New testcase. The CFE should not generate illegal LLVM intrinsics, even if

the input program is horribly broken (like 126.gcc).

llvm-svn: 11401

test/Regression/CFrontend/2004-02-13-IllegalVararg.c.tr

@@ -0,0 +1,11 @@
+// RUN: %llvmgcc -xc %s -c -o - | llc
+
+#include <stdarg.h>
+
+float test(int X, ...) {
+  va_list ap;
+  float F;
+  va_start(ap, X);
+  F = va_arg(ap, float);
+  return F;
+}