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From: t5@pobox.com To: gcc-gnats@gcc.gnu.org Subject: c++/3383: covariant returns types not implemented Date: Fri, 22 Jun 2001 15:06:00 -0000 [thread overview] Message-ID: <20010622215615.25347.qmail@sourceware.cygnus.com> (raw) >Number: 3383 >Category: c++ >Synopsis: covariant returns types not implemented >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: rejects-legal >Submitter-Id: net >Arrival-Date: Fri Jun 22 15:06:00 PDT 2001 >Closed-Date: >Last-Modified: >Originator: David Jung >Release: 3.0 >Organization: >Environment: >Description: Trying to compile code that uses a co-variant return type gives the following message: sorry, not implemented: adjusting pointers for covariant returns and exits. (Although you may be aware of this, I could find a problem report about it anywhere in GNATS) >How-To-Repeat: Comple some code with a covariant return type. [e.g. see C++ FAQ 20.5 class Shape { public: virtual ~Shape() { } // A virtual destructor[20.4] virtual void draw() = 0; // A pure virtual function[22.4] virtual void move() = 0; // ... virtual Shape* clone() const = 0; // Uses the copy constructor virtual Shape* create() const = 0; // Uses the default constructor[10.4] }; class Circle : public Shape { public: Circle* clone() const { return new Circle(*this); } Circle* create() const { return new Circle(); } // ... } ] >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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