#19 Fix Fedora 40 crash caused by LTO

[Jarkko Sakkinen]

In Fedora 40, assuming that sync directory starts from an empty state, mbsync will sigsegv unless LTO is disabled.

[Jarkko Sakkinen]

For more information, see the discussion at https://bugzilla.redhat.com/show_bug.cgi?id=2302132

When LTO is on boxes array is literally truncated to a single element array. I do not think mbsync will have any particular benefit from LTO so it would really be pragmatic decision to plain disable it also to prevent any future issues happening.

[Jarkko Sakkinen]

One remark. Now that I re-tested my patch I had to:

-mbsync_CFLAGS = -fno-lto
+CFLAGS += -fno-lto

Otherwise:

drv_proxy.c:458:10: fatal error: drv_proxy.inc: No such file or directory
  458 | #include "drv_proxy.inc"
      |          ^~~~~~~~~~~~~~~

I don't understand this causality so not updating patch yet.

[Jarkko Sakkinen]

Right you can add patch per comment. Well here's v2.

[Oswald Buddenhagen]

i think this is already properly fixed by commit ceb0fa980.

[Jarkko Sakkinen]

OK it does fix the issue. I tested it! I report this to the Fedora bug, thank you.

[Jarkko Sakkinen]

I.e. this can be closed.