| commit | 2fc7574aab072c697d2d020fa48347b0c1b221e7 | [log] [tgz] |
|---|---|---|
| author | Bryan C. Mills <bcmills@google.com> | Thu Jul 25 20:26:46 2019 -0400 |
| committer | Bryan C. Mills <bcmills@google.com> | Tue Jul 30 20:16:40 2019 +0000 |
| tree | 8772768cd62effdf47a16c42e2efde4a2c841fec | |
| parent | 8c3040d768e70fd6cf9f992fe4745edbf51bc581 [diff] |
cmd/go/internal/cache: avoid ioutil.WriteFile for writing cache entries ioutil.WriteFile always truncates the destination file to 0 before writing, which is inappropriate for unsynchronized, idempotent, fixed-size files such as the cache entry files here. Instead, truncate the file only after writing it, so that a second write will never (even temporarily!) remove the contents of a preceding write. Fixes #29667 Change-Id: I16a53ce79d8a23d23580511cb6abd062f54b65ef Reviewed-on: https://go-review.googlesource.com/c/go/+/188157 Run-TryBot: Bryan C. Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com>
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