| /* { dg-do compile } */ | |
| /* { dg-options "-O2 -fdump-tree-optimized -w" } */ | |
| struct ehci_regs { | |
| char x; | |
| unsigned int port_status[0]; | |
| } __attribute__ ((packed)); | |
| struct ehci_hcd { | |
| struct ehci_regs *regs; | |
| }; | |
| int ehci_hub_control (struct ehci_hcd *ehci, int wIndex) | |
| { | |
| unsigned int *status_reg = &ehci->regs->port_status[wIndex]; | |
| return *(volatile unsigned int *)status_reg; | |
| } | |
| /* { dg-final { scan-tree-dump "={v}" "optimized" } } */ |