Moved misc/bug1048 as it is already correctly rejected by the compiler.

test/err/bug1048.c

@@ -0,0 +1,15 @@
+/* bug #1048: The following code has two errors: a redeclared enum type and an
+   undeclared enum type: */
+
+#include <stdlib.h>
+
+// this should NOT compile - but with cc65 it does
+enum e { x };
+enum e { y };
+
+int f() { return sizeof(enum undeclared); }
+
+int main(void)
+{
+    return EXIT_SUCCESS;
+}