Backport code from r65182:
Issue #2620: Overflow checking when allocating or reallocating memory
was not always being done properly in some python types and extension
modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
all been updated to perform better checks and places in the code that
would previously leak memory on the error path when such an allocation
failed have been fixed.
diff --git a/Misc/NEWS b/Misc/NEWS
index 0f36f17..222e408 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,13 @@
Core and builtins
-----------------
+- Issue #2620: Overflow checking when allocating or reallocating memory
+ was not always being done properly in some python types and extension
+ modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
+ all been updated to perform better checks and places in the code that
+ would previously leak memory on the error path when such an allocation
+ failed have been fixed.
+
- Issue #2242: Fix a crash when decoding invalid utf-7 input on certain
Windows / Visual Studio versions.