Issue 34992: many warnings with f28 and gcc 8.1.1

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This issue has been migrated to GitHub: https://github.com/python/cpython/issues/79173

classification

Title:	many warnings with f28 and gcc 8.1.1
Type:		Stage:	resolved
Components:		Versions:	Python 3.8

process

Status:	closed	Resolution:	duplicate
Dependencies:		Superseder:	Invalid function cast warnings with gcc 8 for METH_NOARGS View: 33012
Assigned To:		Nosy List:	matrixise
Priority:	normal	Keywords:

Created on 2018-10-15 13:23 by matrixise, last changed 2022-04-11 14:59 by admin. This issue is now closed.

Messages (1)
msg327752 - (view)	Author: Stéphane Wirtel (matrixise) *	Date: 2018-10-15 13:23
I use Fedora 28 and gcc (GCC) 8.1.1 20180712 (Red Hat 8.1.1-5) and I get a lot of warnings, with the standard config of Python (./configure) Objects/call.c: In function '_PyMethodDef_RawFastCallDict': Objects/call.c:515:24: warning: cast between incompatible function types from 'PyCFunction' {aka 'struct _object * ()(struct _object , struct _object )'} to 'PyObject ()(PyObject , PyObject , PyObject )' {aka 'struct _object * ()(struct _object , struct _object , struct _object )'} [-Wcast-function-type] result = ((PyCFunctionWithKeywords)meth) (self, argstuple, kwargs); ^ Objects/call.c:530:20: warning: cast between incompatible function types from 'PyCFunction' {aka 'struct _object ()(struct _object , struct _object )'} to 'PyObject ()(PyObject , PyObject * const, Py_ssize_t)' {aka 'struct _object ()(struct _object , struct _object * const, long int)'} [-Wcast-function-type] result = ((_PyCFunctionFast)meth) (self, args, nargs); ^ Objects/call.c:538:49: warning: cast between incompatible function types from 'PyCFunction' {aka 'struct _object * ()(struct _object , struct _object )'} to 'PyObject ()(PyObject , PyObject * const, Py_ssize_t, PyObject )' {aka 'struct _object * ()(struct _object , struct _object * const, long int, struct _object )'} [-Wcast-function-type] _PyCFunctionFastWithKeywords fastmeth = (_PyCFunctionFastWithKeywords)meth; .... +- 827 warnings

msg327752 - (view)

Author: Stéphane Wirtel (matrixise) * (Python committer)

Date: 2018-10-15 13:23

I use Fedora 28 and gcc (GCC) 8.1.1 20180712 (Red Hat 8.1.1-5)

and I get a lot of warnings, with the standard config of Python (./configure)

Objects/call.c: In function '_PyMethodDef_RawFastCallDict':
Objects/call.c:515:24: warning: cast between incompatible function types from 'PyCFunction' {aka 'struct _object * (*)(struct _object *, struct _object *)'} to 'PyObject * (*)(PyObject *, PyObject *, PyObject *)' {aka 'struct _object * (*)(struct _object *, struct _object *, struct _object *)'} [-Wcast-function-type]
             result = (*(PyCFunctionWithKeywords)meth) (self, argstuple, kwargs);
                        ^
Objects/call.c:530:20: warning: cast between incompatible function types from 'PyCFunction' {aka 'struct _object * (*)(struct _object *, struct _object *)'} to 'PyObject * (*)(PyObject *, PyObject * const*, Py_ssize_t)' {aka 'struct _object * (*)(struct _object *, struct _object * const*, long int)'} [-Wcast-function-type]
         result = (*(_PyCFunctionFast)meth) (self, args, nargs);
                    ^
Objects/call.c:538:49: warning: cast between incompatible function types from 'PyCFunction' {aka 'struct _object * (*)(struct _object *, struct _object *)'} to 'PyObject * (*)(PyObject *, PyObject * const*, Py_ssize_t,  PyObject *)' {aka 'struct _object * (*)(struct _object *, struct _object * const*, long int,  struct _object *)'} [-Wcast-function-type]
         _PyCFunctionFastWithKeywords fastmeth = (_PyCFunctionFastWithKeywords)meth;

....

+- 827 warnings

History
Date	User	Action	Args
2022-04-11 14:59:07	admin	set	github: 79173
2018-10-15 13:29:22	vstinner	set	status: open -> closed superseder: Invalid function cast warnings with gcc 8 for METH_NOARGS resolution: duplicate stage: resolved
2018-10-15 13:23:54	matrixise	create