tree 13561b377ceead1400d36b606e3712b574fc9d96
parent b8eb61adc92bb384bc63f01b7ccddd931409b223
author Thurston Dang <thurston@google.com> 1754436695 -0700
committer GitHub <noreply@github.com> 1754436695 -0700
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[sanitizer] Don't TestPTrace() if SPARC; don't give up if internal_fork() fails (#152072)

Fixes corner cases of https://github.com/llvm/llvm-project/pull/151406:
- Don't run TestPTrace() on SPARC, because internal_fork() on SPARC
actually calls __fork(). We can't safely __fork(), because it's possible
seccomp has been configured to disallow fork() but allow clone().
- if internal_fork() fails for whatever reason, we shouldn't give up. It
is strictly worse to give up early than to attempt StopTheWorld.

Also updates some comments/TODOs.