gcc/testsuite/gcc.dg/pr56078.c

   1 /* PR c/56078 */
   2 /* { dg-do run } */
   3 /* { dg-options "-std=gnu99" } */
   4
   5 typedef __SIZE_TYPE__ size_t;
   6 extern int memcmp (const void *, const void *, size_t);
   7 extern void abort (void);
   8
   9 struct T { int a; char b[]; };
  10 struct T t1 = { .a = 1, .b = "abcd", .b[0] = '2' };
  11 struct T t2 = { .a = 1, .b = "2bcd" };
  12 struct T t3 = { .a = 1, .b[2] = 'a' };
  13 struct T t4 = { .a = 1, .b = { '\0', '\0', 'a' } };
  14 struct T t5 = { .a = 1, .b = { [0] = 'a', [1] = 'b', [2] = 'c' } };
  15 struct T t6 = { .a = 1, .b[2] = 'c', .b[1] = 'x', .b[0] = 'a', .b[1] = 'b' };
  16
  17 int
  18 main ()
  19 {
  20   if (memcmp (t1.b, t2.b, sizeof ("abcd")) != 0
  21       || memcmp (t3.b, t4.b, 3) != 0
  22       || memcmp (t5.b, t6.b, 3) != 0)
  23     abort ();
  24   return 0;
  25 }