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gdb: Misc fixes and enhancements

Thibault Saunier requested to merge thiblahute/gstreamer:gdb_enhancement_and_fixes into main

  • gdb: Workaround optimized out quark_seq_id
    On fedora 38 (and it was the case in previous releases), the
    quark_seq_id is optimized out so getting quarks from the
    global variable always failed. This patch works around that by assuming
    it is a valid quark whenever the quark_seq_id is not accessible.

    This issue often manifested as Python Exception <class 'TypeError'>:
    can only concatenate str (not "NoneType") to str when debugging as
    other parts of the code assume that getting the quark for a GType name
    will work.

    Same as https://gitlab.gnome.org/GNOME/glib/-/merge_requests/3559

  • gdb: Fix python style

  • gdb: Handle the case where the fundamental type table is optimized out

  • gdb: Fix issue with undeclared variable

  • gdb: Fix the way we wrap segments
    Without that we end up with a reference to a GBoxed instead of the actual segment making the rest of the code fail

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