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From: "dodji at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: libabigail@sourceware.org
Subject: [Bug default/29360] New: Ada ranges emitting/reading/diffing are not
 supported in libabigail
Date: Tue, 12 Jul 2022 15:50:21 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29360

            Bug ID: 29360
           Summary: Ada ranges emitting/reading/diffing are not supported
                    in libabigail
           Product: libabigail
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: dodji at redhat dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

fedabipkgdiff --self-compare -a --from fc36 zlib-ada

Appears to be stuck.  Upon closer look it appears that abipkgdiff is stuck =
in
an infinite loop:

build/tools/abipkgdiff --self-check  --d1
/home/dodji/.cache/fedabipkgdiff/downloads/zlib-ada-debuginfo-1.4-0.30.2012=
0830CVS.fc36.x86_64.rpm
/home/dodji/.cache/fedabipkgdiff/downloads/zlib-ada-1.4-0.30.20120830CVS.fc=
36.x86_64.rpm
.


Free form range types (range types that are not part of array types), used =
in
Ada are not fully supported by Libabigail.

What is not supported is their serilization in abixml, their de-serializati=
on
from abixml and their comparison by the comparison engine.

I started a branch with that work, at
https://sourceware.org/git/?p=3Dlibabigail.git;a=3Dshortlog;h=3Drefs/heads/=
free-range-types.

What needs to be done is the support for diffing.  Basically, creating a di=
ff
type for range types, coming up with a compute_diff function that takes ran=
ges
and returns the diff type for ranges and adding support for reporting the
changes carried by the range diff type.

This is a nice little feature to work on, IMHO.

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