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Re: error: no matching constructor for initialization of 'string_vector'


From: Ben Abbott
Subject: Re: error: no matching constructor for initialization of 'string_vector'
Date: Fri, 26 Aug 2016 08:33:27 -0400

> On Aug 26, 2016, at 7:32 AM, Ben Abbott <address@hidden> wrote:
> 
>> On Aug 25, 2016, at 9:40 PM, Mike Miller <address@hidden> wrote:
>> 
>> On Thu, Aug 25, 2016 at 20:43:19 -0400, Ben Abbott wrote:
>>> On Aug 25, 2016, at 9:01 AM, Carnë Draug <address@hidden> wrote:
>>>> 
>>>> In the change that's causing issues for clang, the argument is a
>>>> std::set<std::string> so I would expect it to use the templated
>>>> constructor for String_Container<std::string>.
>>> 
>>> If I’m following … might clang require an explicit constructor for 
>>> std::set<std::string>?
>> 
>> I can reproduce this build error on Debian with clang 3.7 / libc++ 3.7.
>> 
>> The specific constructor that should work but doesn't fails with the
>> following error:
>> 
>> ../liboctave/util/str-vec.h:131:16: note: candidate template ignored: 
>> substitution failure [with String_Container = set]: too few template 
>> arguments for class template 'set'
>> string_vector::string_vector (const String_Container<std::string>& lst)
>>                ^                    ~~~~~~~~~~~~~~~~
>> 
>> This appears to be the following issue filed with the C++ working group:
>> 
>> http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#2057
>> 
>> And the attached patch resolves the default template argument resolution
>> problem and the build finishes successfully for me. Feel free to refine
>> however you like.
>> 
>> -- 
>> mike
>> <str-vec-clang.diff>
> 
> The patch works for me as well.
> 
> Ben

Savannah is down (at least for me in FL). I’m attaching a cset attributed ti 
Mike. The change log might need some editing.

Ben

Attachment: changeset.patch
Description: Binary data


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