1 files changed, 47 insertions, 0 deletions
diff --git a/compiler-rt/test/msan/sigaction.cpp b/compiler-rt/test/msan/sigaction.cpp
new file mode 100644
index 00000000000..0c69f115fdb
--- /dev/null
+++ b/compiler-rt/test/msan/sigaction.cpp
@@ -0,0 +1,47 @@
+// RUN: %clangxx_msan -std=c++11 -O0 -g %s -o %t
+// RUN: %run %t __
+// RUN: not %run %t A_ 2>&1 | FileCheck %s
+// RUN: not %run %t AH 2>&1 | FileCheck %s
+// RUN: not %run %t B_ 2>&1 | FileCheck %s
+// RUN: not %run %t BH 2>&1 | FileCheck %s
+// RUN: not %run %t C_ 2>&1 | FileCheck %s
+// RUN: not %run %t CH 2>&1 | FileCheck %s
+
+#include <assert.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+#include <sanitizer/msan_interface.h>
+
+void handler(int) {}
+void action(int, siginfo_t *, void *) {}
+
+int main(int argc, char **argv) {
+  char T = argv[1][0];
+  char H = argv[1][1];
+  struct sigaction sa;
+  memset(&sa, 0, sizeof(sa));
+  if (H == 'H') {
+    sa.sa_handler = handler;
+  } else {
+    sa.sa_sigaction = action;
+    sa.sa_flags = SA_SIGINFO;
+  }
+
+  if (T == 'A') {
+    if (H == 'H')
+      __msan_poison(&sa.sa_handler, sizeof(sa.sa_handler));
+    else
+      __msan_poison(&sa.sa_sigaction, sizeof(sa.sa_sigaction));
+  }
+  if (T == 'B')
+    __msan_poison(&sa.sa_flags, sizeof(sa.sa_flags));
+  if (T == 'C')
+    __msan_poison(&sa.sa_mask, sizeof(sa.sa_mask));
+  // CHECK: use-of-uninitialized-value
+  int res = sigaction(SIGUSR1, &sa, nullptr);
+  assert(res == 0);
+  return 0;
+}