1 files changed, 24 insertions, 0 deletions
diff --git a/test/msan/select_float_origin.cc b/test/msan/select_float_origin.cc
new file mode 100644
index 000000000000..ca8f3a83b0ed
--- /dev/null
+++ b/test/msan/select_float_origin.cc
@@ -0,0 +1,24 @@
+// Regression test for origin propagation in "select i1, float, float".
+// https://code.google.com/p/memory-sanitizer/issues/detail?id=78
+
+// RUN: %clangxx_msan -O2 -fsanitize-memory-track-origins %s -o %t && not %run %t >%t.out 2>&1
+// RUN: FileCheck %s < %t.out
+
+// RUN: %clangxx_msan -O2 -fsanitize-memory-track-origins=2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: FileCheck %s < %t.out
+
+#include <stdio.h>
+#include <sanitizer/msan_interface.h>
+
+int main() {
+  volatile bool b = true;
+  float x, y;
+  __msan_allocated_memory(&x, sizeof(x));
+  __msan_allocated_memory(&y, sizeof(y));
+  float z = b ? x : y;
+  if (z > 0) printf(".\n");
+  // CHECK: Uninitialized value was created by a heap allocation
+  // CHECK: {{#0 0x.* in .*__msan_allocated_memory}}
+  // CHECK: {{#1 0x.* in main .*select_float_origin.cc:}}[[@LINE-6]]
+  return 0;
+}