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authorAndrew Morton <akpm@linux-foundation.org>2008-04-28 02:13:48 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:27 -0700
commited6b9b97f42c091630335bfb71a2931e6f86388b (patch)
tree1c003a652308955da0677f8d05b6ad110f5dee48
parent037f436f525dac36c9f5fd5c5054518a63debb3e (diff)
alpha: teach the compiler that BUG doesn't return
Fix things like this: security/selinux/netnode.c: In function 'sel_netnode_find': security/selinux/netnode.c:126: warning: 'idx' may be used uninitialized in this function security/selinux/netnode.c: In function 'sel_netnode_sid': security/selinux/netnode.c:225: warning: 'ret' may be used uninitialized in this function security/selinux/netnode.c:168: warning: 'idx' may be used uninitialized in this function due to code correctly not expecting BUG() to return. For some reason this reduces the object code size for that particular file. Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/asm-alpha/bug.h16
1 files changed, 13 insertions, 3 deletions
diff --git a/include/asm-alpha/bug.h b/include/asm-alpha/bug.h
index 39a3e2a5017..695a5ee4b5d 100644
--- a/include/asm-alpha/bug.h
+++ b/include/asm-alpha/bug.h
@@ -1,14 +1,24 @@
#ifndef _ALPHA_BUG_H
#define _ALPHA_BUG_H
+#include <linux/linkage.h>
+
#ifdef CONFIG_BUG
#include <asm/pal.h>
/* ??? Would be nice to use .gprel32 here, but we can't be sure that the
function loaded the GP, so this could fail in modules. */
-#define BUG() \
- __asm__ __volatile__("call_pal %0 # bugchk\n\t"".long %1\n\t.8byte %2" \
- : : "i" (PAL_bugchk), "i"(__LINE__), "i"(__FILE__))
+static inline void ATTRIB_NORET __BUG(const char *file, int line)
+{
+ __asm__ __volatile__(
+ "call_pal %0 # bugchk\n\t"
+ ".long %1\n\t.8byte %2"
+ : : "i" (PAL_bugchk), "i"(line), "i"(file));
+ for ( ; ; )
+ ;
+}
+
+#define BUG() __BUG(__FILE__, __LINE__)
#define HAVE_ARCH_BUG
#endif