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From: wheelan@cs.mcgill.ca (Bill HEELAN)
Newsgroups: comp.sys.next
Subject: Bug in cc++
Keywords: bug, C++, cc++
Message-ID: <1991Apr23.020157.21859@cs.mcgill.ca>
Date: 23 Apr 91 02:01:57 GMT
Sender: news@cs.mcgill.ca (Netnews Administrator)
Organization: SOCS, McGill University, Montreal, Canada
Lines: 40
Originator: wheelan@quiche.cs.mcgill.ca


   The C++ compiler under 2.0 (cc++) dies with an internal error when given
   the following program.  It should give a more helpful warning instead. :-)

                                                        - Bill



Script started on Mon Apr 22 20:42:57 1991
% cc++ -c bug.c
Assertion failed: !integer_zerop (expr), file cplus-cvt.c, line 1124.
cc++: Internal compiler error.  Program cc1++ got fatal signal 6.
% 
% cat bug.c
class Foo {
    int x ; // just to get rid of a compiler warning

public:
    Foo( void ) {}
} ;


class Bar : public Foo {
public:
    Bar( void ) {}
} ;


void zarf( void )
{
    Foo *n ;

    if((n = new Bar()) == (Bar *)0) // ... == (Foo *)0) works.
    {
    }
}
% exit
% 

script done on Mon Apr 22 20:43:19 1991