This CL documents that unsynchronized send and close operations
on a channel are detected as a race condition.
Fixes#27769
Change-Id: I7495a2d0dd834c3f3b6339f8ca18ea21ae979aa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/219637
Reviewed-by: Rob Pike <r@golang.org>
As far as I can tell, there is no public documentation on this topic,
which cost me several days of debugging.
I am possibly unusual in that I run binaries in production with the
race detector turned on, but I think that others who do the same may
want to be aware of the risk.
Updates #26813.
Updates #37233.
Change-Id: I1f8111bd01d0000596e6057b7cb5ed017d5dc655
Reviewed-on: https://go-review.googlesource.com/c/go/+/220586
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
It was pointed out to me that the thread sanitizer library has many more
flags than the ones documented in this doc page. In particular, I was
able to make use of GORACE=atexit_sleep_ms=10 to reduce the amount that
'go test -race' will sleep before finishing.
I'm sure that this flag will be useful to others in the future, so add
it here. This is still not a complete list, but we can simply add useful
flags that work when we think they deserve a mention.
Change-Id: If199d36fd80a0945af90055d110519e5dba27361
Reviewed-on: https://go-review.googlesource.com/c/go/+/200863
Reviewed-by: Heschi Kreinick <heschi@google.com>
After golang.org/cl/210124, I wondered if the same error had gone
unnoticed elsewhere. I quickly spotted another dozen mistakes after
reading through the output of:
git grep '\<[Aa]n [bcdfgjklmnpqrtvwyz][a-z]'
Many results are false positives for acronyms like "an mtime", since
it's pronounced "an em-time". However, the total amount of output isn't
that large given how simple the grep pattern is.
Change-Id: Iaa2ca69e42f4587a9e3137d6c5ed758887906ca6
Reviewed-on: https://go-review.googlesource.com/c/go/+/210678
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Zach Jones <zachj1@gmail.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
I noticed lots of trailing whitespace in one of cmd/trace's HTML files.
While at it, remove a few others from still-maintained files. Leave old
documents alone, such as doc/devel/weekly.html.
Change-Id: I7de7bbb6dd3fe6403bbb1f1178a8d3640c1e537b
Reviewed-on: https://go-review.googlesource.com/c/go/+/196178
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This moves the paragraph mentioning the use of _ higher up
to emphasize the warning and thereby reducing chances of getting
stuck.
Fixes#22617
Change-Id: I64352a3e966a22d86fc9d381332bade49d74714a
Reviewed-on: https://go-review.googlesource.com/87375
Reviewed-by: Ian Lance Taylor <iant@golang.org>
POSIX Shell only supports = to compare variables inside '[' tests. But
this is Bash, where == is an alias for =. In practice they're the same,
but the current form is inconsisnent and breaks POSIX for no good
reason.
Change-Id: I38fa7a5a90658dc51acc2acd143049e510424ed8
Reviewed-on: https://go-review.googlesource.com/38031
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
When reading along the article, the extra code added in the final
version is not explained. The main function calls flag.Parse(), for
example, which will cause an error, unless the readers looks at the
entirety of final.go to see the import added.
The file shown to the users no longer has the extra flags. The testing
code is now in a patch that gets applied to final.go in order to create
final-test.go. This is the file that will be used to test the code,
matching final.go as much as possible.
Change-Id: I022f5f6c88e107c8ba5623661d74a8d260d05266
Reviewed-on: https://go-review.googlesource.com/11061
Reviewed-by: Andrew Gerrand <adg@golang.org>
This CL adjusts code referring to src/pkg to refer to src.
Immediately after submitting this CL, I will submit
a change doing 'hg mv src/pkg/* src'.
That change will be too large to review with Rietveld
but will contain only the 'hg mv'.
This CL will break the build.
The followup 'hg mv' will fix it.
For more about the move, see golang.org/s/go14nopkg.
LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/134570043
The original test would open a local port and then immediately close it
and use the port number in subsequent tests. Between the port being closed
and reused by the later process, it could be opened by some other program
on the machine.
Changed the test to run the server process directly and have it save the
assigned port to a text file to be used by client processes.
Fixes#5564.
LGTM=adg
R=golang-codereviews, gobot, adg
CC=golang-codereviews
https://golang.org/cl/72290043
This got deleted mistakenly during the content re-org.
Fixes#7275.
LGTM=dvyukov
R=golang-codereviews, minux.ma, dvyukov
CC=golang-codereviews
https://golang.org/cl/60850043
Remove "References" section.
Remove most articles and redirect to blog.golang.org.
Move /ref/spec and /ref/mem to /doc/spec and /doc/mem.
Remove duplicate links from the remaining
"Documents", "The Project", and "Help" pages.
Defer to the wiki for more links and community content.
Update command reference and mention cover tool.
Add "Pop-out" text to the front page.
Pick one of four videos at random to feature on the front page.
Fixes#2547.
Fixes#5561.
Fixes#6321.
R=r, dominik.honnef
CC=golang-dev
https://golang.org/cl/13724043
Also:
- put GORACE into the go env command
- do minor housekeeping on the race detector article
Fixes#4995.
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/8319044
The Camlistore code tree rearranged after the go tool came
out. (I didn't know this link was here until I saw it in
some logs.)
R=adg
CC=golang-dev
https://golang.org/cl/7374043
