1 extern void func(void); 2 3 int global_function(void) 4 { 5 if (func) 6 return 1; 7 return 0; 8 } 9 10 /* 11 * check-name: Waddress-function 12 * check-command: sparse -Wno-decl -Waddress $file 13 * 14 * check-error-start 15 Waddress-function.c:5:13: warning: the address of a function will always evaluate as true 16 * check-error-end 17 */ 18