On Wed, Mar 22, 2023 at 03:07:01PM -0500, Eric Blake wrote: > On Wed, Mar 22, 2023 at 04:53:42PM +0100, Laszlo Ersek wrote: > > The solution is that glibc *too* has a bug, and that bug hides the busybox > > bug. Namely, in glibc, going back to historical commit > > > > commit 6a032d81581978187f562e5533a32e0a6a3d352b (tag: cvs/libc-960210)
> > > > In other words, the original argv[0] is not preserved, but is replaced by > > <shell path>. (Look for _PATH_BSHELL in said historical glibc commit, and > > also in today's glibc file "posix/execvpe.c".) > > Aside - what a funny filename, since execvpe() is a glibc extension > not in POSIX ;) > > I've now filed a bug report to the Austin Group: > https://www.austingroupbugs.net/view.php?id=1645 And while researching > for that, I found that FreeBSD had the same bug up until 2020: > https://cgit.freebsd.org/src/commit/?id=301cb491ea > > On the other hand, the fact that FreeBSD changed and didn't suffer an > immediate backlash of breaking programs means that glibc might > consider such a change, despite the length of the history it would be > changing. So I'll also file a bug to glibc as part of my efforts. The glibc bug is now filed: https://sourceware.org/bugzilla/show_bug.cgi?id=30262 And while doing all this, I also spotted another (unrelated) bug in POSIX: Issue 8 will be moving to C17, which introduces at_quick_exit(); the exec page needs an update to match that (hmm - the draft 3 document I submitted this against is not yet public, but it's coming Real Soon Now (tm)). https://www.austingroupbugs.net/view.php?id=1646 (And I've been using C99 for so long that I was unaware of C17's at_quick_exit() before this week) What a busy day, filing bugs against multiple projects! -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org _______________________________________________ Libguestfs mailing list Libguestfs@redhat.com https://listman.redhat.com/mailman/listinfo/libguestfs
