3 extern int a[][]; // { dg-error "" } invalid multidimensional array
4 extern int b[7][]; // { dg-error "" } invalid multidimensional array
5 extern int c[][7]; // OK
7 extern int (*i)[]; // { dg-error "" } previous declaration
8 extern int (*i)[7]; // { dg-error "" } conflicting types for `i'
11 extern int m[7]; // OK
16 f(k); // { dg-error "" } passing wrong type