1 extern int fun(void); 2 fa(void)3void fa(void) { int (*f)(void); f = &fun; } f0(void)4void f0(void) { int (*f)(void); f = fun; } // C99,C11 6.3.2.1p4 f1(void)5void f1(void) { int (*f)(void); f = *fun; } // C99,C11 6.5.3.2p4 f2(void)6void f2(void) { int (*f)(void); f = **fun; } // C99,C11 6.5.3.2p4 f3(void)7void f3(void) { int (*f)(void); f = ***fun; } // C99,C11 6.5.3.2p4 8 9 /* 10 * check-name: type of function pointers 11 * check-command: sparse -Wno-decl $file 12 */ 13