/* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-optimized" } */ struct GTeth_desc { unsigned ed_cmdsts; }; struct GTeth_softc { struct GTeth_desc txq_desc[32]; }; void foo(struct GTeth_softc *sc) { /* Verify that we retain the volatileness on the store until after optimization. */ volatile struct GTeth_desc *p = &sc->txq_desc[0]; p->ed_cmdsts = 0; } /* { dg-final { scan-tree-dump "{v}" "optimized" } } */