commit 4c8f09d7cef8c7aa07d5b5232b5b64f63819a743
author Serhiy Storchaka <storchaka@gmail.com> Fri Jul 10 23:26:06 2020 +0300
committer GitHub <noreply@github.com> Fri Jul 10 23:26:06 2020 +0300
tree 2d90e13b6dc939f019a6cafc45ea604cbb90f584
parent 9650fe0197779b4dfded94be111e39c5810f098f

bpo-36346: Make using the legacy Unicode C API optional (GH-21437)

Add compile time option USE_UNICODE_WCHAR_CACHE. Setting it to 0
makes the interpreter not using the wchar_t cache and the legacy Unicode C API.

Include/cpython/unicodeobject.h

diff --git a/Include/cpython/unicodeobject.h b/Include/cpython/unicodeobject.h
index 49ad32d..615b4a9 100644
--- a/Include/cpython/unicodeobject.h
+++ b/Include/cpython/unicodeobject.h
@@ -11,7 +11,9 @@
 
 /* --- Internal Unicode Operations ---------------------------------------- */
 
-#define USE_UNICODE_WCHAR_CACHE 1
+#ifndef USE_UNICODE_WCHAR_CACHE
+#  define USE_UNICODE_WCHAR_CACHE 1
+#endif /* USE_UNICODE_WCHAR_CACHE */
 
 /* Since splitting on whitespace is an important use case, and
    whitespace in most situations is solely ASCII whitespace, we