Zack Weinberg <zackw@xxxxxxxxx> writes: > I did. The *actual system call* does indeed return -EFAULT when > memory is invalid, which will be observed as 0xfffffffffffffff2 in the > return value. However, the *vDSO shortcut* (which does not trap into > the kernel) will just segfault the application. This is an observable > ABI difference between statically and dynamically linked binaries. Undefined behaviour can change any time in any way and is not part of the ABI. Andreas. -- Andreas Schwab, SUSE Labs, schwab@xxxxxxx GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different." -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
