[Bug go/66574] Time is provided in millisecond precision instead of nanoseconds as described in go documentation

[boger at us dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66574

--- Comment #6 from boger at us dot ibm.com ---
(In reply to Ian Lance Taylor from comment #5)
> Fixed on mainline.

Can this be backported to the gcc 5 branch?