gcc/testsuite/gcc.c-torture/compile/pr40351.c

   1 /* PR tree-optimizations/40351 */
   2
   3 struct IO_APIC_route_entry {
   4     unsigned int vector : 8;
   5     unsigned int delivery_mode : 1;
   6     unsigned int mask : 1;
   7     unsigned int __reserved_2 : 15;
   8     unsigned int __reserved_3 : 8;
   9 } __attribute__ ((packed));
  10 union entry_union {
  11     struct {
  12         unsigned int w1, w2;
  13     };
  14     struct IO_APIC_route_entry entry;
  15 };
  16 unsigned int io_apic_read(void);
  17 struct IO_APIC_route_entry ioapic_read_entry(void)
  18 {
  19   union entry_union eu;
  20   eu.w1 = io_apic_read();
  21   return eu.entry;
  22 }