gcc/testsuite/gcc.dg/Wsequence-point-pr18050.c

   1 /* PR 18050 : bogus warning with -Wsequence-point */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wsequence-point" } */
   4
   5 struct x
   6 {
   7   int i;
   8 };
   9 void bar(struct x*, int *);
  10
  11 void foo(struct x *y)
  12 {
  13   bar(y++, &y->i); /* { dg-warning "operation on 'y' may be undefined" } */
  14 }
  15
  16 void zz(int a, int *b)
  17 {
  18   *b = a;
  19 }
  20
  21 void baz(void) {
  22   int a = 5;
  23   zz(++a, &a);  /* { dg-bogus "operation on 'a' may be undefined" } */
  24 }