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From: "Kevin P. Fleming" <kpfleming@cox.net>
To: LKML <linux-kernel@vger.kernel.org>, Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH] new ioctl type checking causes gcc warning
Date: Fri, 12 Sep 2003 12:13:08 -0700	[thread overview]
Message-ID: <3F621AC4.4070507@cox.net> (raw)

Submitted by: Kevin P. Fleming (kpfleming at cox dot net)
Date: 2003-09-12
Initial Package Version: 2.6.0-test5
Origin: Kevin P. Fleming (kpfleming at cox dot net)
Description: The definition of __invalid_size_argument_for_IOC is signed,
              which causes an signed/unsigned comparison error to be
              emitted by GCC (at least for 3.3.1).

--- linux-2.6.0-test5/include/asm-i386/ioctl.h~	Mon Sep  8 12:49:52 2003
+++ linux-2.6.0-test5/include/asm-i386/ioctl.h	Fri Sep 12 11:58:41 2003
@@ -53,7 +53,7 @@
  	 ((size) << _IOC_SIZESHIFT))

  /* provoke compile error for invalid uses of size argument */
-extern int __invalid_size_argument_for_IOC;
+extern unsigned int __invalid_size_argument_for_IOC;
  #define _IOC_TYPECHECK(t) \
  	((sizeof(t) == sizeof(t[1]) && \
  	  sizeof(t) < (1 << _IOC_SIZEBITS)) ? \


             reply	other threads:[~2003-09-12 19:13 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-09-12 19:13 Kevin P. Fleming [this message]
2003-09-12 20:02 ` [PATCH] new ioctl type checking causes gcc warning Andreas Schwab
2003-09-12 12:53   ` Arnd Bergmann
2003-09-12 23:43     ` Kevin P. Fleming
2003-09-13  0:22       ` Arnd Bergmann
2003-09-13  0:31         ` Kevin P. Fleming
2003-09-13 11:05           ` Arnd Bergmann
2003-09-13 13:17             ` Kevin P. Fleming
2003-09-13 19:10       ` Jamie Lokier

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