diff --git a/test/CFrontend/2004-11-25-UnnamedBitfieldPadding.c b/test/CFrontend/2004-11-25-UnnamedBitfieldPadding.c
new file mode 100644
index 00000000000..b3f4a829a9e
--- /dev/null
+++ b/test/CFrontend/2004-11-25-UnnamedBitfieldPadding.c
@@ -0,0 +1,8 @@
+// RUN: %llvmgcc -S %s -o /dev/null
+// This is a testcase for PR461
+typedef struct {
+  unsigned min_align: 1;
+  unsigned : 1;
+} addr_diff_vec_flags;
+
+addr_diff_vec_flags X;