From 497888cf69bf607ac1fe061a6437e0a670b0022f Mon Sep 17 00:00:00 2001
From: Phil Carmody <ext-phil.2.carmody@nokia.com>
Date: Thu, 14 Jul 2011 15:07:13 +0300
Subject: treewide: fix potentially dangerous trailing ';' in #defined
values/expressions
All these are instances of
#define NAME value;
or
#define NAME(params_opt) value;
These of course fail to build when used in contexts like
if(foo $OP NAME)
while(bar $OP NAME)
and may silently generate the wrong code in contexts such as
foo = NAME + 1; /* foo = value; + 1; */
bar = NAME - 1; /* bar = value; - 1; */
baz = NAME & quux; /* baz = value; & quux; */
Reported on comp.lang.c,
Message-ID: <ab0d55fe-25e5-482b-811e-c475aa6065c3@c29g2000yqd.googlegroups.com>
Initial analysis of the dangers provided by Keith Thompson in that thread.
There are many more instances of more complicated macros having unnecessary
trailing semicolons, but this pile seems to be all of the cases of simple
values suffering from the problem. (Thus things that are likely to be found
in one of the contexts above, more complicated ones aren't.)
Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---
arch/um/sys-i386/signal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'arch/um')
diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c
index 129647375a6c..89a46626bfd8 100644
--- a/arch/um/sys-i386/signal.c
+++ b/arch/um/sys-i386/signal.c
@@ -58,7 +58,7 @@ static inline unsigned long twd_fxsr_to_i387(struct user_fxsr_struct *fxsave)
unsigned long ret = 0xffff0000;
int i;
-#define FPREG_ADDR(f, n) ((char *)&(f)->st_space + (n) * 16);
+#define FPREG_ADDR(f, n) ((char *)&(f)->st_space + (n) * 16)
for (i = 0; i < 8; i++) {
if (twd & 0x1) {
--
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