Sean C. Farley ha scritto:
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.
Actaually, I wanted to track down why BSD grep echoed the y with the
diaresis when I executed grep . </dev/null that's why I wrote this test
program, but I should have taken more care. As a result, I could find
the bug in grep, it was not enough to check !feof() in the for
iteration, I needed to check for EOF right after calling fgetc() and
break if it matched.
Gábor
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