1 files changed, 35 insertions, 0 deletions
diff --git a/lib/msan/lit_tests/insertvalue_origin.cc b/lib/msan/lit_tests/insertvalue_origin.cc
new file mode 100644
index 000000000000..769ea45f8c4d
--- /dev/null
+++ b/lib/msan/lit_tests/insertvalue_origin.cc
@@ -0,0 +1,35 @@
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %t >%t.out 2>&1
+// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %t >%t.out 2>&1
+// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
+
+// Test origin propagation through insertvalue IR instruction.
+
+#include <stdio.h>
+#include <stdint.h>
+
+struct mypair {
+ int64_t x;
+ int y;
+};
+
+mypair my_make_pair(int64_t x, int y)  {
+ mypair p;
+ p.x = x;
+ p.y = y;
+ return p;
+}
+
+int main() {
+ int64_t * volatile p = new int64_t;
+ mypair z = my_make_pair(*p, 0);
+ if (z.x)
+   printf("zzz\n");
+ // CHECK: MemorySanitizer: use-of-uninitialized-value
+ // CHECK: {{in main .*insertvalue_origin.cc:}}[[@LINE-3]]
+
+ // CHECK: Uninitialized value was created by a heap allocation
+ // CHECK: {{in main .*insertvalue_origin.cc:}}[[@LINE-8]]
+ delete p;
+ return 0;
+}