Newsgroups: comp.lang.c++
Path: utzoo!utgpu!watserv1!coop3
From: coop3@watserv1.waterloo.edu (Scotte Zinn)
Subject: TC1.01 Bug: temporaries not destructed???
Message-ID: <1991Feb4.202248.9670@watserv1.waterloo.edu>
Organization: University of Waterloo
Date: Mon, 4 Feb 91 20:22:48 GMT
Lines: 61


I have the following program which, when run using TC1.01 command line
compiler, calls the constructor 4 times but only calls two destructors.
When compiled with G++ on UNIX, it only calls 3 constructors and 3 
destructors.  Is this a known bug with TC1.01???

Here is my sample program:

---Cut here---
#include <stdio.h>
 
 
class FooBar {
  public:
    FooBar();
    FooBar(FooBar &x);
    ~FooBar();
};
 
FooBar::FooBar()
{
  printf("ctor: FooBar()\n");
}
 
FooBar::FooBar(FooBar &x)
{
  printf("ctor: FooBar(FooBar &)\n");
}
 
FooBar::~FooBar()
{
  printf("dtor: FooBar()\n");
}
 
FooBar create1()
{
  return FooBar();
}
 
FooBar create2()
{
  return create1();
}
 
 
void main()
{
  FooBar  x = create2();
}
---Cut Here---


I can get around this by putting temporary variables in create1() and
create2().  I have also tried the TC++ version with an operator=() but
the same output occured.

Any comments would be appreciated.

-- Scotte Zinn
coop3@watserv1.uwaterloo.ca