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Cream of the Crop 1
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Cream of the Crop 1.iso
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PROGRAM
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CBGRX100.ARJ
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CRSHTEST.C
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1992-04-10
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/**
** CRSHTEST.C
**
** Copyright (C) 1992, Csaba Biegl
** 820 Stirrup Dr, Nashville, TN, 37221
** csaba@vuse.vanderbilt.edu
**
** This file is distributed under the terms listed in the document
** "copying.cb", available from the author at the address above.
** A copy of "copying.cb" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.cb".
** You should also have received a copy of the GNU General Public
** License along with this program (it is in the file "copying");
** if not, write to the Free Software Foundation, Inc., 675 Mass Ave,
** Cambridge, MA 02139, USA.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
void main(int argc,char **argv)
{
char *ptr;
int test;
printf("Segmentation violation test for DJGPP\n");
fflush(stdout);
if((argc > 1) && (strcmp(argv[1],"-h") == 0)) {
ptr = (char *)(((int)sbrk(0) + 100000) & ~ 4095) - 1;
brk(ptr);
printf("end or RAM = 0x%08x\n",ptr);
printf("accessing *(ptr - 1) ...\n");
fflush(stdout);
test = *(ptr - 1);
printf("OK!\n");
printf("accessing *ptr ...\n");
fflush(stdout);
test = *ptr;
printf("OK!\n");
printf("accessing *(ptr + 1) ...\n");
fflush(stdout);
test = *(ptr + 1);
printf("OK!!!!!! (what ?)\n");
for( ; ; ) test = *ptr++;
}
else {
ptr = (char *)0xd0000000;
printf("start of VIDEO RAM = 0x%08x\n",ptr);
printf("accessing *ptr ...\n");
fflush(stdout);
test = *ptr;
printf("OK!\n");
printf("accessing *(ptr - 1) ...\n");
fflush(stdout);
test = *(ptr - 1);
printf("OK!!!!!! (what ?)\n");
}
}