1 files changed, 15 insertions, 0 deletions
diff --git a/test/PCH/undefined-internal.c b/test/PCH/undefined-internal.c
new file mode 100644
index 0000000..ef51460
--- /dev/null
+++ b/test/PCH/undefined-internal.c
@@ -0,0 +1,15 @@
+// RUN: %clang_cc1 -emit-pch %s -o %t
+// RUN: %clang_cc1 -include-pch %t %s -verify
+#ifndef HEADER_H
+#define HEADER_H
+static void f();
+static void g();
+void h() {
+  f();
+  g();
+}
+#else
+static void g() {}
+// expected-warning@5{{function 'f' has internal linkage but is not defined}}
+// expected-note@8{{used here}}
+#endif