Cast bug?

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1 total messages Started by Tom Keffer Tue, 01 Aug 1989 14:34

#314

Author: Tom Keffer
Date: Tue, 01 Aug 1989 14:34

30 lines
1144 bytes

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
 School of Oceanography     | BITNET:   keffer%sperm.ocean.washington.edu@UWAVM
 Univ. of Washington, WB-10 | uucp:     uw-beaver!sperm.ocean.washington.edu!keffer
 Seattle, WA 98195          | Telemail: T.KEFFER/OMNET
    (206) 543-6455

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