1/* It is a constraint violation for a static function to be declared
2   but not defined if it is used except in a sizeof expression whose
3   result is an integer constant.  In GNU C, we need to consider
4   __typeof__ and __alignof__ as well.  __alignof__ always returns a
5   constant, so static functions can always be used therein.
6   __typeof__ evaluates its argument iff it has variably modified
7   type.  */
8/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
9/* { dg-do compile } */
10/* { dg-options "-O2 -std=gnu99 -pedantic-errors" } */
11
12/* __alignof__, OK.  */
13static int f0(void);
14void g0(void) { __alignof__(f0()); }
15
16/* __typeof__ not variably modified, OK.  */
17static int f1(void);
18void g1(void) { __typeof__(f1()) x; }
19
20/* __typeof__ variably modified, not OK.  */
21static int f2(void); /* { dg-error "used but never defined" } */
22void g2(void) { __typeof__(int [f2()]) x; }
23
24/* __typeof__ variably modified, not OK.  */
25static int f3(void); /* { dg-error "used but never defined" } */
26void g3(void) { __typeof__(int (*)[f3()]) x; }
27
28/* Integer sizeof of VM typeof, OK.  */
29static int f4(void);
30void g4(void) { sizeof(__typeof__(int (*)[f3()])); }
31