Issue #7117: Use PyOS_string_to_double instead of PyOS_ascii_strtod in
complexobject.c.  Also remove length restriction on unicode inputs to
the complex constructor.
diff --git a/Misc/NEWS b/Misc/NEWS
index 368ed3e..6d48714 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 Core and Builtins
 -----------------
 
+- Remove length limitation when constructing a complex number from a
+  unicode string.
+
 - Removed _PyOS_double_to_string. Use PyOS_double_to_string
   instead. This is in preparation for (but not strictly related to)
   issue #7117, short float repr.