dict0dict.c:

  If the string foreign was succeeded by a non-space character, that confused the foreign key syntax parser

innobase/dict/dict0dict.c

@@ -1983,7 +1983,7 @@ loop:
 	ptr = dict_accept(ptr, "FOREIGN", &success);		
 	
 	if (!isspace(*ptr)) {
-		return(DB_CANNOT_ADD_CONSTRAINT);
+	        goto loop;
 	}
 
 	ptr = dict_accept(ptr, "KEY", &success);