[Bug gdb/31853] GDB's use of iconv does not work with macOS Sonoma

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

https://sourceware.org/bugzilla/show_bug.cgi?id=31853

--- Comment #7 from Sourceware Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Ciaran Woodward <ciaran@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=bb2981798f54e6eb30e46fb11cda2ca49561ffd3

commit bb2981798f54e6eb30e46fb11cda2ca49561ffd3
Author: Ciaran Woodward <ciaranwoodward@xmos.com>
Date:   Mon Jun 10 16:52:37 2024 +0100

    Fix printing strings on macOS Sonoma

    On macOS sonoma, printing a string would only print the first
    character. For instance, if there was a 'const char *s = "foobar"',
    then the 'print s' command would print '$1 = "f"' rather than the
    expected '$1 = "foobar"'.

    It seems that this is due to Apple silently replacing the version
    of libiconv they ship with the OS to one which silently fails to
    handle the 'outbytesleft' parameter correctly when using 'wchar_t'
    as a target encoding.

    This specifically causes issues when using iterating through a
    string as wchar_iterator does.

    This bug is visible even if you build for an old version of macOS,
    but then run on Sonoma. Therefore this fix in the code applies
    generally to macOS, and not specific to building on Sonoma. Building
    for an older version and expecting forwards compatibility is a
    common situation on macOS.

    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31853

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