[tsan] Fix signals and setjmp/longjmp on OS X

1) There's a few wrongly defined things in tsan_interceptors.cc,
2) a typo in tsan_rtl_amd64.S which calls setjmp instead of sigsetjmp in the interceptor, and
3) on OS X, accessing an mprotected page results in a SIGBUS (and not SIGSEGV).

Differential Revision: http://reviews.llvm.org/D15052



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@254299 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 1 deletions

diff --git a/test/tsan/signal_longjmp.cc b/test/tsan/signal_longjmp.cc
index 2525c8988..bc8b0dfc4 100644
--- a/test/tsan/signal_longjmp.cc
+++ b/test/tsan/signal_longjmp.cc
@@ -12,6 +12,12 @@
 #include <stdio.h>
 #include <sys/mman.h>
 
+#ifdef __APPLE__
+#define SIGNAL_TO_HANDLE SIGBUS
+#else
+#define SIGNAL_TO_HANDLE SIGSEGV
+#endif
+
 sigjmp_buf fault_jmp;
 volatile int fault_expected;
 
@@ -44,7 +50,7 @@ int main() {
     exit(1);
   }
 
-  if (sigaction(SIGSEGV, &act, NULL)) {
+  if (sigaction(SIGNAL_TO_HANDLE, &act, NULL)) {
     perror("sigaction");
     exit(1);
   }