_Py_wrealpath() requires the size of the output buffer
diff --git a/Python/fileutils.c b/Python/fileutils.c
index bd6ab5d..502868f 100644
--- a/Python/fileutils.c
+++ b/Python/fileutils.c
@@ -321,7 +321,8 @@
#ifdef HAVE_REALPATH
wchar_t*
-_Py_wrealpath(const wchar_t *path, wchar_t *resolved_path)
+_Py_wrealpath(const wchar_t *path,
+ wchar_t *resolved_path, size_t resolved_path_size)
{
char *cpath;
char cresolved_path[PATH_MAX];
@@ -336,7 +337,7 @@
PyMem_Free(cpath);
if (res == NULL)
return NULL;
- r = mbstowcs(resolved_path, cresolved_path, PATH_MAX);
+ r = mbstowcs(resolved_path, cresolved_path, resolved_path_size);
if (r == (size_t)-1 || r >= PATH_MAX) {
errno = EINVAL;
return NULL;