commit bf0756f3e40d51bf1193549f3b069f39d93551f7
author Mitch Phillips <31459023+hctim@users.noreply.github.com> Mon May 24 16:08:57 2021 -0700
committer Copybara-Service <copybara-worker@google.com> Tue May 25 19:11:40 2021 -0700
tree c736deee3845cc9e711a5778984690de8bbfed36
parent 8b4ce2e00e94c6ff5a71a385a7d86eb6528d5b68

[scudo] Add unmapTestOnly() to secondary.

When trying to track down a vaddr-poisoning bug, I found that that the
secondary cache isn't emptied on test teardown. We should probably do
that to make the tests hermetic. Otherwise, repeating the tests lots of
times using --gtest_repeat fails after the mmap vaddr space is
exhausted.

To repro:
$ ninja check-scudo_standalone # build
$ ./projects/compiler-rt/lib/scudo/standalone/tests/ScudoUnitTest-x86_64-Test \
--gtest_filter=ScudoSecondaryTest.*:-ScudoSecondaryTest.SecondaryCombinations \
--gtest_repeat=10000

Reviewed By: cryptoad

Differential Revision: https://reviews.llvm.org/D102874

GitOrigin-RevId: 1fb6a0307240b0c543ec5babb35e39db2c39052b