[Bug exp/18285] ptype expr-with-xmethod -> SEGV

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

https://sourceware.org/bugzilla/show_bug.cgi?id=18285

--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-7.9-branch branch has been updated by Doug Evans
<devans@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6b2a76d583a91ae9dad0653c60c91b72f07ff941

commit 6b2a76d583a91ae9dad0653c60c91b72f07ff941
Author: Doug Evans <dje@google.com>
Date:   Tue May 12 09:18:06 2015 -0700

    PR python/18285

    gdb/ChangeLog:

        PR python/18285
        * NEWS: Document new gdb.XMethodWorker.get_result_type method.
        * eval.c (evaluate_subexp_standard) <OP_FUNCALL>: Handle
        EVAL_AVOID_SIDE_EFFECTS for xmethods.
        * extension-priv.h (struct extension_language_ops)
        <get_xmethod_result_type>: New member.
        * extension.c (get_xmethod_result_type): New function.
        * extension.h (get_xmethod_result_type): Declare.
        * python/py-xmethods.c (get_result_type_method_name): New static
        global.
        (py_get_result_type_method_name): Ditto.
        (gdbpy_get_xmethod_result_type): New function.
        (gdbpy_initialize_xmethods): Initialize py_get_result_type_method_name.
        * python/python-internal.h (gdbpy_get_xmethod_result_type): Declare.
        * python/python.c (python_extension_ops): Add
        gdbpy_get_xmethod_result_type.
        * python/lib/gdb/xmethod.py (XMethodWorker): Add get_result_type.
        * valarith.c (value_x_binop): Handle EVAL_AVOID_SIDE_EFFECTS for
        xmethods.
        (value_x_unop): Ditto.
        * value.c (result_type_of_xmethod): New function.
        * value.h (result_type_of_xmethod): Declare.

    gdb/testsuite/ChangeLog:

        * gdb.python/py-xmethods.exp: Add ptype tests.
        * gdb.python/py-xmethods.py (E_method_char_worker): Add
        get_result_type method.

    gdb/doc/ChangeLog:

        * python.texi (Xmethod API) <gdb.XMethodWorker.get_result_type>:
        Document.
        (Writing an Xmethod): Add get_result_type to example.

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