potential nullptr dereference + use of uninitialized memory in fileutils

Bug report

Lines 2161 to 2162 in 6daf42b

    
           join_relfile(filename, bufsize, dirname, relfile); 
        
           return filename;

can lead to use of uninitialized memory when join_relfile fails.

Lines 2197 to 2199 in 6daf42b

    
           _Py_normpath(wchar_t *path, Py_ssize_t size) 
        
           { 
        
               if (!path[0] || size == 0) {

in combination with

Line 450 in 6daf42b

path2 = _Py_normpath(_Py_join_relfile(path, resolved), -1);

leads to a nullptr dereference.

gh-102281: Fix potential nullptr dereference + use of uninitialized m…

Thanks for the fix! Looks like this could still use backports

Thanks for the reminder

[3.11] gh-102281: Fix potential nullptr dereference + use of uninitia… (

Thanks again :-)

pythongh-102281: Fix potential nullptr dereference + use of uninitial…

	join_relfile(filename, bufsize, dirname, relfile);
	return filename;

	_Py_normpath(wchar_t *path, Py_ssize_t size)
	{
	if (!path[0] \|\| size == 0) {