X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flibpspp%2Fcompiler.h;h=d22819446f5e5ee7a5eececf9c4f0e3ef261e758;hb=refs%2Ftags%2Ffc11-i386-build9;hp=44f22b39682a5656488126d86eef2ee5dad081b6;hpb=2322678e8fddbbf158b01b2720db2636404bba3b;p=pspp-builds.git

diff --git a/src/libpspp/compiler.h b/src/libpspp/compiler.h
index 44f22b39..d2281944 100644
--- a/src/libpspp/compiler.h
+++ b/src/libpspp/compiler.h
@@ -1,21 +1,18 @@
-/* PSPP - computes sample statistics.
-   Copyright (C) 2006 Free Software Foundation, Inc.
-   Written by Ben Pfaff <blp@gnu.org>.
+/* PSPP - a program for statistical analysis.
+   Copyright (C) 2006, 2009 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the GNU General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful, but
-   WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-   02110-1301, USA. */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
 #ifndef COMPILER_H
 #define COMPILER_H 1
@@ -32,16 +29,52 @@
 #define ATTRIBUTE(X)
 #endif
 
+/* Marks a function argument as possibly not used. */
 #define UNUSED ATTRIBUTE ((unused))
+
+/* Marks a function that will never return. */
 #define NO_RETURN ATTRIBUTE ((noreturn))
-#define PRINTF_FORMAT(FMT, FIRST) ATTRIBUTE ((format (printf, FMT, FIRST)))
-#define SCANF_FORMAT(FMT, FIRST) ATTRIBUTE ((format (scanf, FMT, FIRST)))
 
-/* This attribute was added late in the GCC 2.x cycle. */
+/* Mark a function as taking a printf- or scanf-like format
+   string as its FMT'th argument and that the FIRST'th argument
+   is the first one to be checked against the format string. */
+#define PRINTF_FORMAT(FMT, FIRST) ATTRIBUTE ((format (__printf__, FMT, FIRST)))
+#define SCANF_FORMAT(FMT, FIRST) ATTRIBUTE ((format (__scanf__, FMT, FIRST)))
+
+/* Tells the compiler that a function may be treated as if any
+   non-`NULL' pointer it returns cannot alias any other pointer
+   valid when the function returns. */
 #if __GNUC__ > 2
-#define MALLOC_LIKE ATTRIBUTE ((malloc))
+#define MALLOC_LIKE ATTRIBUTE ((__malloc__))
 #else
 #define MALLOC_LIKE
 #endif
 
+/* This attribute was added in GCC 4.0. */
+#if __GNUC__ >= 4
+#define WARN_UNUSED_RESULT ATTRIBUTE ((warn_unused_result))
+#else
+#define WARN_UNUSED_RESULT
+#endif
+
+/* This attribute indicates that the function does not examine
+   any values except its arguments, and has no effects except the
+   return value.  A function that has pointer arguments and
+   examines the data pointed to must _not_ be declared
+   `const'.  */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5)
+#define CONST_FUNCTION ATTRIBUTE ((const))
+#else
+#define CONST_FUNCTION
+#endif
+
+/* This attribute indicates that the function has no effects
+   except the return value and its return value depends only on
+   the parameters and/or global variables. */
+#if __GNUC__ > 2
+#define PURE_FUNCTION ATTRIBUTE ((pure))
+#else
+#define PURE_FUNCTION
+#endif
+
 #endif /* compiler.h */