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Re: [bug-grep] search.c clean-up

From: Paul Eggert
Subject: Re: [bug-grep] search.c clean-up
Date: Tue, 23 Nov 2004 09:09:16 -0800
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux)

Jim Meyering <address@hidden> writes:

>> Note that some compiling environments might optimise away strlen
>> calls on constant strings, but only if they know at compile time
>> that they are going to be linked to a "strlen" that behaves like
>> the standard version of that function.  That's a dangerous
>> assumption in some environments.  The use of intermediate variables
>> can much more easily be optimised away.
> I see no problem with using strlen here.

I agree.  The C Standard does not allow user programs to redefine
strlen.  This is true even for programs that don't include <string.h>.
It's quite safe in practice to assume that strlen has the usual behavior.

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