gcc/testsuite/gcc.dg/c99-array-lval-3.c

/* Test for non-lvalue arrays decaying to pointers: in C99 only.
   Test various ways of producing non-lvalue arrays.  */
/* Origin: Joseph Myers <jsm28@cam.ac.uk> */
/* { dg-do compile } */
/* { dg-options "-std=iso9899:1999 -pedantic-errors" } */

struct s { char c[1]; };
struct s a, b, c;
int d;

void
bar (void)
{
  char *t;
  (d ? b : c).c[0];
  (d, b).c[0];
  (a = b).c[0];
  t = (d ? b : c).c;
  t = (d, b).c;
  t = (a = b).c;
  (d ? b : c).c + 1;
  (d, b).c + 1;
  (a = b).c + 1;
}