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os: handle TMPDIR in TempDir on Plan 9

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CL 129063 added a test in TestScript/mod_enabled,
which was failing on Plan 9.

The test was failing because the Init function
of the cmd/go/internal/modload package was
expecting ModRoot to be part of os.TempDir.

However, ModRoot was set to TMPDIR, while
os.TempDir is returning /tmp on Plan 9.

This change fixes the implementation of
os.TempDir on Plan 9 to handle the TMPDIR
environment variable, similarly to Unix.

Fixes #27065.

Change-Id: Id6ff926c5c379f63cab2dfc378fa6c15293fd453
Reviewed-on: https://go-review.googlesource.com/129775
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
David du Colombier 2018-08-18 00:05:46 +02:00 committed by Brad Fitzpatrick
parent 64fae25286
commit 0a842d5560
1 changed files with 6 additions and 1 deletions
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7
src/os/file_plan9.go
View File

@ -478,7 +478,12 @@ func (f *File) Chown(uid, gid int) error {
}
func tempDir() string {
return "/tmp"
dir := Getenv("TMPDIR")
if dir == "" {
dir = "/tmp"
}
return dir
}
// Chdir changes the current working directory to the file,