std: Add libssp implementation for GNU/Windows targets
Unlike glibc and musl, MinGW provides no libssp symbols leading to
countless compile errors if FORTIFY_SOURCE is defined.
Add a (incomplete) implementation of libssp written in Zig so that
linking succeeds.
Closes #6492
d44486b274LemonBoy committed on 10/17/2020, 1:22:14 AM· committed by Andrew Kelleyparent2aff27d