Hello I cut the patch to a primary and a secondary parts. In the primary I fixed more significant issues. Could you please review and merge at least 1st part of the patch. --

Hello I found some flaws in the source code; So I made this patch. Could you please review it :blush: Fixes: you can free/delete/delete[] NULL strstr returns ptr; checking retval against > 0 some logging for midi oss & alsa some logging in dos_mscdex.cpp placed several va_end new doesn't returns …