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From: biorn@FKRS1.PHC.CHALMERS.SE (Bjorn Sandell)
Newsgroups: comp.unix.aix
Subject: sprintf (again)
Message-ID: <9106120920.AA08552@fkrs1.phc.chalmers.se>
Date: 12 Jun 91 09:20:08 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 32

Let's se if I can be more specific :)

First a "disclaimer": I don't know much AIX and even less C.

This is a 320 machine and uname -a says AIX fkrs1 1 3 000023913100.

I'm trying to port xmail. It usally coredumps, but once I got an error
message saying something like "can't open file /tmp/tmpxxxx_" where
xxxx was a number.
After some browsing through the sorce files I (think I) found the line
where this filename should be created. It was a sprintf statement, and I've
tried to replace it with strcpy and strcat as follows:

/* if ((fp = fopen((char *)sprintf(s, "%s_", tmpName), "w")) != NULL) {*/
   strcpy(s,tmpName);
      strcat(s,"_");
       if ((fp = fopen(s, "w")) != NULL) {

Now it seems to find the /tmp/tmpxxxx_ file (no errors at least;),
but it eventually coredumps anyway.
The question is do I have to rewrite all sprintf's this way or is there an
easier way? Is there anything wrong at all with the original line?
Any and all help is welcome!

Bjorn


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