rt_gccstream/gcc/testsuite/gcc.dg/overflow-1.c

26 lines
494 B
C

/* PR optimization/13318 */
/* Origin: <bremner@unb.ca> */
/* Reduced testcase: Wolfgang Bangerth <bangerth@dealii.org> */
/* Verify that the big multiplier doesn't cause an integer
overflow in the loop optimizer. */
/* { dg-do compile } */
/* { dg-options "-O2" } */
struct S {
int key;
int rnext,rprev;
};
void foo(struct S* H)
{
int i, k;
for (i=0; i<2; i++){
struct S* cell=H+k;
cell->key=i*(0xffffffffUL/2);
cell->rnext=k+(1-i);
cell->rprev=k+(1-i);
}
}