1 files changed, 23 insertions, 0 deletions
diff --git a/test/Sema/ext_vector_casts.c b/test/Sema/ext_vector_casts.c
new file mode 100644
index 0000000000000..8aa762ebcf2ae
--- /dev/null
+++ b/test/Sema/ext_vector_casts.c
@@ -0,0 +1,23 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+
+typedef __attribute__(( ext_vector_type(2) )) float float2;
+typedef __attribute__(( ext_vector_type(4) )) int int4;
+typedef __attribute__(( ext_vector_type(4) )) float float4;
+typedef float t3 __attribute__ ((vector_size (16)));
+
+static void test() {
+    float2 vec2;
+    float4 vec4, vec4_2;
+    int4 ivec4;
+    t3 vec4_3;
+    
+    vec4 = (float4)5.0f;
+    vec4 = (float4)5;
+    vec4 = (float4)vec4_3;
+    
+    ivec4 = (int4)5.0f;
+    ivec4 = (int4)5;
+    ivec4 = (int4)vec4_3;
+    
+    vec4 = (float4)vec2; // expected-error {{invalid conversion between ext-vector type 'float4' and 'float2'}}
+}