gcc/testsuite/gcc.target/i386/volatile-bitfields-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fstrict-volatile-bitfields" } */
   3
   4 typedef struct {
   5   char a:1;
   6   char b:7;
   7   int c;
   8 } BitStruct;
   9
  10 volatile BitStruct bits;
  11
  12 int foo ()
  13 {
  14   return bits.b;
  15 }
  16
  17 /* { dg-final { scan-assembler "mov(b|zbl).*bits" } } */