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Russ Cox f7142206e9 cmd/go: use build cache for tests when GOCACHE is unset
Before this CL, if you had GOCACHE=/some/dir, then the cmd/go tests used it.
But if you were relying on the implicit behavior that GOCACHE being empty
meant an appropriate system-specific cache directory, then the cmd/go tests
ran with no cache at all, which makes them about 4X slower.

During all.bash GOCACHE is set to a fresh temporary directory and is therefore
already getting proper caching; this CL mainly helps people running 'go test cmd/go'
by hand.

Change-Id: I7c322ca79b877c1d0a3b448b95d5354fbfcba7f8
Reviewed-on: https://go-review.googlesource.com/118320
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2018-06-12 20:31:40 +00:00
.github .github: use HTTPS for Stack Overflow link in SUPPORT.md 2018-06-12 11:08:14 +00:00
api syscall: update TOKEN_ALL_ACCESS according to WinNT.h 2018-06-11 00:45:20 +00:00
doc doc/go1.11: first draft of release notes 2018-06-12 17:39:28 +00:00
lib/time lib/time: update vendored tzdata to release 2018e 2018-06-11 14:47:06 +00:00
misc runtime: restore r2 when restoring state from gobuf in gogo on ppc64x 2018-06-11 12:13:11 +00:00
src cmd/go: use build cache for tests when GOCACHE is unset 2018-06-12 20:31:40 +00:00
test test: add test to verify that string copies don't get optimized away 2018-06-12 19:10:34 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: update email address 2018-04-14 19:28:37 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS C: add Iskander Sharipov's individual CLA mail 2018-04-16 04:49:46 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
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