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authorPhil Carmody <ext-phil.2.carmody@nokia.com>2011-07-14 15:07:13 +0300
committerJiri Kosina <jkosina@suse.cz>2011-07-21 14:10:00 +0200
commit497888cf69bf607ac1fe061a6437e0a670b0022f (patch)
treeac0897eff214f09c89d5f4fbc3c03ef9d010a83c /drivers/isdn
parent06b72d06d6b182bdaaaec686dbd8b602949521ee (diff)
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>
Diffstat (limited to 'drivers/isdn')
-rw-r--r--drivers/isdn/i4l/isdn_bsdcomp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/isdn/i4l/isdn_bsdcomp.c b/drivers/isdn/i4l/isdn_bsdcomp.c
index 02d9918705dd..aa0b6a6f5ef4 100644
--- a/drivers/isdn/i4l/isdn_bsdcomp.c
+++ b/drivers/isdn/i4l/isdn_bsdcomp.c
@@ -155,7 +155,7 @@ struct bsd_db {
#define LAST 255
#define MAXCODE(b) ((1 << (b)) - 1)
-#define BADCODEM1 MAXCODE(MAX_BSD_BITS);
+#define BADCODEM1 MAXCODE(MAX_BSD_BITS)
#define BSD_HASH(prefix,suffix,hshift) ((((unsigned long)(suffix))<<(hshift)) \
^ (unsigned long)(prefix))