Another possible LTO failure in guestfish (or maybe readline)

[Richard W.M. Jones]

Here's another one:

  $ rpm -qf /usr/bin/guestfish /lib64/libreadline.so.8
  libguestfs-tools-c-1.43.1-2.fc33.x86_64
  readline-8.0-5.fc33.x86_64
  $ guestfish --version
  Segmentation fault (core dumped)

  (gdb) bt
  #0  0x0000000000000000 in  ()
  #1  0x00007f3212b72dad in history_filename
      (filename=0x5592dd41bfa0 "/home/rjones/.guestfish") at ../histfile.c:152
  #2  0x00007f3212b75e2d in read_history_range
      (filename=<optimized out>, from=0, to=-1) at ../histfile.c:280
  #3  0x00005592dd33e646 in main ()

It also caused a build failure of another package in Koji
(search the logs for "ext2.img] Segmentation fault (core dumped)"):

  https://koji.fedoraproject.org/koji/taskinfo?taskID=48245041

I suspect the problem isn't in readline but is in the main package,
mainly because I tried an older readline and that failed in the same
way.

I'm going to disable LTO in libguestfs and rebuild it.

Rich.

-- 
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