diff --git a/compiler-rt/lib/tsan/rtl/tsan_rtl_report.cc b/compiler-rt/lib/tsan/rtl/tsan_rtl_report.cc index cd82af4f66a6..ac89830bef66 100644 --- a/compiler-rt/lib/tsan/rtl/tsan_rtl_report.cc +++ b/compiler-rt/lib/tsan/rtl/tsan_rtl_report.cc @@ -680,6 +680,14 @@ void PrintCurrentStack(ThreadState *thr, uptr pc) { PrintStack(SymbolizeStack(trace)); } +// Always inlining PrintCurrentStackSlow, because LocatePcInTrace assumes +// __sanitizer_print_stack_trace exists in the actual unwinded stack, but +// tail-call to PrintCurrentStackSlow breaks this assumption because +// __sanitizer_print_stack_trace disappears after tail-call. +// However, this solution is not reliable enough, please see dvyukov's comment +// http://reviews.llvm.org/D19148#406208 +// Also see PR27280 comment 2 and 3 for breaking examples and analysis. +ALWAYS_INLINE void PrintCurrentStackSlow(uptr pc) { #ifndef SANITIZER_GO BufferedStackTrace *ptrace =