[asan] new run-time flag: sleep_before_dying (asan Issue #31)

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@149306 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/asan/asan_internal.h b/lib/asan/asan_internal.h
index fc92e9c..eecedd6 100644
--- a/lib/asan/asan_internal.h
+++ b/lib/asan/asan_internal.h
@@ -166,6 +166,7 @@
 extern size_t FLAG_max_malloc_fill_size;
 extern int    FLAG_exitcode;
 extern bool   FLAG_allow_user_poisoning;
+extern int    FLAG_sleep_before_dying;
 extern bool   FLAG_handle_segv;
 
 extern int asan_inited;