1 files changed, 48 insertions, 0 deletions
diff --git a/lib/asan/lit_tests/TestCases/allow_user_segv.cc b/lib/asan/lit_tests/TestCases/allow_user_segv.cc
new file mode 100644
index 000000000000..55cf6044e7a0
--- /dev/null
+++ b/lib/asan/lit_tests/TestCases/allow_user_segv.cc
@@ -0,0 +1,48 @@
+// Regression test for
+// https://code.google.com/p/address-sanitizer/issues/detail?id=180
+
+// RUN: %clangxx_asan -O0 %s -o %t && ASAN_OPTIONS=allow_user_segv_handler=true not %t 2>&1 | FileCheck %s
+// RUN: %clangxx_asan -O2 %s -o %t && ASAN_OPTIONS=allow_user_segv_handler=true not %t 2>&1 | FileCheck %s
+
+#include <signal.h>
+#include <stdio.h>
+
+struct sigaction user_sigaction;
+struct sigaction original_sigaction;
+
+void User_OnSIGSEGV(int signum, siginfo_t *siginfo, void *context) {
+  fprintf(stderr, "User sigaction called\n");
+  if (original_sigaction.sa_flags | SA_SIGINFO)
+    original_sigaction.sa_sigaction(signum, siginfo, context);
+  else
+    original_sigaction.sa_handler(signum);
+}
+
+int DoSEGV() {
+  volatile int *x = 0;
+  return *x;
+}
+
+int main() {
+  user_sigaction.sa_sigaction = User_OnSIGSEGV;
+  user_sigaction.sa_flags = SA_SIGINFO;
+#if defined(__APPLE__) && !defined(__LP64__)
+  // On 32-bit Darwin KERN_PROTECTION_FAILURE (SIGBUS) is delivered.
+  int signum = SIGBUS;
+#else
+  // On 64-bit Darwin KERN_INVALID_ADDRESS (SIGSEGV) is delivered.
+  // On Linux SIGSEGV is delivered as well.
+  int signum = SIGSEGV;
+#endif
+  if (sigaction(signum, &user_sigaction, &original_sigaction)) {
+    perror("sigaction");
+    return 1;
+  }
+  fprintf(stderr, "User sigaction installed\n");
+  return DoSEGV();
+}
+
+// CHECK: User sigaction installed
+// CHECK-NEXT: User sigaction called
+// CHECK-NEXT: ASAN:SIGSEGV
+// CHECK: AddressSanitizer: SEGV on unknown address