Becomes:
lw t0,1024(t0)
li t1,1
bne t1,t0,278b0
Removes almost 1000 instructions from the Go binary on riscv64.
Change-Id: Iac60635f494f6db87faa47752bd1cc16e6b5967f
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This fixes a regression from CL 494181.
The traceEnabled function splits the stack and is being
called by reentersyscall that shouldn't call anything
that splits the stack. Same with traceShuttingDown.
Fixes#61975
Change-Id: I5eca0ba74cfa6acb0259e8400b03c2093cd59dd1
GitHub-Last-Rev: 9e55ae9d7c
GitHub-Pull-Request: golang/go#61981
Reviewed-on: https://go-review.googlesource.com/c/go/+/519055
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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hex is in fact immutable, declare it as a const to avoid accidental
modification, also for consistency with other packages.
Change-Id: I99f292e98c82d4c4526e46c9897d154d0c073da5
GitHub-Last-Rev: d2f06965e7
GitHub-Pull-Request: golang/go#62011
Reviewed-on: https://go-review.googlesource.com/c/go/+/519155
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Change-Id: I26be9a9faa27c6c03cf8b9dec5908d8617d61312
Reviewed-on: https://go-review.googlesource.com/c/go/+/518276
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This is encoded similarly to RLDICL, but can clear the least
significant bits.
Likewise, update the auxint encoding of RLDICL to match those
used by the rotate and mask word ssa opcodes for easier usage
within lowering rules. The RLDICL ssa opcode is not used yet.
Change-Id: I42486dd95714a3e8e2f19ab237a6cf3af520c905
Reviewed-on: https://go-review.googlesource.com/c/go/+/515575
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
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The documentation of io.EOF: Read must return EOF itself, not an error
wrapping EOF, because callers will test for EOF using ==.
encoding/json package provides an example "ExampleDecoder" which uses
"err == io.EOF" as well, so I think it's more idiomatic to use == to test for io.EOF.
Change-Id: I8a9f06d655ca63b3ec3e7dbbdfc519a2686980e1
GitHub-Last-Rev: 665929e2a2
GitHub-Pull-Request: golang/go#62012
Reviewed-on: https://go-review.googlesource.com/c/go/+/519156
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This never belonged in escape analysis, but the non-unified generics
frontend didn't use typecheck. That frontend is gone, so now we can
desugar it earlier.
Change-Id: I70f34a851f27fce1133777c5eeca0f549fc60ede
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Keeps the top-level loop in Main slightly cleaner.
Change-Id: I9c8d38d4bbb34d53edc0796893534763e9eef2f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/518957
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Remove these in favor of the explicit *At variants that take a
src.XPos.
Change-Id: I2c095b75e43b58fe31e3e1b15c811a66ac5a0f83
Reviewed-on: https://go-review.googlesource.com/c/go/+/518956
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Instead of having the inliner specially recognize that eq/hash
functions can't be inlined, change the geneq and genhash to mark them
as //go:noinline.
This is a prereq for a subsequent CL that will move more logic for
handling rtypes from package types to package reflectdata.
Change-Id: I091a9ededcc083fe8305cf5443a9af7d3a9053b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/518955
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Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Skip the gotoolchain_net script test if any new-ish GOEXPERIMENT is
set, since it will fail under these circumstances.
Updates #62106.
Change-Id: Idfef8af7246a3fbe6481347872a94fe64bbaed7f
Reviewed-on: https://go-review.googlesource.com/c/go/+/519195
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On Darwin (and assume also on iOS but not sure), notetsleepg
cannot be called in a signal-handling context. Avoid this
by disabling block reads on Darwin.
An alternate approach was to add "sigNote" with a pipe-based
implementation on Darwin, but that ultimately would have required
at least one more linkname between runtime and syscall to avoid
racing with fork and opening the pipe, so, not.
Fixes#61768.
Change-Id: I0e8dd4abf9a606a3ff73fc37c3bd75f55924e07e
Reviewed-on: https://go-review.googlesource.com/c/go/+/518836
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Relocate the definitions in cmddefs.go (used by the compiler and
the cover tool) to a separate package "covcmd". No change
in functionality, this is a pure refactoring, in preparation
for a subsequent change that will require updating the
imports for the package.
Change-Id: Ic1d277c94d9a574de0a11ec5ed77e892302b9a47
Reviewed-on: https://go-review.googlesource.com/c/go/+/517696
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Most architectures have a crosscall1 function that takes a function
pointer, a setg_gcc function pointer and a g pointer. However,
crosscall_386 only takes a function pointer and the call to setg_gcc
is performed in the thread entry function.
Rename crosscall_386 to crosscall1 for consistency with other
architectures, as well as standardising the API - while not strictly
necessary, it will allow for further deduplication as the calling
code becomes more consistent.
Change-Id: I77cf42e1e15e0a4c5802359849a849c32cebd92f
Reviewed-on: https://go-review.googlesource.com/c/go/+/518618
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This reduces inconsistency with other architectures and will allow
for further code deduplication.
Change-Id: I5becbf29af2ef714974b5e338f869281f2b4de8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/518617
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
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The Content-Length must be a valid numeric value, empty values should not be accepted.
See: https://www.rfc-editor.org/rfc/rfc9110.html#name-content-lengthFixes#61679
Change-Id: Icbcd933087fe5e50199b62ff34c58bf92a09d3d4
GitHub-Last-Rev: 932e46b55b
GitHub-Pull-Request: golang/go#61865
Reviewed-on: https://go-review.googlesource.com/c/go/+/517336
Reviewed-by: Damien Neil <dneil@google.com>
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This CL removes a bunch of obsolete code, which made the overall
possible data flow of the compiler much harder to understand. In
particular, it:
1. Removes typecheck.Declare by inlining its only two remaining uses,
and simplifying them down to just the couple of relevant assignments
for each remaining caller.
2. Renames ir.Package.{Asms,Exports} to {AsmHdrDecls,PluginExports},
respectively, to better describe what they're used for. In particular,
PluginExports now actually holds only the subset of Exports that used
to be confusingly called "ptabs" in package reflectdata.
3. Renames reflectdata.WriteTabs to reflectdata.WritePluginTable, to
make it clearer what it does.
4. Removes the consistency checks on len(Exports) and len(ptabs),
since now it's plainly obvious that only the unified importer ever
appends to PluginExports.
Change-Id: Iedc9d0a4e7648de4e734f7e3e7df302580fed542
Reviewed-on: https://go-review.googlesource.com/c/go/+/518757
Reviewed-by: Keith Randall <khr@google.com>
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KDSA(Compute Digital Signature Authentication) instruction provides
support for the signing and verification of elliptic curves
Change-Id: I19996a307162dd4f476a1cfe4f8d1a74a609e6c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/503215
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Even if a block is empty, we need to keep track of whether the
end-of-block instructions are preemptible.
This CL allows us to not mark the load+compare in instruction
sequences like
CMPL $0, runtime·writeBarrier(SB)
JEQ ...
Before, we had to mark the CMPL as uninterruptible because there
was no way to mark just the JEQ. Now there is, so there is no need
to mark the CMPL itself.
Change-Id: I4c27c0dc211c03b14637d420899cd2c2cccf3493
Reviewed-on: https://go-review.googlesource.com/c/go/+/518539
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
There's no need for separate fixups phases anymore.
Change-Id: Ie30a75bda4d326aa9811db3b3bd1dade0b242706
Reviewed-on: https://go-review.googlesource.com/c/go/+/517858
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
Decls used to contain initializer statement for package-level
variables, but now it only contains ir.Funcs. So we might as well
rename it to Funcs and tighten its type to []*ir.Func.
Similarly, Externs always contains *ir.Names, so its type can be
constrained too.
Change-Id: I85b833e2f83d9d3559ab0ef8ab5d8324f4bc37b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/517855
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This CL moves the early deadcode elimination pass into the unified
writer. This allows shrinking the export data, by simplifying
expressions and removing unreachable statements. It also means we
don't need to repeatedly apply deadcode elimination on inlined calls
or instantiated generics.
Change-Id: I19bdb04861e50815fccdab39790f4aaa076121fd
Reviewed-on: https://go-review.googlesource.com/c/go/+/517775
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
types2 already computes the order that package-level variables need to
be initialized in. Start using it.
Change-Id: Idf2740f963b8146f7c927f57effdbf245f41d355
Reviewed-on: https://go-review.googlesource.com/c/go/+/517617
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Various tools expect tar files to contain entries for directories.
I dropped them when writing cmd/distpack because they're not
strictly necessary and omitting them saves space, but it also
turns out to break some things, so add them back.
We will backport this to release-branch.go1.21 so that Go 1.21.1
will include the directory entries. We can't do anything about
Go 1.21.0 retroactively.
% tar tzvf go1.22rsc1.src.tar.gz | sed 10q
drwxr-xr-x 0 0 0 0 Aug 10 10:07 go/
-rw-r--r-- 0 0 0 1337 Aug 10 10:07 go/CONTRIBUTING.md
-rw-r--r-- 0 0 0 1479 Aug 10 10:07 go/LICENSE
-rw-r--r-- 0 0 0 1303 Aug 10 10:07 go/PATENTS
-rw-r--r-- 0 0 0 1455 Aug 10 10:07 go/README.md
-rw-r--r-- 0 0 0 419 Aug 10 10:07 go/SECURITY.md
-rw-r--r-- 0 0 0 42 Aug 10 10:07 go/VERSION
drwxr-xr-x 0 0 0 0 Aug 10 10:07 go/api/
-rw-r--r-- 0 0 0 1142 Aug 10 10:07 go/api/README
-rw-r--r-- 0 0 0 35424 Aug 10 10:07 go/api/except.txt
% tar tzvf go1.22rsc1.darwin-amd64.tar.gz | sed 10q
drwxr-xr-x 0 0 0 0 Aug 10 10:07 go/
-rw-r--r-- 0 0 0 1337 Aug 10 10:07 go/CONTRIBUTING.md
-rw-r--r-- 0 0 0 1479 Aug 10 10:07 go/LICENSE
-rw-r--r-- 0 0 0 1303 Aug 10 10:07 go/PATENTS
-rw-r--r-- 0 0 0 1455 Aug 10 10:07 go/README.md
-rw-r--r-- 0 0 0 419 Aug 10 10:07 go/SECURITY.md
-rw-r--r-- 0 0 0 42 Aug 10 10:07 go/VERSION
drwxr-xr-x 0 0 0 0 Aug 10 10:07 go/api/
-rw-r--r-- 0 0 0 1142 Aug 10 10:07 go/api/README
-rw-r--r-- 0 0 0 35424 Aug 10 10:07 go/api/except.txt
%
Fixes#61862.
Change-Id: Iecd9ba893015295e88715b031b79a104236b9ced
Reviewed-on: https://go-review.googlesource.com/c/go/+/518335
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
