extern void abort(void); extern void __assert_fail(const char *, const char *, unsigned int, const char *) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__)); void reach_error() { __assert_fail("0", "implicitunsignedconversion-2.c", 3, "reach_error"); } int main() { unsigned int plus_one = 1; int minus_one = -1; if(plus_one > minus_one) { goto ERROR; } return (0); ERROR: {reach_error();abort();} return (-1); }