https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105935
Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |fxcoudert at gcc dot gnu.org --- Comment #1 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> --- Created attachment 55363 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55363&action=edit Proposed patch The issue is real, but I would suggest that snprintf() and vsnprintf() should always be available, being C99 functions, on our targets. The real trigger for your issue in a mingw-w64 bug, if I read that right. I would simply recommend we stop providing our own, unsafe workarounds for these functions, per the patch attached (needs regenerating in maintainer mode, on top of the patch file).