Issue #1548891: The cStringIO.StringIO() constructor now encodes unicode
arguments with the system default encoding just like the write() method
does, instead of converting it to a raw buffer.
diff --git a/Modules/cStringIO.c b/Modules/cStringIO.c
index be9ad50..89f1dd6 100644
--- a/Modules/cStringIO.c
+++ b/Modules/cStringIO.c
@@ -661,7 +661,11 @@
char *buf;
Py_ssize_t size;
- if (PyObject_AsReadBuffer(s, (const void **)&buf, &size)) {
+ if (PyUnicode_Check(s)) {
+ if (PyObject_AsCharBuffer(s, (const char **)&buf, &size) != 0)
+ return NULL;
+ }
+ else if (PyObject_AsReadBuffer(s, (const void **)&buf, &size)) {
PyErr_Format(PyExc_TypeError, "expected read buffer, %.200s found",
s->ob_type->tp_name);
return NULL;