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Full Discussion: strcmp core dumps
Top Forums Programming strcmp core dumps Post 99830 by annie on Tuesday 21st of February 2006 09:11:33 PM
Old 02-21-2006
Quote:
Originally Posted by hegemaro
Though not pretty (and not fully correct)

Code:
strcmp ( ( s1 ? s1 : "" ), ( s2 ? s2 : "" ) );

Something like this would be a bit more graceful:

Code:
    int             Differ;


    if ( s1 == NULL || s2 == NULL )
    {
        if ( s1 == s2 )
        {
            Differ = 0;
        }
        else
        {
            Differ = 1;
        }
    }
    else
    {
        Differ = strcmp (s1, s2);
    }

    if ( Differ ) ...


thanks, was hoping there would be a more "correct" way to do this.
I really thought this would be a more common problem with a lib function I could use in this case. But thanks much for your solution, if all else fails, I may have to use that.
 

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LEARN ABOUT FREEBSD

crashinfo

CRASHINFO(8)						    BSD System Manager's Manual 					      CRASHINFO(8)

NAME

     crashinfo -- analyze a core dump of the operating system

SYNOPSIS

     crashinfo [-d crashdir] [-n dumpnr] [-k kernel] [core]

DESCRIPTION

     The crashinfo utility analyzes a core dump saved by savecore(8).  It generates a text file containing the analysis in the same directory as
     the core dump.  For a given core dump file named vmcore.XX the generated text file will be named core.txt.XX.

     By default, crashinfo analyzes the most recent core dump in the core dump directory.  A specific core dump may be specified via either the
     core or dumpnr arguments.	Once crashinfo has located a core dump, it analyzes the core dump to determine the exact version of the kernel
     that generated the core.  It then looks for a matching kernel file under each of the subdirectories in /boot.  The location of the kernel
     file can also be explicitly provided via the kernel argument.

     Once crashinfo has located a core dump and kernel, it uses several utilities to analyze the core including dmesg(8), fstat(1), iostat(8),
     ipcs(1), kgdb(1), netstat(1), nfsstat(1), ps(1), pstat(8), and vmstat(8).

     The options are as follows:

     -d crashdir
	     Specify an alternate core dump directory.	The default crash dump directory is /var/crash.

     -n dumpnr
	     Use the core dump saved in vmcore.dumpnr instead of the latest core in the core dump directory.

     -k kernel
	     Specify an explicit kernel file.

SEE ALSO

     textdump(4), savecore(8)

HISTORY

     The crashinfo utility appeared in FreeBSD 6.4.

BSD
								   June 28, 2008							       BSD
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