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Q23856: Code that Will Hang IBM XTs or Compatibles

Article: Q23856
Version(s): 1.00
Operating System: MS-DOS
Flags: ENDUSER | TAR57675 buglist1.00
Last Modified: 8-NOV-1988

Problem:

The following code will hang IBM XTs or compatibles if specific
commands are issued when inside of CodeView:

   #include <stdio.h>
   main()
   {
        int n;
        double f;

        while(1)   {
                   scanf("%d",&n);
               f=1.0;
               while (n>1) f=f*n--;
                  printf("%.101g%c",f,'\n');
                   }
   }

For the program to fail in CodeView, first set a breakpoint at
instruction f=1.0. Issue the Go command, then the P command.

Response:

This is corrected in CodeView version 2.20.

A workaround is to place a breakpoint at the instruction before or
after the assignment to f.