Re: [Boost-users] boost multiprecision & STL map - resubmit

Subject: Re: [Boost-users] boost multiprecision & STL map - resubmit
From: Marshall Clow (mclow.lists_at_[hidden])
Date: 2014-01-21 10:43:49

On Jan 21, 2014, at 5:26 AM, John Maddock <john_at_[hidden]> wrote:

>> Ok. Better framed question.
>> 
>> The following is compiled on XCode
>> 5.0.1.
>> 
>> Clang :
>> 
>> Apple LLVM version 5.0 (clang-500.2.79) (based on
>> LLVM 3.3svn)
>> Target: x86_64-apple-darwin12.5.0
>> Thread model:
>> posix
>> 
>> Boost v 1.55.0. Build 2.0-m12.
>> 
>> Not sure how to fix it. map
>> complains about constructor ambiguity and I am not sure how to fix
>> it.
> 
> I'm not able to reproduce with either MSVC or g++, also looking at the source for libc++ I see the current source has only one overload of __construct_node, where as yours appears to have two: maybe this is an old libc++ bug?

The key to reproducing this is “-std=c++11”; in C++03 it works, and in C++11 it does not.

I believe that this is related to http://llvm.org/bugs/show_bug.cgi?id=16549 (which has been fixed)
In any case, your code works fine with the latest libc++ sources, but I’m guessing that’s not a helpful answer for you.

— Marshall