Warning: `Modules/_io/fileio.c:175:9: warning: ‘exc’ may be used uninitialized [-Wmaybe-uninitialized]`

[sobolevn]

Bug report

This code produces a warning:

cpython/Modules/_io/fileio.c

Lines 160 to 176 in a34e4db

	PyObject *exc;
	if (res == NULL) {
	exc = PyErr_GetRaisedException();
	}
	if (self->finalizing) {
	PyObject *r = fileio_dealloc_warn(self, (PyObject *) self);
	if (r) {
	Py_DECREF(r);
	}
	else {
	PyErr_Clear();
	}
	}
	rc = internal_close(self);
	if (res == NULL) {
	_PyErr_ChainExceptions1(exc);
	}

Link: https://buildbot.python.org/all/#/builders/1061/builds/695/steps/7/logs/warnings__145_

I think that it is enough to add = NULL; to PyObject *exc;.

Linked PRs

• gh-114286: Fix maybe-uninitialized warning in Modules/_io/fileio.c #114287
• [3.12] gh-114286: Fix maybe-uninitialized warning in Modules/_io/fileio.c (GH-114287) #114288