#include <stdio.h> extern int foo(void); extern int bar(void); typedef int (*func_p) (void); func_p foo_ptr = foo; func_p __attribute__((noinline)) get_bar (void) { return bar; } int main (void) { func_p bar_ptr = get_bar (); if (bar_ptr != bar) __builtin_abort (); if (bar_ptr() != -1) __builtin_abort (); if (bar() != -1) __builtin_abort (); if (foo_ptr != foo) __builtin_abort (); if (foo_ptr() != 1) __builtin_abort (); if (foo() != 1) __builtin_abort (); printf ("OK\n"); return 0; } |