bbl@dk.damgaard.com (Bjarne Blichfeldt) writes:
>On linux I get a SIGSEGV, Segmentation fault if I close a nonopen file.
>On unix platforms, this is either simply ignored or an appropiate
>errormessage is returned, and according to the linux manualpage fclose
>on linux should return EBADF.
>I have testet the following example on AIX 4.3, Solaris 7, FreeBSD 4.0,
>TRU64, HPUX 10.20, SCO ODT5, linux kernel 2.2.15 and linux kernel
>2.2.13.
>in case you wonder: the problem arises from a program that closes a
>file twice because it does not know that the file is allready closed.
>Regards,
>Bjarne
>/*--------------------------------------------*/
>#include <stdio.h>
>FILE *new;
>main () {
> fclose (new); /* <---- SIGSEGV on linux only */
>}
>/*--------------------------------------------*/
[...]
if(fd)
{
fclose(fd);
fd = NULL;
}
[...]
no problem with this. Make your own code more robust.
Regards
Henning
-- Dipl.-Inf. (Univ.) Henning P. Schmiedehausen -- Geschaeftsfuehrer INTERMETA - Gesellschaft fuer Mehrwertdienste mbH hps@intermeta.deAm Schwabachgrund 22 Fon.: 09131 / 50654-0 info@intermeta.de D-91054 Buckenhof Fax.: 09131 / 50654-20
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