`vector::resize` instead of `vector::reserve` might do it. The latter ensures allocation, but doesn't set the size, and it's `vector::operator[]` that has the failing assertion based on the index 0 not being less than the size 0. -- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/1614#issuecomment-1034928628 You are receiving this because you are subscribed to this thread. Message ID: <[log in to unmask]> ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1