[Bug default/28760] libstdc++ doesn't pass self check

["woodard at redhat dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=28760

Ben Woodard <woodard at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #1 from Ben Woodard <woodard at redhat dot com> ---
commit 72b46b2600ef1f7af54b6d5f7dd6afc23c7cf2c3
Author: Dodji Seketeli <dodji@redhat.com>
Date:   Thu Jun 23 12:13:05 2022 +0200

    ir: Make canonicalization stable wrt typedefs in fn return types

    In the grand scheme of things, two function return types can be equal
    modulo typedefs.  Because those two function textual representations
    are different, the two overall function types would end up having
    different canonical types and thus, the two functions would be
    considered as having different sub-types.  The harmless change pass
    would then kick in and flag that change as harmless.  But then, "abidw
    --abidiff" that is used for testing purposes would still be not happy.

    This patch strips typedefs off of return types of function types when
    the string representation is to be used for internal (e.g, type
    canonicalization) purposes.

    The fix for this change uncovered another issue:

    When setting the naming typedefs for an (anonymous) C++ class, the
    qualified name of the class was wrongly being set to the qualified
    name of the typedef.  Only the name of the class should be affected,
    in essence.  The qualified name would, ONLY as a result of the name
    change, be adjusted.

    This patch fixes those issues and adjusts the test suite accordingly.

            * src/abg-ir.cc (get_function_type_name, get_method_type_name):
            When the function type name is for internal purposes, strip
            potential typedefs off.
            (equal): In the overload for function_type, strip potential
            typedefs off of return types before comparing them.
            (decl_base::set_naming_typedef): Properly adjust the qualified
            name of the type to which a naming typedef is being set.
            * tests/data/test-alt-dwarf-file/libstdc++/libstdc++-report.txt:
            New reference test output.
            *
tests/data/test-alt-dwarf-file/libstdc++/usr/lib/debug/usr/lib64/libstdc++.so.6.0.30-12.1.1-1.fc37.x86_64.debug:
            New binary test input.
            *
tests/data/test-alt-dwarf-file/libstdc++/usr/lib64/libstdc++.so.6.0.30:
            New binary test input.
            * tests/data/Makefile.am: Add the new test material to source
            distribution.
            * tests/data/test-annotate/test15-pr18892.so.abi: Adjust.
            * tests/data/test-annotate/test17-pr19027.so.abi: Likewise.
            * tests/data/test-annotate/test21-pr19092.so.abi: Likewise.
            * tests/data/test-read-dwarf/PR25007-sdhci.ko.abi: Likewise.
            * tests/data/test-read-dwarf/test-libaaudio.so.abi: Likewise.
            * tests/data/test-read-dwarf/test-libandroid.so.abi: Likewise.
            * tests/data/test-read-dwarf/test15-pr18892.so.abi: Likewise.
            * tests/data/test-read-dwarf/test16-pr18904.so.abi: Likewise.
            * tests/data/test-read-dwarf/test17-pr19027.so.abi: Likewise.
            * tests/data/test-read-dwarf/test21-pr19092.so.abi: Likewise.

    Signed-off-by: Dodji Seketeli <dodji@redhat.com>

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