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Bryan C. Mills d73d5d9fb0 cmd/go/internal/imports: make Tags and AnyTags safe for concurrent use 
AnyTags turned up as a data race while running 'go test -race cmd/go'.
I'm not sure how long the race has been present.

==================
WARNING: DATA RACE
Read at 0x000001141ec0 by goroutine 8:
  cmd/go/internal/imports.AnyTags()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/imports/tags.go:45 +0x10e
  cmd/go/internal/modload.QueryPattern.func2()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:539 +0x11d
  cmd/go/internal/modload.QueryPattern.func4.1()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:607 +0x3db
  cmd/go/internal/modload.queryPrefixModules.func1()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:677 +0xa7

Previous write at 0x000001141ec0 by goroutine 7:
  cmd/go/internal/imports.AnyTags()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/imports/tags.go:46 +0x26b
  cmd/go/internal/modload.QueryPattern.func2()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:539 +0x11d
  cmd/go/internal/modload.QueryPattern.func4.1()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:607 +0x3db
  cmd/go/internal/modload.queryPrefixModules.func1()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:677 +0xa7

Goroutine 8 (running) created at:
  cmd/go/internal/modload.queryPrefixModules()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:676 +0x284
  cmd/go/internal/modload.QueryPattern.func4()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:624 +0x2e4
  cmd/go/internal/modfetch.TryProxies()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modfetch/proxy.go:220 +0x107
  cmd/go/internal/modload.QueryPattern()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:590 +0x69e
  cmd/go/internal/work.installOutsideModule()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/work/build.go:744 +0x4b0
  cmd/go/internal/work.runInstall()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/work/build.go:556 +0x217
  main.main()
      /usr/local/google/home/bcmills/go/src/cmd/go/main.go:194 +0xb94

Goroutine 7 (finished) created at:
  cmd/go/internal/modload.queryPrefixModules()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:676 +0x284
  cmd/go/internal/modload.QueryPattern.func4()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:624 +0x2e4
  cmd/go/internal/modfetch.TryProxies()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modfetch/proxy.go:220 +0x107
  cmd/go/internal/modload.QueryPattern()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/modload/query.go:590 +0x69e
  cmd/go/internal/work.installOutsideModule()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/work/build.go:744 +0x4b0
  cmd/go/internal/work.runInstall()
      /usr/local/google/home/bcmills/go/src/cmd/go/internal/work/build.go:556 +0x217
  main.main()
      /usr/local/google/home/bcmills/go/src/cmd/go/main.go:194 +0xb94
==================

Change-Id: Id394978fd6ea0c30614caf8f90ee4f8e2d272843
Reviewed-on: https://go-review.googlesource.com/c/go/+/265278
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2020-10-27 15:15:13 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api io/fs: move FileInfo, FileMode, PathError, ErrInvalid, ... from os to io/fs 2020-10-20 02:32:41 +00:00
doc doc/go1.16: document ASLR support for -buildmode=c-shared on windows 2020-10-22 23:00:42 +00:00
lib/time lib/time, time/tzdata: update tz data to 2020d 2020-10-24 21:42:44 +00:00
misc runtime,cmd/cgo: simplify C -> Go call path 2020-10-26 14:50:32 +00:00
src cmd/go/internal/imports: make Tags and AnyTags safe for concurrent use 2020-10-27 15:15:13 +00:00
test cmd/compile: defer lowering OANDNOT until SSA 2020-10-27 03:11:45 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: add Kush Patel (corporate CLA for Hootsuite Inc) 2020-07-08 00:10:44 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS CONTRIBUTORS: update for the Go 1.15 release 2020-08-10 21:51:48 +00:00
favicon.ico
LICENSE
PATENTS
README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
robots.txt
SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00

README.md

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