The Go programming language
Go to file
Austin Clements f3a302358f [release-branch.go1.24] testing: detect a stopped timer in B.Loop
Currently, if the user stops the timer in a B.Loop benchmark loop, the
benchmark will run until it hits the timeout and fails.

Fix this by detecting that the timer is stopped and failing the
benchmark right away. We avoid making the fast path more expensive for
this check by "poisoning" the B.Loop iteration counter when the timer
is stopped so that it falls back to the slow path, which can check the
timer.

This causes b to escape from B.Loop, which is totally harmless because
it was already definitely heap-allocated. But it causes the
test/inline_testingbloop.go errorcheck test to fail. I don't think the
escape messages actually mattered to that test, they just had to be
matched. To fix this, we drop the debug level to -m=1, since -m=2
prints a lot of extra information for escaping parameters that we
don't want to deal with, and change one error check to allow b to
escape.

Fixes #72974.

Change-Id: I7d4abbb1ec1e096685514536f91ba0d581cca6b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/659657
Auto-Submit: Austin Clements <austin@google.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/660558
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
2025-03-26 09:44:03 -07:00
.github .github: update language change proposal template 2024-08-08 19:02:29 +00:00
api debug/elf: adjust version API per issue discussion 2024-12-17 13:28:29 -08:00
doc [release-branch.go1.24] doc/godebug: mention GODEBUG=fips140 2025-02-19 13:59:08 -08:00
lib lib/fips140: freeze v1.0.0 FIPS 140 module zip file 2025-01-29 07:10:35 -08:00
misc misc/wasm: move wasm runtime files to lib/wasm 2024-08-30 19:15:21 +00:00
src [release-branch.go1.24] testing: detect a stopped timer in B.Loop 2025-03-26 09:44:03 -07:00
test [release-branch.go1.24] testing: detect a stopped timer in B.Loop 2025-03-26 09:44:03 -07:00
.gitattributes
.gitignore runtime,internal: move runtime/internal/sys to internal/runtime/sys 2024-07-23 19:05:35 +00:00
CONTRIBUTING.md
LICENSE LICENSE: update per Google Legal 2024-08-09 14:54:31 +00:00
PATENTS
README.md
SECURITY.md
VERSION [release-branch.go1.24] go1.24.1 2025-03-04 11:27:08 -08:00
codereview.cfg [release-branch.go1.24] update codereview.cfg for release-branch.go1.24 2024-12-06 21:58:36 +00:00
go.env

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 4.0 Attribution license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

Binary Distributions

Official binary distributions are available at https://go.dev/dl/.

After downloading a binary release, visit https://go.dev/doc/install for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://go.dev/doc/install/source for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://go.dev/wiki/Questions for a list of places to ask questions about the Go language.