[Bug c++/25325] enum class inherited from typedef of unsigned type does not handle values with high bit set

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=25325

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Hannes Domani <ssbssa@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9e7c9a03eefafae549dafa8bec13232a780804ef

commit 9e7c9a03eefafae549dafa8bec13232a780804ef
Author: Hannes Domani <ssbssa@yahoo.de>
Date:   Fri Apr 3 21:38:31 2020 +0200

    Fix attributes of typed enums of typedefs

    For this enum:
    typedef unsigned char byte;
    enum byte_enum : byte
    {
      byte_val = 128
    };

    The unsigned attribute is not set:
    (gdb) p byte_val
    $1 = -128

    That's because it uses the attributes of the 'byte' typedef for the enum.
    So this changes it to use the attributes of the underlying 'unsigned char'
    instead.

    gdb/ChangeLog:

    2020-04-03  Hannes Domani  <ssbssa@yahoo.de>

            PR gdb/25325
            * dwarf2/read.c (read_enumeration_type): Fix typed enum attributes.

    gdb/testsuite/ChangeLog:

    2020-04-03  Hannes Domani  <ssbssa@yahoo.de>

            PR gdb/25325
            * gdb.cp/typed-enum.cc: New test.
            * gdb.cp/typed-enum.exp: New file.

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