To: djgpp AT sun DOT soe DOT clarkson DOT edu
From: "Nick van der Merwe"  <NEEK AT cerecam DOT uct DOT ac DOT za>
Date:         28 Jul 93 16:47:43 SAST-2
Subject:      Exception 14 error

I have an image processing program that is crashing at a specific
point with the error message :

" Segmentation violation in pointer 0x00000000
 at 40:465c
 Exception 14 (0xe) at eip=465c"

Previously I had 3 2D arrays define straight i.e image[512][512] etc
, and my program worked fine. The total data space needed was far
less than the 8M I have on board.

When I changed my 2D arrays to **image etc. and dynamically allocated
and freed the arrays as needed , my program crashed with the error
message. Note that the 2D arrays were working as I did convolutions
etc. on them before the crash. The program crashed right at the end
of a search through one of these 2D arrays.

Can anyone make any sense out of this?Why is it crashing with dynamic
allocation but not with straight allocation of 2D arrays?How can I
find out exactly what is causing the problem?

Thanks





----------------------------------------------------------------------
Nick van der Merwe
Department of Surveying and Geodetic Engineering
University of Cape Town | " I have a cunning plan...."
South Africa            |       - Baldrick (Black Adder)
Internet: neek AT cerecam DOT uct DOT ac DOT za or nickvdm AT eleceng DOT uct DOT ac DOT za