1 files changed, 66 insertions, 0 deletions
diff --git a/test/msan/chained_origin.cc b/test/msan/chained_origin.cc
new file mode 100644
index 000000000000..336bbd852cb3
--- /dev/null
+++ b/test/msan/chained_origin.cc
@@ -0,0 +1,66 @@
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
+// RUN:     not %run %t >%t.out 2>&1
+// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-STACK < %t.out
+
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DHEAP=1 -m64 -O3 %s -o %t && \
+// RUN:     not %run %t >%t.out 2>&1
+// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-HEAP < %t.out
+
+
+// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
+// RUN:     not %run %t >%t.out 2>&1
+// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-STACK < %t.out
+
+// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DHEAP=1 -m64 -O3 %s -o %t && \
+// RUN:     not %run %t >%t.out 2>&1
+// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-HEAP < %t.out
+
+
+#include <stdio.h>
+
+volatile int x, y;
+
+__attribute__((noinline))
+void fn_g(int a) {
+  x = a;
+}
+
+__attribute__((noinline))
+void fn_f(int a) {
+  fn_g(a);
+}
+
+__attribute__((noinline))
+void fn_h() {
+  y = x;
+}
+
+int main(int argc, char *argv[]) {
+#ifdef HEAP
+  int * volatile zz = new int;
+  int z = *zz;
+#else
+  int volatile z;
+#endif
+  fn_f(z);
+  fn_h();
+  return y;
+}
+
+// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
+// CHECK: {{#0 .* in main.*chained_origin.cc:47}}
+
+// CHECK: Uninitialized value was stored to memory at
+// CHECK: {{#0 .* in fn_h.*chained_origin.cc:35}}
+// CHECK: {{#1 .* in main.*chained_origin.cc:46}}
+
+// CHECK: Uninitialized value was stored to memory at
+// CHECK: {{#0 .* in fn_g.*chained_origin.cc:25}}
+// CHECK: {{#1 .* in fn_f.*chained_origin.cc:30}}
+// CHECK: {{#2 .* in main.*chained_origin.cc:45}}
+
+// CHECK-STACK: Uninitialized value was created by an allocation of 'z' in the stack frame of function 'main'
+// CHECK-STACK: {{#0 .* in main.*chained_origin.cc:38}}
+
+// CHECK-HEAP: Uninitialized value was created by a heap allocation
+// CHECK-HEAP: {{#1 .* in main.*chained_origin.cc:40}}