1 /* RUN: %clang_cc1 %s -fsyntax-only -pedantic -verify
2 */
3 struct incomplete; // expected-note{{forward declaration of 'struct incomplete'}}
4
sub1(int * a,double * b)5 int sub1(int *a, double *b) {
6 return a - b; /* expected-error{{not pointers to compatible types}} */
7 }
8
sub2(struct incomplete * P)9 void *sub2(struct incomplete *P) {
10 return P-4; /* expected-error{{arithmetic on a pointer to an incomplete type 'struct incomplete'}} */
11 }
12
sub3(void * P)13 void *sub3(void *P) {
14 return P-4; /* expected-warning{{arithmetic on a pointer to void is a GNU extension}} */
15 }
16
sub4(void * P,void * Q)17 int sub4(void *P, void *Q) {
18 return P-Q; /* expected-warning{{arithmetic on pointers to void is a GNU extension}} */
19 }
20
sub5(void * P,int * Q)21 int sub5(void *P, int *Q) {
22 return P-Q; /* expected-error{{not pointers to compatible types}} */
23 }
24
logicaland1(int a)25 int logicaland1(int a) {
26 return a && (void)a; /* expected-error{{invalid operands}} */
27 }
28