pub unsafe extern "C" fn mpc_test_fail(
p: *mut mpc_parser_t,
s: *const c_char,
d: *const c_void,
tester: extern "C" fn(a1: *const c_void, a2: *const c_void) -> i32,
destructor: mpc_dtor_t,
printer: extern "C" fn(p: *const c_void),
) -> i32