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From: "dodji at seketeli dot org" <sourceware-bugzilla@sourceware.org>
To: libabigail@sourceware.org
Subject: [Bug default/19707] Weird report for subtype change and "no data
 member change"
Date: Fri, 01 Jan 2016 00:00:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D19707

--- Comment #1 from dodji at seketeli dot org ---
Hello,

> The other puzzling thing is this:
>
>   [C]'method unity::scopes::ActivationQueryBase::ActivationQueryBase(const
> unity::scopes::Result&, const unity::scopes::ActionMetadata&)' at
> ActivationQueryBase.cpp:29:1 has some indirect sub-type changes:
>     parameter 1 of type 'const unity::scopes::Result&' has sub-type chang=
es:
>       in referenced type 'const unity::scopes::Result':
>         in unqualified underlying type 'class unity::scopes::Result' at
> Result.h:50:1:
>           no data member change (1 filtered);

I believe this is a bug.  The comparison engine noticed a change that
was later flagged as "non serious" on a data member of
unity::scope::Result.  And thus, that change was filtered out.  But
then, as this is the only sub-type change seen on the function
ActivationQueryBase::ActivationQueryBase() (and as this only change got
filtered out) the entire change report on that function should have been
filtered out.

In other words, in libabigail parlance, I believe this is a
categorization propagation bug.

--=20
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