tmpnam () is _bad_

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2 total messages Started by Ralf E. Stranzenbach Sat, 01 Aug 1992 19:58

#404

Author: Ralf E. Stranzenbach
Date: Sat, 01 Aug 1992 19:58

38 lines
1522 bytes

Hi,

i'm using NeXTstep 2.1. Today i noted, that the function "tmpnam ()" is not  
working correctly. See this example:

	#include <stdio.h>
	main () {
	  char   file1 [1024];
	  char   file2 [1024];
	  char   file3 [1024];
	  FILE * fp;
	  if ( (fp = fopen (tmpnam (file1), "w")) != NULL ) {
	    fclose (fp);
	  }
	  if ( (fp = fopen (tmpnam (file2), "w")) != NULL ) {
	    fclose (fp);
	  }
	  if ( (fp = fopen (tmpnam (file3), "w")) != NULL ) {
	    fclose (fp);
	  }
	  printf ("-%s-%s-%s-\n", file1, file2, file3);
	  unlink (file1);	
	  unlink (file2);
	  unlink (file3);
	  exit (0);
	}

In this example "tmpnam ()" returns three times the same filename.

	- ralf

--
Ralf E.Stranzenbach  -   (NeXT)-Mail: ralf@reswi.en.open.de
                                Fido: Ralf_Stranzenbach 2:245/5800.12
                       (Voice)-Phone: +49 2302 / 68403
--
Wenn ein Programm bei Dir fehlerfrei laeuft, mach Dir keine Sorgen.
Es wird vorbeigehen.

Re: tmpnam () is _bad_

#422

Author: Thomas Funke
Date: Mon, 03 Aug 1992 09:33

24 lines
1321 bytes

In article <1992Aug1.195837.2455@reswi.en.open.de> ralf@reswi.en.open.de  
(Ralf E. Stranzenbach) writes:
> Hi,
> 
> i'm using NeXTstep 2.1. Today i noted, that the function "tmpnam ()" is  
not  
> working correctly. See this example:
> 

There are several routines from the runtime-lib which just don't work.  
tmpnam is one of them. Actually it is a 5-line routine, so I really don't  
understand why there is such a bug at all .....

I sent a bug report to NeXT already, and they said they have fixed it in  
3.0. 

Users of CVS beware: You have to hack the sources to make 'cvs patch'  
working !!!

-- 
------------------------------------------------------------------
Thomas Funke  ** E-mail: thf@zelator.in-berlin.de
NeXT-Developer * Unix-Consultant
------------------------------------------------------------------

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