1 files changed, 22 insertions, 0 deletions
diff --git a/test/PCH/replaced-decl.m b/test/PCH/replaced-decl.m
new file mode 100644
index 0000000000000..b9fee950d7a14
--- /dev/null
+++ b/test/PCH/replaced-decl.m
@@ -0,0 +1,22 @@
+// Without PCH
+// RUN: %clang_cc1 -fsyntax-only -verify %s -include %s -include %s
+
+// With PCH
+// RUN: %clang_cc1 -fsyntax-only -verify %s -chain-include %s -chain-include %s
+
+#ifndef HEADER1
+#define HEADER1
+
+@class I;
+
+#elif !defined(HEADER2)
+#define HEADER2
+
+@interface I // expected-note {{previous}}
+@end
+
+#else
+
+typedef int I; // expected-error {{redefinition}}
+
+#endif