1 files changed, 10 insertions, 0 deletions
diff --git a/test/PCH/ext_vector.c b/test/PCH/ext_vector.c
new file mode 100644
index 0000000..4b5c259
--- /dev/null
+++ b/test/PCH/ext_vector.c
@@ -0,0 +1,10 @@
+// Test this without pch.
+// RUN: clang-cc -include %S/ext_vector.h -fsyntax-only -verify %s &&
+
+// Test with pch.
+// RUN: clang-cc -emit-pch -o %t %S/ext_vector.h &&
+// RUN: clang-cc -include-pch %t -fsyntax-only -verify %s 
+
+int test(float4 f4) {
+  return f4.xy; // expected-error{{float2}}
+}