libstdc++/9590: ifstream (inherited?) destructor overwrites memory causing segfault

[k dot schaefer at icarnegie dot com]

>Number:         9590
>Category:       libstdc++
>Synopsis:       ifstream (inherited?) destructor overwrites memory causing segfault
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Feb 05 21:56:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     k.schaefer@icarnegie.com
>Release:        unknown-1.0
>Organization:
>Environment:
Windows 2000 SP3 with Cygwin 1.3.19-1, running g++ (G++) 3.2 20020927 (prerelease)
>Description:
In the following example, uncommenting the char array illustrates that something in the destruction of the ifstream object overwrites memory.  Leaving it commented causes a segmenation fault.  The char array in the example code is the minimum buffer that will allow the program to execute without faulting.

//--- begin code
#include <fstream>

using namespace std;

//takes one param - a filename
int main(int argc, char *argv[]) {
  //when uncommented allows program not to segfault.
  //char a[17];
  ifstream infile(argv[1]);

  infile.close();

  return 0;
}

// -- end code
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: