$NetBSD: patch-libstdc++-v3_include_c_global_cwchar,v 1.1 2024/04/01 14:33:58 js Exp $

--- libstdc++-v3/include/c_global/cwchar.orig	2023-07-07 07:08:22.000000000 +0000
+++ libstdc++-v3/include/c_global/cwchar
@@ -47,6 +47,10 @@
 #ifndef _GLIBCXX_CWCHAR
 #define _GLIBCXX_CWCHAR 1
 
+#ifdef __QNX__
+#define __CORRECT_ISO_CPP_WCHAR_H_PROTO
+#endif
+
 // Need to do a bit of trickery here with mbstate_t as char_traits
 // assumes it is in wchar.h, regardless of wchar_t specializations.
 #ifndef _GLIBCXX_HAVE_MBSTATE_T