Oops, remove an abort() I put in for debugging.
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 9de1e53..994456d 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -8107,7 +8107,6 @@
 
     if (flags & PyBUF_CHARACTER) {
         PyErr_SetString(PyExc_SystemError, "can't use str as char buffer");
-        abort();
         return -1;
     }
     return PyBuffer_FillInfo(view, (void *)self->str,