This patch adjusts the fix for
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61771 to extract the last
PC from the stack frame if no valid FP is available for ARM.
2015-10-13 Maxim Ostapenko <m.ostape...@partner.samsung.com>
* sanitizer_common/sanitizer_stacktrace.cc (GetCanonicFrame): Assume we
compiled code with GCC when extracting the caller PC for ARM if no
valid frame pointer is available.
Index: libsanitizer/sanitizer_common/sanitizer_stacktrace.cc
===================================================================
--- libsanitizer/sanitizer_common/sanitizer_stacktrace.cc (revision 250059)
+++ libsanitizer/sanitizer_common/sanitizer_stacktrace.cc (working copy)
@@ -62,8 +62,8 @@
// Nope, this does not look right either. This means the frame after next does
// not have a valid frame pointer, but we can still extract the caller PC.
// Unfortunately, there is no way to decide between GCC and LLVM frame
- // layouts. Assume LLVM.
- return bp_prev;
+ // layouts. Assume GCC.
+ return bp_prev - 1;
#else
return (uhwptr*)bp;
#endif
