modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/compile/20080820-1.c (about)

     1  extern unsigned long volatile jiffies;
     2  void do_timer(void)
     3  {
     4    (*(unsigned long *)&jiffies)++;
     5  }