[Bug default/19352] New: Detect changes in default parameter values of functions

[dodji at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19352

            Bug ID: 19352
           Summary: Detect changes in default parameter values of
                    functions
           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: ---

Today libabigail does not represent default parameter values of functions.

Thus, it does not detect changes in default parameters of functions.

Note these can cause unexpected runtime behaviour changes  in applications that
don't necessarily expect changes in default parameter values of the functions
they dynamically link against.

Libabigail should detect those changes.

A real life example of issues causes by changes like that can be seen at
https://mail.kde.org/pipermail/taglib-devel/2015-December/002800.html.

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