X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/fecc10cd9566cfd5dee3c9bada3ebe52de7a30bc..b5480d74b8162a2827c357b62dfacfedf1b93a96:/src/system.h

diff --git a/src/system.h b/src/system.h
index 6dd83bcf..bdf6becb 100644
--- 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.  |
@@ -238,21 +246,15 @@ do {								\
   /* VMS. */
 # define EXT_TAB	"_tab"
 # define EXT_OUTPUT	".output"
-# define EXT_STYPE_H	"_stype"
-# define EXT_GUARD_C	"_guard"
 #else /* ! VMS */
 # ifdef MSDOS
    /* MS DOS. */
 #  define EXT_TAB	"_tab"
 #  define EXT_OUTPUT	".out"
-#  define EXT_STYPE_H	".sth"
-#  define EXT_GUARD_C	".guc"
 # else /* ! MSDOS */
   /* Standard. */
 #  define EXT_TAB	".tab"
 #  define EXT_OUTPUT	".output"
-#  define EXT_STYPE_H	".stype"
-#  define EXT_GUARD_C	".guard"
 # endif /* ! MSDOS */
 #endif /* ! VMS */