Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Is this a compiler bug?

Author: Heiner Marxen

Date: 09:36:31 10/27/03

Go up one level in this thread


On October 25, 2003 at 17:44:38, Tord Romstad wrote:

>On October 25, 2003 at 15:11:45, Dieter Buerssner wrote:
>
>>On October 25, 2003 at 09:49:58, Tord Romstad wrote:
>>
>>>I compiled without -fbranch-prediction (but this makes the engine much slower).
>>>
>>>After spending a few hours debugging, I found that the crash occurs in the
>>>following
>>>innocent-looking function:
>>
>>Very strange. Did you have a look at the generated assembly with and without
>>-fbranch-prediction for that function?
>
>No, I haven't done that, but it sounds like a good idea.
>
>>Stack overflow should not happen that fast. If the bug really is in that function, one should
>>be able to see it from the assembly. Perhaps another bug is just triggered here.
>
>A bug somewhere else in my code, you mean?  That's what I fear, too (although I
>don't
>understand how a bug somewhere else could be triggered here).

When the FILE struct (here stdin) is already garbled, an fgets() may crash.

Cheers,
Heiner



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.