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Date: Wed, 2 Dec 2009 07:46:20 +0000
Message-ID: <416096c60912012346j43db4597j2590fa3d9e93ffb7@mail.gmail.com>
Subject: Re: odd segfault with my c program using cygwin 1.7
From: Andy Koppe <andy.koppe@gmail.com>
To: cygwin@cygwin.com
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2009/12/2 Dave Korn:
> Andy Koppe wrote:
>> 2009/12/2 jeffunit:
>>> My program ran fine under cygwin 1.5 as well as many versions of linux
>>> including
>>> mandriva 2009, mandriva 2009.1 and mandriva 2010.0
>>>
>>> When compiled with
>>> gcc cal.c -o cal
>>> and run with
>>> cal 2009
>>> I get a segmentation fault.
>>> When I uncomment line 62, the program runs successfully.
>>
>> It's the line after that that has the bug: it's writing to index 432
>> of a 432-element array.
>
> =C2=A0Doesn't look like it does to me:
>
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 for(j=3D0; j<6*72; j++) {
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 //printf("joe %d\n", j);
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 string[j] =3D '\0';
>> =C2=A0 =C2=A0 =C2=A0 }
>
> =C2=A0That's less than 432, not less than or equal.

You're right, somehow I'd completely misread that, thinking that the
string[j]=3D'\0' is outside the loop.

Sorry,
Andy

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