go get golang.org/x/tools@74c255b # CL 519295
go mod tidy
go mod vendor
Pulling in the fix for unnecessary dependency on *types.StdSizes, which
is non guaranteed behavior.
Updates #61035
Change-Id: Ifb04bab060343b6a849980db6bb65da9889b4665
Reviewed-on: https://go-review.googlesource.com/c/go/+/520435
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This CL introduces a locAttr bitset type, which will make it easier to
add additional attributes in the near future.
Change-Id: I2689aa623097279dc1e7b7cf2adf5184d710c5a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/520258
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I want to add more location properties (e.g., to track indirect stores
and calls), and it's easier to reason about them if they're all
consistent that "true" means more consequences than less.
Change-Id: I3f8674bb11877ba33082a0f5f7d8e55ad6d7a4cc
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Discarded values never persist, so they can be transiently allocated
too.
Change-Id: I036ce0c1eea45e437142497bb7df3ecb44b56e52
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The pprof mutex profile was meant to match the Google C++ (now Abseil)
mutex profiler, originally designed and implemented by Mike Burrows.
When we worked on the Go version, pjw and I missed that C++ counts the
time each thread is blocked, even if multiple threads are blocked on a
mutex. That is, if 100 threads are blocked on the same mutex for the
same 10ms, that still counts as 1000ms of contention in C++. In Go, to
date, /debug/pprof/mutex has counted that as only 10ms of contention.
If 100 goroutines are blocked on one mutex and only 1 goroutine is
blocked on another mutex, we probably do want to see the first mutex
as being more contended, so the Abseil approach is the more useful one.
This CL adopts "contention scales with number of goroutines blocked",
to better match Abseil [1]. However, it still makes sure to attribute the
time to the unlock that caused the backup, not subsequent innocent
unlocks that were affected by the congestion. In this way it still gives
more accurate profiles than Abseil does.
[1] https://github.com/abseil/abseil-cpp/blob/lts_2023_01_25/absl/synchronization/mutex.cc#L2390Fixes#61015.
Change-Id: I7eb9e706867ffa8c0abb5b26a1b448f6eba49331
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With #61035 fixed, types2.Sizes matches the compiler behavior, so use its
Sizes implementation instead of rolling our own copy.
Updates #61035
Change-Id: I7b9efd27a01f729a04c79cd6b4ee5f417fe6e664
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Change-Id: Ic4fcfe7335dab219790c19ded3bbb7265857404f
GitHub-Last-Rev: afc69c79b2
GitHub-Pull-Request: golang/go#62062
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The syscall package isn't getting new system call support,
but it is not deprecated.
Fixes#60797
Change-Id: I33b60269f9ce70ac2108fa0f3d42fd87a3076bf1
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ld-prime emits a deprecation warning for -bind_at_load. The flag
is needed for plugins to not deadlock (#38824) when linking with
older darwin linker. It is supposedly not needed with newer linker
when chained fixups are used. For now, we always pass it, and
suppress the warning.
For #61229.
Change-Id: I4b8a6f864a460c40dc38adbb533f664f7fd5343c
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These operations misbehave and cause hangs and flakes.
Fail hard if they are attempted.
Tested by backing out the Darwin-profiling-hang fix
CL 518836 and running run.bash, the guard panicked in
runtime/pprof tests, as expected/hoped.
Updates #61768
Change-Id: I89b6f85745fbaa2245141ea98f584afc5d6b133e
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Adjust some rewrite code to match current code base.
Change-Id: I7d3b79b764b95d664dd95e1057725f15a94973d6
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Add runtime support for range over functions, specifically
for defer in the loop body. The defer is running in one
function but needs to append to the deferred function list
for a parent function. This CL implements the runtime
support for that, in the form of two new functions:
deferrangefunc, which obtains a token representing the
current frame, and deferprocat, which is like deferproc
but adds to the list for frame denoted by the token.
Preparation for proposal #61405. The actual logic in the
compiler will be guarded by a GOEXPERIMENT; this code
will only run if the compiler emits calls to deferprocat.
Change-Id: I08adf359100856d21d7ff4b493afa229c9471e70
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syscall.Unshare is the sort of system call that may be blocked in a
container environment, and experience has shown that different
container implementations choose from a variety of different error
codes for blocked syscalls.
In particular, the patch in
https://git.alpinelinux.org/aports/tree/community/go/tests-unshare-enosys.patch
seems to suggest that the container environment used to test the Go
distribution on Alpine Linux returns ENOSYS instead of EPERM.
The existing testenv.SyscallIsNotSupported helper checks for
the kinds of error codes we have seen from containers in practice, so
let's use that here.
For #62053.
Updates #29366.
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I don't understand the rationale given in
https://git.alpinelinux.org/aports/commit/community/go/tests-unset-GCCGO.patch?id=a10e9a5e48507198e26a8cf19709e4059da4c79f,
but I suspect that it may be working around test failures when
cross-compiling, since we have a lot of other gccgo tests that need to
skip in that circumstance.
Alternatively, that may just be a stale patch working around #53815.
I can't fine any issue filed against the Go project for this patch,
so it's hard to be sure.
Either way, adding this skip should make the test more robust.
For #62053.
Change-Id: I44dbe9a5a24c0e2d3f22fbe6ca995160a36b2606
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This is subtle and the compiler and runtime be in sync.
It is easier to develop the rest of the changes (especially when using
toolstash save/restore) if this change is separated out and done first.
Preparation for proposal #61405. The actual logic in the
compiler will be guarded by a GOEXPERIMENT, but it is
easier not to have GOEXPERIMENT-specific data structures
in the runtime, so just make the field always.
Change-Id: I7ec7049b99ae98bf0db365d42966baeec56e3774
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Most of the code is not necessary anymore.
Before we start changing how range works,
delete this code so it won't need updating.
Preparation for proposal #61405.
Change-Id: Ia6c6cc62b156e38a871279350a2e60c189967cac
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This makes the intrinsic available on 64-bit platforms,
since the runtime cannot import math/bits.
Change-Id: I5296cc6a97d1cb4756ab369d96dc9605df9f8247
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Compact the Regexp.String output. It was only ever intended for debugging,
but there are at least some uses in the wild where regexps are built up
using regexp/syntax and then formatted using the String method.
Compact the output to help that use case. Specifically:
- Compact 2-element character class ranges: [a-b] -> [ab].
- Aggregate flags: (?i:A)(?i:B)*(?i:C)|(?i:D)?(?i:E) -> (?i:AB*C|D?E).
Fixes#57950.
Change-Id: I1161d0e3aa6c3ae5a302677032bb7cd55caae5fb
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This makes cmd/api no longer an importable package.
In CL 453258 I forgot that there was no direct prohibition
on importing packages from cmd - we just rely on the
fact that cmd/* is all package main and everything else
is cmd/internal.
Fixes#62069.
Change-Id: Ifed738d333b40663f85eca8f83025fcea5df89a9
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Delete CheckNested, which was for GOPATH get.
Unexport CheckGOVCS, which was only exported for GOPATH get.
Change-Id: I6d3f772bfea70f4a3ec197d48b74c3d6d58bcdce
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For aggregate-typed arguments passed to a call, expandCalls
decomposed them into parts in the same block where the value
was created. This is not necessarily the call block, and in
the case where stores are involved, can change the memory
leaving that block, and getting that right is problematic.
Instead, do all the expanding in the same block as the call,
which avoids the problems of (1) not being able to reorder
loads/stores across a block boundary to conform to memory
order and (2) (incorrectly, not) exposing the new memory to
consumers in other blocks. Putting it all in the same block
as the call allows reordering, and the call creates its own
new memory (which is already dealt with correctly).
Fixes#61992.
Change-Id: Icc7918f0d2dd3c480cc7f496cdcd78edeca7f297
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Some file systems do not support file IDs. We should not use
FILE_ID_BOTH_DIR_INFO when reading directories on these file systems,
as it will fail. Instead, we should use FILE_ID_FULL_DIR_INFO,
which doesn't require file ID support.
Fixes#61907Fixes#61918
Change-Id: I83d0a898f8eb254dffe5b8fc68a4ca4ef21c0d85
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This kind of worked, kind of didn't, but by now no one is running into
those configs anymore during "go mod init", the code is complex,
and the tests are slow. Not worth the trouble of maintaining anymore.
Change-Id: I02d4188d531c68334d17b2462bafec4c5dd49777
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We've decided to keep basic GOPATH mode running
for trees that already exist, but GOPATH-mode get is
being removed. It is old and not useful and probably
full of security holes. See #60915 for more details.
Fixes#60915.
Change-Id: I9db4c445579bf0b79f6543624602652555b66c1d
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Change-Id: Iaa1751c6ac0df9d5b2cb74efb16996f4eaea0503
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Fixes#43183.
Change-Id: I50d99ef8ed513bba47166a25ea5c7c80cd8bd799
GitHub-Last-Rev: 684d70e9a3
GitHub-Pull-Request: golang/go#61979
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For #60370.
Change-Id: Idae906ec7027be6d95f78bf43f7ce8f9d07e6c00
GitHub-Last-Rev: c645f0cf82
GitHub-Pull-Request: golang/go#62033
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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
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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
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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
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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
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The link was missing the /pkg/ prefix.
Fixes#62034.
Change-Id: I96c43f06621e30241e140948129e90f0bd5f8d13
GitHub-Last-Rev: c1e7413f76
GitHub-Pull-Request: golang/go#62040
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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
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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
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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
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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
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
All openbsd architectures now use the same code, deduplicate accordingly.
Change-Id: I65f1d9bd78c97dbdf552ec95ebba7ec4d04c8d2d
Reviewed-on: https://go-review.googlesource.com/c/go/+/518622
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
All netbsd architectures now use the same code, deduplicate accordingly.
Change-Id: Ieb179fd76885b7af6d388d7f2aee0f9fac6f1264
Reviewed-on: https://go-review.googlesource.com/c/go/+/518621
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Joel Sing <joel@sing.id.au>
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
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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
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: Dmitri Shuralyov <dmitshur@google.com>
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
Run-TryBot: Joel Sing <joel@sing.id.au>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
