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cmd/go/internal/modget: synchronize writes to modOnly map in runGet

Fixes #35317

Change-Id: Id858a25dc16a1bbff1802d25bcd4aca31c1133bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/205067
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
This commit is contained in:
Bryan C. Mills 2019-11-03 23:40:44 -05:00
parent f07cbc7f88
commit 7e71c9c3ed
2 changed files with 11 additions and 0 deletions

View File

@ -454,6 +454,7 @@ func runGet(cmd *base.Command, args []string) {
// This includes explicitly requested modules that don't have a root package
// and modules with a target version of "none".
var wg sync.WaitGroup
var modOnlyMu sync.Mutex
modOnly := make(map[string]*query)
for _, q := range queries {
if q.m.Version == "none" {
@ -466,7 +467,9 @@ func runGet(cmd *base.Command, args []string) {
if hasPkg, err := modload.ModuleHasRootPackage(q.m); err != nil {
base.Errorf("go get: %v", err)
} else if !hasPkg {
modOnlyMu.Lock()
modOnly[q.m.Path] = q
modOnlyMu.Unlock()
}
wg.Done()
}(q)

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@ -0,0 +1,8 @@
# Regression test for golang.org/issue/35317:
# 'go get' with multiple module-only arguments was racy.
env GO111MODULE=on
[short] skip
go mod init example.com
go get golang.org/x/text@v0.3.0 golang.org/x/internal@v0.1.0