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- Xref: sparky comp.lang.c:18733 comp.unix.bsd:10491
- Path: sparky!uunet!spool.mu.edu!yale.edu!ira.uka.de!Germany.EU.net!rrz.uni-koeln.de!unidui!du9ds3!veit
- From: veit@du9ds3.fb9dv.uni-duisburg.de (Holger Veit)
- Newsgroups: comp.lang.c,comp.unix.bsd
- Subject: Re: Segmentation faults
- Date: 21 Dec 92 08:11:12 GMT
- Organization: Uni-Duisburg FB9 Datenverarbeitung
- Lines: 36
- Message-ID: <veit.724925472@du9ds3>
- References: <1gricmINNsl@ub.d.umn.edu> <1992Dec18.134225.20548@Logix.DE>
- Reply-To: veit@du9ds3.fb9dv.uni-duisburg.de
- NNTP-Posting-Host: du9ds3.fb9dv.uni-duisburg.de
-
- In <1992Dec18.134225.20548@Logix.DE> jpm@Logix.DE (Jan-Piet Mens) writes:
-
- >In <1gricmINNsl@ub.d.umn.edu> cbusch@ub.d.umn.edu (Chris) writes:
- >> Why is the following code producing a segmentation fault???
- >>I am compiling this code on an Encore Multimax running UMAX 4.3 Unix.
-
- >Doesn't matter where you compile it is bad anyway...
-
- >void writexy(x,y,s)
- >int x, y;
- >char *s; /* OTHERWISE DEFAULTS TO int !!! */
- >{
- > printf("\33[%d;%dH%s",y,x,s);
- >}
-
- >[ BTW, how about termcap/terminfo ? ]
- >--
- > __ _____ __ __
- > | || _ \ | \/ | Logix GmbH jpm@Logix.DE
- > __| || ___/ | | Moritzstrasse 50, +49-611-309797 jpm@logixwi.UUCP
- >|_____||__| |__||__| D-6200 Wiesbaden ...!uunet!mcsun!unido!logixwi!jpm
-
- This is a real problem where sizeof(int) != sizeof(char*), for instance with
- Turbo C or Microsoft C or similar 16bit junk. But if you compile this
- with a 32bit K&R compiler, and sizeof(int)==sizeof(char*) (=4), it won't see
- a difference, because it will just take 32bit from the parameter stack
- and push it as a 32bit argument to printf.
- The compiler cannot find out the real expected type (it cannot do parsing
- of the format string in general!).
-
- Holger
- --
- | | / Dr. Holger Veit | INTERNET: veit@du9ds3.fb9dv.uni-duisburg.de
- |__| / University of Duisburg |
- | | / Dept. of Electr. Eng. | "Understand me correctly:
- | |/ Inst. f. Dataprocessing | I'm NOT the WIZARD OF OS" (Holger)
-