On Wed, 8 Mar 2017, Albert ARIBAUD wrote:
IIUC, on the kernel side there is a will to move away from Posix (1) here and just make tv_nsec 64-bits with no padding when time_t is 64-bit.
In that case, that simply means it's glibc's responsibility to avoid the x32 mistake, and copy timespec values passed to the kernel to clear padding while staying compatible with POSIX. (Which would probably also provide the infrastructure required to fix the x32 bug in glibc along the lines used in musl.)