[Bug default/24766] [Regression]

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=24766

--- Comment #10 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Matthias Klose from comment #9)
> that's the Debian issue connected with this issue:
> 
>   https://bugs.debian.org/931792
> 
> for the error codes: compressed debug info maybe should have an error code
> which shows that it can be ignored?  same for code not built with -g?

So, AFAIU, you mean something along the lines of:
...
$ dwz 1; echo $?
0
$ dwz 1; echo $?
dwz: 1: DWARF compression not beneficial
2
$ dwz 2; echo $?
dwz: 2: .debug_info section not present
3
$ dwz 3; echo $?
dwz: 3: invalid dwarf: no DIE at reference 0x123
4
...

That is, we let the exit status be informative about what type of situations we
find, and let the caller decide how to handle these.

We could do something like that, but that looks like an enhancement for a next
release to me, not a regression fix. I'll file this as spin-off PR.

For now, let's fix this regression more pragmatically.

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