1 /* Test for non-lvalue arrays decaying to pointers: in C99 only. */ 2 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */ 3 /* { dg-do compile } */ 4 /* { dg-options "-std=iso9899:1990 -pedantic-errors" } */ 5 6 struct s { char c[17]; }; 7 8 struct s x; 9 10 extern struct s foo (void); 11 12 #define ASSERT(v, a) char v[((a) ? 1 : -1)] 13 14 ASSERT (p, sizeof (x.c) == 17); 15 ASSERT (q, sizeof (0, x.c) == sizeof (char *)); 16 ASSERT (r, sizeof ((foo ()).c) == 17); 17 /* The non-lvalue array does not decay to a pointer, so the comma expression 18 has (non-lvalue) array type. 19 */ 20 ASSERT (s, sizeof (0, (foo ()).c) == 17); /* { dg-bogus "array" "bad non-lvalue array handling" } */ 21