Date:         Wed, 30 Dec 92 08:13:38 MET
From: MAHB AT IBM DOT RZ DOT TU-CLAUSTHAL DOT DE
Subject:      Bug in stream I/O?
To: djgpp AT sun DOT soe DOT clarkson DOT edu

On my machine (ALR 486, 12MB) the following program performs
18 loops and then hangs the computer. To be more precise: after the
18-th loop, the system begins to grab virtual memory.  Running it with
debug32, I had to reboot when more than 15MB virtual memory were used.
If you comment out the
   cin >> ch;
line, the program runs fine.
The problem is the same with djgpp 1.09 and 1.08.
Is this a problem with I/O stream interaction?

Henning


//-------------------------------------------------------------------------
//
//  compile: gcc -v -g error.cc
//
//  error.cc
//
#include <iostream.h>

const int q = 3;

void Next(int nr, double *sv){
  int    i;
  char   ch;
  cout << "Input: ";
  cin  >> ch;
  cout << nr << "\n";
  for (i = 0; i <= q; i++)
    cout << "a" << i << ": " << sv[i] << "\n" ;
}

int main(){
  int       i, nr, n = 130;
  double    sv[q+1];

  for (i=0; i<=q; i++)
     sv[i] = 0.0;
  for(nr=0; nr<=n; nr++)
    Next(nr, sv);
}