Re: Rename variant and lex_symbols options

[Hans Aberg]

On 14 Feb 2012, at 10:11, Akim Demaille wrote:

>>>> %token <::std::string> TEXT;
>>>> %token <int> NUMBER;
>>>> 
>>>> list:
>>>> /* nothing */ { /* Generates an empty string list */ }
>>>> | list item     { std::swap ($$, $1); $$.push_back ($2); }
>>>> ;
>> 
>> C++11 allows unions having members of types with non-trivial 
>> constructors/destructors, which however, must be called explicitly.

> I don't plan to require C++11 for Bison generated parsers.

It will only be required when using %union and putting a type with non-trivial 
constructors/destructors into that union.

> That's way too early.

GCC 4.6 supports unrestricted unions.

Hans