https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107573
--- Comment #1 from Jamie Bainbridge <jamie.bainbridge at gmail dot com> --- Thanks for logging this! (In reply to David Malcolm from comment #0) > - complain about NULL passed as the string to the first call of strtok > reached from entry to "main" (I don't think there's a guarantee that strtok > checks for this). UNIX libc (since BSD 4.3 or earlier) and musl (since always) check for this and return NULL, but glibc intentionally crashes as a form of UB detection. Further discussion of glibc behaviour at: https://sourceware.org/bugzilla/show_bug.cgi?id=16640 https://sourceware.org/pipermail/libc-alpha/2022-November/143337.html As we discussed via email, C99 and later have contained: > The first call in the sequence has a non-null first argument;
