When accessing the .value attribute of a c_wchar_p instance, and the
instance does not point to a valid wchar_t zero-terminated string,
raise a ValueError. c_char_p does this already.
The ValueError message now contains the correct pointer address.
Will backport to release25-maint.
diff --git a/Modules/_ctypes/cfield.c b/Modules/_ctypes/cfield.c
index e7bf274..6b0a526 100644
--- a/Modules/_ctypes/cfield.c
+++ b/Modules/_ctypes/cfield.c
@@ -1366,7 +1366,7 @@
if (IsBadStringPtrA(*(char **)ptr, -1)) {
PyErr_Format(PyExc_ValueError,
"invalid string pointer %p",
- ptr);
+ *(char **)ptr);
return NULL;
}
#endif
@@ -1451,9 +1451,17 @@
{
wchar_t *p;
p = *(wchar_t **)ptr;
- if (p)
+ if (p) {
+#if defined(MS_WIN32) && !defined(_WIN32_WCE)
+ if (IsBadStringPtrW(*(wchar_t **)ptr, -1)) {
+ PyErr_Format(PyExc_ValueError,
+ "invalid string pointer %p",
+ *(wchar_t **)ptr);
+ return NULL;
+ }
+#endif
return PyUnicode_FromWideChar(p, wcslen(p));
- else {
+ } else {
Py_INCREF(Py_None);
return Py_None;
}