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1fe7c3b749
When enabling the Python limited API, pointers to Python C extension objects can no longer be implicitly converted to 'PyObject *' by the compiler. gdbpy_ref_policy is a templated class that provides a generic interface for incrementing and decrementing the reference counter on the given object. It is used as a specialisation of the policy parameter in gdb::ref_ptr, together with PyObject as the parameter type. As a result, gdbpy_ref_policy always expects an argument derived from PyObject. This patch fixes the resulting compilation issue by adding an explicit static_cast to 'PyObject *' before passing the value to Py_INCREF and Py_DECREF. As a side effect, these casts enforce, at compile time, that the template type passed to gdbpy_ref_policy is a subclass of PyObject. To provide a clearer diagnostic when an incorrect type is used, a static_assert is added to gdbpy_ref_policy, avoiding obscure errors originating from the static_cast. Finally, all C Python extension types passed to gdbpy_ref_policy are updated to inherit from PyObject. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=23830 Approved-By: Tom Tromey <tom@tromey.com>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/* Python interface to inferior events.
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Copyright (C) 2009-2026 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GDB_PYTHON_PY_EVENTS_H
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#define GDB_PYTHON_PY_EVENTS_H
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#include "command.h"
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#include "python-internal.h"
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#include "inferior.h"
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/* Stores a list of objects to be notified when the event for which this
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registry tracks occurs. */
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struct eventregistry_object : public PyObject
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{
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PyObject *callbacks;
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};
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/* Struct holding references to event registries both in python and c.
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This is meant to be a singleton. */
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struct events_object
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{
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#define GDB_PY_DEFINE_EVENT(name) \
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eventregistry_object *name;
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#include "py-all-events.def"
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#undef GDB_PY_DEFINE_EVENT
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PyObject *mod;
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};
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/* Python events singleton. */
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extern events_object gdb_py_events;
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extern eventregistry_object *create_eventregistry_object (void);
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extern bool evregpy_no_listeners_p (eventregistry_object *registry);
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#endif /* GDB_PYTHON_PY_EVENTS_H */
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