Path: utzoo!telly!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!SPERM.OCEAN.WASHINGTON.EDU!keffer
From: keffer@SPERM.OCEAN.WASHINGTON.EDU (Tom Keffer)
Newsgroups: gnu.g++.bug
Subject: Cast bug?
Message-ID: <8908011434.AA27017@sperm.ocean.washington.edu>
Date: 1 Aug 89 14:34:01 GMT
Sender: daemon@tut.cis.ohio-state.edu
Distribution: gnu
Organization: GNUs Not Usenet
Lines: 30

It was my impression that under C++, the cast notations A(B) and (A)B
are equivalent when casting a B as an A.  This is not always true
under g++ 1.35.0.  Here is a code strip that illustrates the
difference:

class A {
};

class B {
public:
  operator A();
};

void foo(A&);

main()
{
  B b;
  foo( A(b) );  // Error: type `A' does not have a constructor
  foo( (A)b );  // OK
}

-tk

---
 Dr. Thomas Keffer          | Internet: keffer@sperm.ocean.washington.edu
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