Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!helios!diamond!jdm5548
From: jdm5548@diamond.tamu.edu (James Darrell McCauley)
Newsgroups: comp.lang.c
Subject: SIMPLE malloc & pointer question
Message-ID: <7206@helios.TAMU.EDU>
Date: 7 Aug 90 02:08:58 GMT
Sender: usenet@helios.TAMU.EDU
Reply-To: jdm5548@diamond.tamu.edu (James Darrell McCauley)
Organization: Texas A&M University Agriculture Engineering Department
Lines: 37

I have the following code:
---cut here
#include<stdio.h>
#include<malloc.h>
main()
{
  int *a,*b;

  b=(int *)malloc( (unsigned) 4*sizeof(int));
  b[2]=5;
  printf("main(): b[2]=%d\n",b[2]);
  inita(a,b);
  printf("main(): a[2]=%d\n",a[2]);
}

inita (a,b)
int a[],b[];
{
  a=(int *)malloc( (unsigned) 4*sizeof(int));
  a[2]=3;
  printf("inita(): a[2]=%d\n",a[2]);
  printf("inita(): b[2]=%d\n",b[2]);
}
---cut here
which produces the following output:

main(): b[2]=5
inita(): a[2]=3
inita(): b[2]=5
Segmentation fault (core dumped)

Could some kind guru point out the error? Thank you very much.
--- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
James Darrell McCauley                 jdm5548@diamond.tamu.edu
Dept of Ag. Engineering                          (409) 845-6484
Texas A&M University, College Station, Texas 77843-2117, USA
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -