[compiler-rt] r240965 - sanitizer_common: fix and re-enable signal_segv_handler test

[Dmitry Vyukov]

Author: dvyukov
Date: Mon Jun 29 11:31:10 2015
New Revision: 240965

URL: http://llvm.org/viewvc/llvm-project?rev=240965&view=rev
Log:
sanitizer_common: fix and re-enable signal_segv_handler test

struct sigaction was not initialized. As the result if SA_RESETHAND is set in sa_flags, then the handler is reset after first invocation leading to crash.
Initialize struct sigaction to zero.

Reviewed in http://reviews.llvm.org/D10803


Modified:
    compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/signal_segv_handler.cc

Modified: compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/signal_segv_handler.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/signal_segv_handler.cc?rev=240965&r1=240964&r2=240965&view=diff
==============================================================================
--- compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/signal_segv_handler.cc (original)
+++ compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/signal_segv_handler.cc Mon Jun 29 11:31:10 2015
@@ -13,12 +13,11 @@
 // "benign" SEGVs that are handled by signal handler, and ensures that
 // the process survive.
 
-// REQUIRES: disabled
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <signal.h>
 #include <sys/mman.h>
+#include <string.h>
 
 void *guard;
 
@@ -28,6 +27,8 @@ void handler(int signo, siginfo_t *info,
 
 int main() {
   struct sigaction a, old;
+  memset(&a, 0, sizeof(a));
+  memset(&old, 0, sizeof(old));
   a.sa_sigaction = handler;
   a.sa_flags = SA_SIGINFO;
   sigaction(SIGSEGV, &a, &old);