[Bug c++/24058] New: g++ should warn about virtual methods called in constructors and destructors

["tron dot thomas at verizon dot net" <gcc-bugzilla at gcc dot gnu dot org>]

When all warnings are enabled the g++ compiler should warn when a virtual method is called in a 
constructor or destructor for the class containing the virtual method.

Steps:

1.  Compile the following using the command:  g++ -g -Wall -ansi -pedantic -c

#include <iostream>

class Base
{
public:
    Base() { Method(); }
    
    virtual ~Base() {}
protected:
    virtual void Method() { std::cout << "Base method.\n"; }
};

class Derived : public Base
{
public:
    Derived() { Method(); }
    
protected:
    void Method() { std::cout << "Derived method.\n"; }
};

Results:
The code compiles with no errors or warnings

Expected:
The call to Method in the Derived constructor will call Base::Method, and not Derived::Method because 
Derived is not constructed and available for use yet.  The compiler should warn about these kinds of 
virtual methods calls in constructors as the program may not yield the kind of results the developer is 
expecting.

-- 
           Summary: g++ should warn about virtual methods called in
                    constructors and destructors
           Product: gcc
           Version: 4.0.1
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tron dot thomas at verizon dot net
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24058