gcc/testsuite/gcc.dg/c90-array-lval-7.c

   1 /* Test for non-lvalue arrays: test that C90 does not allow them in
   2    conditional expressions, while in C99 they decay and are
   3    allowed.  */
   4
   5 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
   6 /* { dg-do compile } */
   7 /* { dg-options "-std=iso9899:1990 -pedantic-errors" } */
   8
   9 struct s { char c[1]; };
  10 struct s a, b, c;
  11 int d;
  12 int e;
  13
  14 void
  15 bar (void)
  16 {
  17   /* In C90, the non-lvalue arrays do not decay to pointers, and
  18      6.3.15 does not permit conditional expressions between arrays.
  19      In C99, they decay to pointers.  */
  20   (e ? (d ? b : c).c : (e ? b : c).c); /* { dg-bogus "warning" "warning in place of error" } */
  21 }
  22
  23 /* { dg-error "array" "bad conditional" { target *-*-* } 20 } */