# patch to check the return type of main
--- dmd-0.112/dmd/src/dmd/func.c.orig	Sun Dec 19 15:11:58 2004
+++ dmd-0.112/dmd/src/dmd/func.c	Thu Feb  3 16:19:29 2005
@@ -333,6 +333,11 @@
 	Lmainerr:
 	    error("parameters must be main() or main(char[][] args)");
 	}
+	// Check return type to see if it is either void or int
+	if ((type->next->ty != Tvoid) && (type->next->ty != Tint32))
+	{
+	    error("return type must be either void or int");
+	}
     }
 }