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Re: Double constructors in C++?

From: Mark Mitchell <mark at codesourcery dot com>
To: Ian Lance Taylor <iant at google dot com>
Cc: Samuel Tardieu <sam at rfc1149 dot net>, gcc at gcc dot gnu dot org
Date: Mon, 18 Feb 2008 18:53:27 -0800
Subject: Re: Double constructors in C++?
References: <2008-02-18-23-56-19+trackit+sam@rfc1149.net> <m33arpu0km.fsf@localhost.localdomain>

Ian Lance Taylor wrote:

Samuel Tardieu <sam@rfc1149.net> writes:

Why are constructors included twice in object code?
This is required by the C++ ABI.
It is, in my opinion, a real bug that gcc does not simply merge
identical constructors.

I agree.

Up until now, I think all of the patches have introduced additional thunks of some kind. Actually giving both names to the same entry point would avoid the ABI problems, and thus be non-controversial. (The ABI explicitly endorses multiple entry points as a solution.)

--
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713

Follow-Ups:
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References:
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  - From: Samuel Tardieu
- Re: Double constructors in C++?
  - From: Ian Lance Taylor

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