Re: c++/4337: [2003-01-01]c++ ignores cast operator

["Giovanni Bajo" <giovannibajo@libero.it>]

The following reply was made to PR c++/4337; it has been noted by GNATS.

From: "Giovanni Bajo" <giovannibajo@libero.it>
To: "Bogdanov, Serge" <serge.bogdanov@intel.com>,
	<gcc-bugs@gcc.gnu.org>,
	<gcc-prs@gcc.gnu.org>,
	<nobody@gcc.gnu.org>,
	<gcc-gnats@gcc.gnu.org>
Cc:  
Subject: Re: c++/4337: [2003-01-01]c++ ignores cast operator
Date: Wed, 14 May 2003 02:36:09 +0200

 Bogdanov, Serge <serge.bogdanov@intel.com> wrote:
 
 >       The latest analysis by Giovanni solves one mystery, but there is
 > another one in the same bug report: if the cast operator is removed,
 > compiler produces warnings.
 >
 >>>> g++ -o a a.cpp
 > a.cpp: In function `int main()':
 > a.cpp:27: warning: choosing `A2::operator A1()' over `A1::A1(const A&)'
 > a.cpp:27: warning:   for conversion from `A2' to `A1'
 > a.cpp:27: warning:   because conversion sequence for the argument is
 better
 
 And what would the problem be? If you remove the cast operator, you end up
 with "a2 = a1" which obviously selects the cast operator. The compiler is
 just warning you about the possible ambiguity, but it's choosing the right
 path.
 
 Giovanni Bajo