Messages in this thread | | | Date | Mon, 22 Nov 2004 01:02:53 +0000 | From | Matthew Wilcox <> | Subject | Re: [PATCH] Remove pointless <0 comparison for unsigned variable in fs/fcntl.c |
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On Sun, Nov 21, 2004 at 11:55:23PM +0100, Jesper Juhl wrote: > This patch removes a pointless comparison. "arg" is an unsigned long, thus > it can never be <0, so testing that is pointless. > > Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> > > case F_SETSIG: > /* arg == 0 restores default behaviour. */ > - if (arg < 0 || arg > _NSIG) { > + if (arg > _NSIG) { > break;
I've seen patches like this before. I'm generally in favour of removing the unnecessary test, but Linus rejected it on the grounds the compiler shouldn't be warning about it and it's better to be more explicit about the range test. Maybe he's changed his mind between then and now ;-)
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