[Bug python/13326] Need support for C++ method call for a gdb.Value object from within python

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

https://sourceware.org/bugzilla/show_bug.cgi?id=13326

--- Comment #4 from Sourceware Commits <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=2e08907d0672711617f71ef4604df190106b992e

commit 2e08907d0672711617f71ef4604df190106b992e
Author: Hannes Domani <ssbssa@yahoo.de>
Date:   Thu Feb 8 20:09:25 2024 +0100

    Allow calling of C++ methods from python

    Currently it's not possible to call C++ methods from python.
    Using this example:
    ```
    class B
    {
      static int static_func ();
      int arg0_func ();
      int arg1_func (int arg1);
      int arg2_func (int arg1, int arg2);
    };

    B *b_obj = new B;
    ```

    Trying to call B::static_func gives this error:
    ```
    (gdb) py b_obj = gdb.parse_and_eval('b_obj')
    (gdb) py print(b_obj['static_func']())
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
    RuntimeError: Value is not callable (not TYPE_CODE_FUNC).
    Error while executing Python code.
    ```

    TYPE_CODE_METHOD was simply missing as a possible type in
    valpy_call, now the same is possible:
    ```
    (gdb) py b_obj = gdb.parse_and_eval('b_obj')
    (gdb) py print(b_obj['static_func']())
    1111
    ```

    Note that it's necessary to explicitely add the this pointer
    as the first argument in a call of non-static methods:
    ```
    (gdb) py print(b_obj['arg0_func']())
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
    gdb.error: Too few arguments in function call.
    Error while executing Python code.
    (gdb) py print(b_obj['arg0_func'](b_obj))
    198
    ```

    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=13326
    Approved-By: Tom Tromey <tom@tromey.com>

-- 
You are receiving this mail because:
You are on the CC list for the bug.