Viewing file:  c99-static-1.c (1.2 KB) -rw-r--r--
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/* It is a constraint violation for a static function to be declared
but not defined if it is used except in a sizeof expression whose
result is an integer constant. The use of the function simply
being unevaluated is not enough. */
/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
/* { dg-do compile } */
/* { dg-options "-O2 -std=iso9899:1999 -pedantic-errors" } */
/* Constraint violation (trivial case, where function is used). */
static void f0(void); /* { dg-error "used but never defined" } */
void g0(void) { f0(); }
/* Constraint violation. */
static void f1(void); /* { dg-error "used but never defined" } */
void g1(void) { if (0) { f1(); } }
/* Constraint violation. */
static int f2(void); /* { dg-error "used but never defined" } */
void g2(void) { 0 ? f2() : 0; }
/* OK. */
static int f3(void);
void g3(void) { sizeof(f3()); }
/* OK (VM type, not VLA). */
static int f4(void);
void g4(void) { sizeof(int (*)[f4()]); }
/* Constraint violation (VLA). */
static int f5(void); /* { dg-error "used but never defined" "VLA" } */
void g5(void) { sizeof(int [0 ? f5() : 1]); }
/* OK (non-constant sizeof inside constant sizeof). */
static int f6(void);
void g6(void) { sizeof(sizeof(int [f6()])); }
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