http://llvm.org/bugs/show_bug.cgi?id=22741
Bug ID: 22741
Summary: ASAN on ARM fails on fast unwind
Product: compiler-rt
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: compiler-rt
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 13964
--> http://llvm.org/bugs/attachment.cgi?id=13964&action=edit
stack traces: stage1, stage2, no-fast-unwind
When walking the stack, ASAN fails to get the proper frames on ARM. On stage1
(GCC compiled ASAN), the stack unwinds with the right size (three), but the
addresses are bogus. On stage2 (Clang's), the stack doesn't even have the right
size and all you can see is the current frame.
When using ASAN_OPTIONS=fast_unwind_on_malloc=0, the stack is correctly
unwounded (correct.out attached).
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