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From: "jwakely.gcc at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug default/28641] unspecified indirect subtype changes.
Date: Wed, 08 Dec 2021 18:52:38 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28641

Jonathan Wakely <jwakely.gcc at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jwakely.gcc at gmail dot c=
om

--- Comment #5 from Jonathan Wakely <jwakely.gcc at gmail dot com> ---
(In reply to Ben Woodard from comment #4)
> I believe that we had a discussion a few years ago about whether const-ne=
ss
> of a function actually amounted to an ABI difference. I can't recall the
> exact ultimate decision on that point.

It absolutely is an ABI property.

> At the very least, when the difference between the two functions is "cons=
t"
> then libabigail should print that out rather than emitting nothing.

That case shouldn't really be possible. If one of them isn't const, then the
mangled name would change, and it would be a completely different symbol, a=
nd
you'd never compare them in the first place.

So writing code to handle the case where a const function is not const *sho=
uld*
be unnecessary.

--=20
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