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From: "michi.henning at canonical dot com" <sourceware-bugzilla@sourceware.org>
To: libabigail@sourceware.org
Subject: [Bug default/19706] New: Core dump from abidiff with suppression
Date: Fri, 01 Jan 2016 00:00:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D19706

            Bug ID: 19706
           Summary: Core dump from abidiff with suppression
           Product: libabigail
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: michi.henning at canonical dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

Created attachment 9028
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D9028&action=3Dedit
Backtrace, dump files, and suppressions file

I'm seeing this with abigail compiled from HEAD:

$ git rev-parse HEAD
9d5b898f2868d226b1d37d4d60f6db98855c21ed

The base dump and the current dump were both generated by abidw from HEAD.

When I run abidiff with the attached dumps and suppressions file, I get a c=
ore
dump. The backtrace is in gdb.txt in the attached archive.

The problem appears to be caused by this suppression (the final one in the
suppressions file):

[suppress_function]
    name_regexp =3D unity::scopes::internal::.*

Without this suppression, I don't get a core dump.

Is there a way to suppress all changes for absolutely everything in a
particular namespace (preferably one that works with 1.0.rc2)?

We have a strict separation of public and private APIs. In particular, we u=
se
the pimpl idiom for the public API, and we have tests to enforce that no pu=
blic
header mentions anything that's in the internal namespace (other than the
opaque pointer-to-impl, which is forward-declared). So, by definition, there
cannot be an ABI break that would be caused by anything in the internal
namespace, so I'd like to write a wholesale suppression for everything in t=
hat
namespace.

--=20
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