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