$ git --version git version 2.34.1 $ uname -a Linux zed 5.15.0-48-generic #54-Ubuntu SMP Fri Aug 26 13:26:29 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux I get: $ git rev-parse --parseopt -- <<<$'x\n--\n=, x\n' fatal: Out of memory, malloc failed (tried to allocate 18446744073709551615 bytes) ---- Here's a less cryptic that fails the same way: OPTS_SPEC="\ some-command [<options>] <args>... some-command does foo and bar! -- h,help show the help =,equal nooooooooooooo! " echo "$OPTS_SPEC" | git rev-parse --parseopt -- ---- '=' as a short form in the opts spec seems to be the culprit. I was trying to see what short options could be parsed like '-9', '-_', '-+', etc. In addition to '=', '!' and '*' also cause crashes. I tested all the other ascii punctuation and didn't see crashes.
