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From: rstanton@leland.Stanford.EDU (Richard Stanton)
Newsgroups: comp.unix.aix,comp.unix.programmer,comp.unix.questions
Subject: HELP! Why do I get error message: "Segmentation fault(coredump)" ?
Message-ID: <1991May23.090946.4000@leland.Stanford.EDU>
Date: 23 May 91 09:09:46 GMT
Article-I.D.: leland.1991May23.090946.4000
Sender: rstanton@leland.Stanford.EDU (Richard Stanton)
Organization: Stanford GSB
Lines: 22

The following may be simple, but I'm new to the AIX environment (and to 
programming in C under any UNIX).

I am trying to run a large C program on an IBM RS/6000. The program has
run fine on a VAX, but when I try to run it on the IBM, it starts OK, but
after a certain point I get the error message:

"Segmentation fault(coredump)"

This appears to happen at a section of code where memory is being allocated
using calloc, but I test for failure here, and my own error message is never
produced. What does this error message mean, and what do I have to do to
get the program to run properly?

Another program dies at a similar point, but this time it tells me it can't
allocate the memory I asked for using my own error message. How can I increase
the amount of memory available to the program?

Thanks for any help you can give me.

Richard Stanton
pstanton@gsb-lira.stanford.edu