modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20171008-1.c (about)

     1  struct S { char c1, c2, c3, c4; } __attribute__((aligned(4)));
     2  
     3  static char bar (char **p) __attribute__((noclone, noinline));
     4  static struct S foo (void) __attribute__((noclone, noinline));
     5  
     6  int i;
     7  
     8  static char
     9  bar (char **p)
    10  {
    11    i = 1;
    12    return 0;
    13  }
    14  
    15  static struct S
    16  foo (void)
    17  {
    18    struct S ret;
    19    char r, s, c1, c2;
    20    char *p = &r;
    21  
    22    s = bar (&p);
    23    if (s)
    24      c2 = *p;
    25    c1 = 0;
    26  
    27    ret.c1 = c1;
    28    ret.c2 = c2;
    29    return ret;
    30  }
    31  
    32  int main (void)
    33  {
    34    struct S s = foo ();
    35    if (s.c1 != 0)
    36      __builtin_abort ();
    37    return 0;
    38  }