MINSIGSTKSZ
#define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
sp->ss_flags != 0 || sp->ss_size < MINSIGSTKSZ ||
if (!(ss.ss_flags & SS_DISABLE) && ss.ss_size < MINSIGSTKSZ)
if (!(ss32.ss_flags & SS_DISABLE) && ss32.ss_size < MINSIGSTKSZ)