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Date: Thu, 7 Aug 2008 11:54:10 -0500 (CDT)
From: "Sean C. Farley" <scf@FreeBSD.org>
To: Gabor Kovesdan <gabor@kovesdan.org>
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Cc: fjoe@FreeBSD.org, hackers@FreeBSD.org
Subject: Re: strange issue reading /dev/null
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On Thu, 7 Aug 2008, Gabor Kovesdan wrote:

> Sean C. Farley ha scritto:
>> You are testing c which has not been set.  It works OK if you set c
>> then do the test:
>> 
>> +       c = fgetc(f);
>>         if (c != EOF)
>> -               printf("%c\n", fgetc(f));
>> +               printf("%c\n", c);
> Yes, you are right, this is what I meant, I'm just a bit
> disorganised....
> Thanks!

You are welcome.

Actually, what I found odd was that the base gcc did not warn about
using an uninitialized variable using -Wall.

Obviously, test fopen() and fgetc() return codes correctly as others
have noted.  I just assume you were not in your test program.

Sean
-- 
scf@FreeBSD.org