3 Commits

Author	SHA1	Message	Date
Thurston Dang	3ad2cd5e70	[asan] Fix-forward #133175 by restricting newly-added tests to Linux ... This was failing on Mac (https://green.lab.llvm.org/job/llvm.org/job/clang-stage1-RA/4107/ and https://issues.chromium.org/issues/409995888). Since this is an experimental feature, rather than play whack-a-mole with selectively disabling failing platforms (previously done for Android), this patch restricts it to Linux.	2025-04-11 15:09:41 +00:00
Thurston Dang	6c51603e4c	[asan] Temporarily disable new test cases from #133175 on Android ... My patch causes a build breakage on Android (https://lab.llvm.org/buildbot/#/builders/186/builds/8103/steps/21/logs/stdio). I can't easily test on Android, which is not the intended audience for my patch anyway, so temporarily disable the test pending further investigation.	2025-04-10 22:28:01 +00:00
Thurston Dang	721af7e636	[asan] Add experimental 'poison_history_size' flag (#133175) ... This adds an experimental flag that will keep track of where the manual memory poisoning (`__asan_poison_memory_region`) is called from, and print the stack trace if the poisoned region is accessed. (Absent this flag, ASan will tell you what code accessed a poisoned region, but not which code set the poison.) This implementation performs best-effort record keeping using ring buffers, as suggested by Vitaly. The size of each ring buffer is set by the `poison_history_size` flag.	2025-04-10 13:53:54 -07:00