PJT_ATTR_SETGUARDSIZE
STUB_FUNC2(pthread_attr_setguardsize, PJT_ATTR_SETGUARDSIZE, int, void *, size_t)
[PJT_ATTR_SETGUARDSIZE] = {PJT_DUAL_ENTRY(stub_zero)},
[PJT_ATTR_SETGUARDSIZE] = {DUAL_ENTRY(_thr_attr_setguardsize)},