commit 5ff7132313eb651107b179d20218dfe5d4e47f13
author Victor Stinner <victor.stinner@gmail.com> Wed Jun 21 14:39:22 2017 +0200
committer GitHub <noreply@github.com> Wed Jun 21 14:39:22 2017 +0200
tree c75f190454b750d8b03fdf05d5ed5c0d621e499d
parent f3e8209152dffd201620c5b5936946a9250ac359

bpo-30694: Upgrade Modules/expat/ to libexpat 2.2.1 (#2300)

New file: Modules/expat/siphash.h.

Modules/expat/expat_external.h

diff --git a/Modules/expat/expat_external.h b/Modules/expat/expat_external.h
index 4860c57..4c9e5ea 100644
--- a/Modules/expat/expat_external.h
+++ b/Modules/expat/expat_external.h
@@ -97,7 +97,10 @@
 #endif
 
 #ifdef XML_UNICODE_WCHAR_T
-#define XML_UNICODE
+# define XML_UNICODE
+# if defined(__SIZEOF_WCHAR_T__) && (__SIZEOF_WCHAR_T__ != 2)
+#  error "sizeof(wchar_t) != 2; Need -fshort-wchar for both Expat and libc"
+# endif
 #endif
 
 #ifdef XML_UNICODE     /* Information is UTF-16 encoded. */