Have Bison grammars parsed by a Bison grammar.

[bison.git] / src / system.h

diff --git a/src/system.h b/src/system.h
index 8cd8bba1913a9447fdd8c9336621e2d4d8a3c994..bdf6becb9c5d7e94352fb9da5c8349ba30c77e17 100644 (file)
--- a/src/system.h
+++ b/src/system.h
@@ -144,14 +144,22 @@ void *memrchr PARAMS ((const void *s, int c, size_t n));
 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
 #  define __attribute__(Spec) /* empty */
 # endif
+#endif
+
 /* The __-protected variants of `format' and `printf' attributes
    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
-#  define __format__ format
-#  define __printf__ printf
-# endif
+#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+# define __format__ format
+# define __printf__ printf
 #endif
 
+#ifndef ATTRIBUTE_NORETURN
+# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
+#endif
+
+#ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#endif
 
 /*------.
 | NLS.  |