1 files changed, 36 insertions, 0 deletions
diff --git a/test/PCH/macro-undef.cpp b/test/PCH/macro-undef.cpp
new file mode 100644
index 000000000000..c0ce2de23fe3
--- /dev/null
+++ b/test/PCH/macro-undef.cpp
@@ -0,0 +1,36 @@
+// RUN: %clang_cc1 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fsyntax-only -include-pch %t %s -Wuninitialized -verify
+// RUN: %clang_cc1 -fsyntax-only -include-pch %t %s -Wuninitialized -fdiagnostics-parseable-fixits 2>&1 | FileCheck %s
+
+#ifndef HEADER
+#define HEADER
+
+#define NULL 0
+template<typename T>
+void *f() {
+  void *p;  // @11
+  return p; // @12
+}
+#undef NULL
+template<typename T>
+void *g() {
+  void *p;  // @17
+  return p; // @18
+}
+
+#else
+
+// expected-warning@12 {{uninitialized}}
+// expected-note@11 {{initialize}}
+// CHECK: fix-it:"{{.*}}":{11:10-11:10}:" = NULL"
+
+// expected-warning@18 {{uninitialized}}
+// expected-note@17 {{initialize}}
+// CHECK: fix-it:"{{.*}}":{17:10-17:10}:" = 0"
+
+int main() {
+  f<int>(); // expected-note {{instantiation}}
+  g<int>(); // expected-note {{instantiation}}
+}
+
+#endif