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$NetBSD: patch-ab,v 1.3 2005/03/16 19:06:10 rillig Exp $
The C++ standard library headers sometimes include <_G_config.h>, which
undefines the NULL macro and includes <stddef.h> afterwards. But if the
<stddef.h> header had been included once before, the GNU C preprocessor
doesn't include it a second time.
--- src/sys.h.orig Sun Jun 13 17:37:06 2004
+++ src/sys.h Wed Mar 16 19:40:44 2005
@@ -23,6 +23,11 @@
#ifndef SYS_H
#define SYS_H
+/* This is needed to have a NULL macro */
+#if defined(__NetBSD__) && defined(__GNUC__) && ((__GNUC__) < 3)
+# include <stl_config.h>
+#endif
+
//
// The build system forgets to add the correct CXXFLAGS (like for
// example -pthread for g++). Therefore define this here instead.
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