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From: "woodard at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug default/27019] BUILD metabug
Date: Tue, 07 Dec 2021 01:17:15 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27019

--- Comment #1 from Ben Woodard <woodard at redhat dot com> ---
Fundamental requirement:
1) to be able to use the abixml in place of the original ELF object when do=
ing
analysis and comparison
  this results in:=20
    a) forall ELF_file abidw --abidiff must not report any changes - this h=
as
been the majority of the bugs found and fixed so far.
    b) forall libabigail_utilites it must be able to use an abixml file in
place of the original ELF object -- e.g. 27635

2) abicompat must give accurate results as much as possible
    a) when evaluating compatibility calls from the libraries back into the
application must be considered. 27208 (kind of)
    b) other library dependencies that the app relies on must also be
considered when evaluating compatibility 27514
    c) exceptions must be considered 28025
    d) inline functions must be considered
    e) underlinked functions must be considered 27208

3) Objects created by different toolchains should not confuse libabigail wh=
en
doing comparison. We need tooling that allows us to reliably compare the AB=
Is
of objects created by different tool chains.
    a) const-ness of a function should not be an ABI artifact 28641
    b) vtable positions need to be comparable even with the compiler implies
the position rather than explicitly specifying it. 28642
    c) template instantiations need drill down into template value paramete=
rs
rather than just relying on the template instantiation name 28664

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