New testcase for PR396

llvm-svn: 14656
diff --git a/llvm/test/Regression/CFrontend/2004-07-06-FunctionCast.c b/llvm/test/Regression/CFrontend/2004-07-06-FunctionCast.c
new file mode 100644
index 0000000..1d4a261
--- /dev/null
+++ b/llvm/test/Regression/CFrontend/2004-07-06-FunctionCast.c
@@ -0,0 +1,8 @@
+static int unused_func(void) {
+  return 1;
+}
+
+int foo(void) {
+  (void)unused_func; /* avoid compiler warning */
+  return 2;
+}