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Russ Cox 29be20a111 cmd/go: invalidate cached test results if env vars or files change
When we write a cached test result, we now also write a log of the
environment variables and files inspected by the test run,
along with a hash of their content. Before reusing a cached test result,
we recompute the hash of the content specified by the log, and only
use the result if that content has not changed.

This makes test caching behave correctly for tests that consult
environment variables or stat or read files or directories.

Fixes #22593.

Change-Id: I8608798e73c90e0c1911a38bf7e03e1232d784dc
Reviewed-on: https://go-review.googlesource.com/81895
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-11 19:08:32 +00:00
.github doc: add a link to the code of conduct 2017-11-13 16:48:04 +00:00
api api: promote next to go1.10 2017-12-07 15:44:34 +00:00
doc doc: update NetBSD status 2017-12-11 06:12:51 +00:00
lib/time lib/time: update tzdata to 2017c 2017-12-06 19:24:15 +00:00
misc cmd/cgo: make JNI's jobject type map to uintptr in Go 2017-12-08 16:13:14 +00:00
src cmd/go: invalidate cached test results if env vars or files change 2017-12-11 19:08:32 +00:00
test cmd/compile: fix unsafe.Pointer liveness for Syscall-like functions 2017-12-08 21:34:24 +00:00
.gitattributes
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: final updates for Go 1.9 2017-07-18 01:47:54 +00:00
CONTRIBUTING.md .github: recommend 'go bug' when filing an issue 2017-07-24 17:18:34 +00:00
CONTRIBUTORS A+C: final updates for Go 1.9 2017-07-18 01:47:54 +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: add attribution for the Gopher image 2017-02-03 19:39:41 +00:00
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