https://bugs.winehq.org/show_bug.cgi?id=50885
--- Comment #5 from Lauri Kenttä lauri.kentta@gmail.com --- Created attachment 69711 --> https://bugs.winehq.org/attachment.cgi?id=69711 ecvt_s trace with +0/-0
For reference, here's the relevant trace of ecvt_s with +0/-0. Obviously vsscanf_l gets invalid string to parse where -0 is involved.