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/* Verify that NRV optimizations are prohibited when the LHS is
something that may be call-clobbered. */
/* { dg-do compile } */
/* { dg-options "-O -fdump-tree-optimized" } */
typedef struct { int x[20]; void *y; } S;
typedef struct { int a; S b; } T;
S nrv_candidate (void);
void use_result (S);
void make_escape (S *);
void foo (void)
{
S result;
T result_arr[10][5];
make_escape (&result);
make_escape (&(result_arr[3][4].b));
/* Neither call should be allowed to use NRV optimization. */
result = nrv_candidate ();
result_arr[3][4].b = nrv_candidate ();
use_result (result);
use_result (result_arr[3][4].b);
}
/* { dg-final { scan-tree-dump-times "return slot optimization" 0 "optimized" } } */
/* { dg-final { cleanup-tree-dump "optimized" } } */
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