Issue #5677: Explicitly forbid write operations on read-only file objects,
and read operations on write-only file objects. On Windows, the system C
library would return a bogus result; on Solaris, it was possible to crash
the interpreter. Patch by Stefan Krah.
diff --git a/Misc/NEWS b/Misc/NEWS
index 9225c6f..66748ef 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,11 @@
Core and Builtins
-----------------
+- Issue #5677: Explicitly forbid write operations on read-only file objects,
+ and read operations on write-only file objects. On Windows, the system C
+ library would return a bogus result; on Solaris, it was possible to crash
+ the interpreter. Patch by Stefan Krah.
+
- Issue #7853: Normalize exceptions before they are passed to a context managers
__exit__ method.