linux-kernel - [PATCH v5 4/25] compiler-gcc{3,4}.h: Use GCC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <1348615825-10094-1-git-send-email-daniel.santos@pobox.com>
Date:	Tue, 25 Sep 2012 18:30:25 -0500
From:	Daniel Santos <daniel.santos@...ox.com>
To:	Daniel Santos <daniel.santos@...ox.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Howells <dhowells@...hat.com>,
	David Daney <david.daney@...ium.com>,
	David Rientjes <rientjes@...gle.com>,
	Pavel Pisa <pisa@....felk.cvut.cz>,
	Richard Weinberger <richard@....at>,
	LKML <linux-kernel@...r.kernel.org>,
	Michel Lespinasse <walken@...gle.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Rik van Riel <riel@...hat.com>
Subject: [PATCH v5 4/25] compiler-gcc{3,4}.h: Use GCC_VERSION macro

Using GCC_VERSION reduces complexity, is easier to read and is GCC's
recommended mechanism for doing version checks. (Just don't ask me why
they didn't define it in the first place.)  This also makes it easy to
merge compiler-gcc{3,4}.h should somebody want to.

Signed-off-by: Daniel Santos <daniel.santos@...ox.com>
---
 include/linux/compiler-gcc3.h |    8 ++++----
 include/linux/compiler-gcc4.h |   12 ++++++------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h
index 37d4124..7d89feb 100644
--- a/include/linux/compiler-gcc3.h
+++ b/include/linux/compiler-gcc3.h
@@ -2,22 +2,22 @@
 #error "Please don't include <linux/compiler-gcc3.h> directly, include <linux/compiler.h> instead."
 #endif
 
-#if __GNUC_MINOR__ < 2
+#if GCC_VERSION < 30200
 # error Sorry, your compiler is too old - please upgrade it.
 #endif
 
-#if __GNUC_MINOR__ >= 3
+#if GCC_VERSION >= 30300
 # define __used			__attribute__((__used__))
 #else
 # define __used			__attribute__((__unused__))
 #endif
 
-#if __GNUC_MINOR__ >= 4
+#if GCC_VERSION >= 30400
 #define __must_check		__attribute__((warn_unused_result))
 #endif
 
 #ifdef CONFIG_GCOV_KERNEL
-# if __GNUC_MINOR__ < 4
+# if GCC_VERSION < 30400
 #   error "GCOV profiling support for gcc versions below 3.4 not included"
 # endif /* __GNUC_MINOR__ */
 #endif /* CONFIG_GCOV_KERNEL */
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index a334107..7ad60cd 100644
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -4,7 +4,7 @@
 
 /* GCC 4.1.[01] miscompiles __weak */
 #ifdef __KERNEL__
-# if __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ <= 1
+# if GCC_VERSION >= 40100 &&  GCC_VERSION <= 40101
 #  error Your version of gcc miscompiles the __weak directive
 # endif
 #endif
@@ -13,11 +13,11 @@
 #define __must_check 		__attribute__((warn_unused_result))
 #define __compiler_offsetof(a,b) __builtin_offsetof(a,b)
 
-#if __GNUC_MINOR__ > 0
+#if GCC_VERSION >= 40102
 # define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
 #endif
 
-#if __GNUC_MINOR__ >= 3
+#if GCC_VERSION >= 40300
 /* Mark functions as cold. gcc will assume any path leading to a call
    to them will be unlikely.  This means a lot of manual unlikely()s
    are unnecessary now for any paths leading to the usual suspects
@@ -39,9 +39,9 @@
 # define __compiletime_warning(message) __attribute__((warning(message)))
 # define __compiletime_error(message) __attribute__((error(message)))
 #endif /* __CHECKER__ */
-#endif /* __GNUC_MINOR__ >= 3 */
+#endif /* GCC_VERSION >= 40300 */
 
-#if __GNUC_MINOR__ >= 5
+#if GCC_VERSION >= 40500
 /*
  * Mark a position in code as unreachable.  This can be used to
  * suppress control flow warnings after asm blocks that transfer
@@ -56,5 +56,5 @@
 /* Mark a function definition as prohibited from being cloned. */
 #define __noclone	__attribute__((__noclone__))
 
-#endif /* __GNUC_MINOR__ >= 5 */
+#endif /* GCC_VERSION >= 40500 */
 
-- 
1.7.3.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/