Re: Horrible compiletimes and memory usage while compiling a parser with X3

On 11/12/2016 10:45 AM, Larry Evans wrote:
> On 11/12/2016 07:15 AM, Larry Evans wrote:
>> On 11/10/2016 09:05 PM, Larry Evans wrote:
>>> On 11/10/2016 06:11 PM, Larry Evans wrote:
>>>> On 11/09/2016 05:55 PM, Joel de Guzman wrote:
>>> [snip]
>>>
>>>>> I'll look into this next. I believe there's a smart solution to this
>>>>> linking issue. It's a matter of syncing what you declare with what
>>>>> you actually use.
>>>>>
>>>>> Regards,
>>>>>
>>>> Thanks Joel.
>>>>
>>> [snip]
>>> The latest commit:
>>>
>>> https://github.com/cppljevans/boost_1_61_problem/commit/8386602c2653600335d536cdd489b60d5a1433a8
>>>
>>> pointed out an oddity in the link error message.
>>> The undefined reference was for parse_rule for
>>> the count rule but the start attribute.
>>>
>> Well, maybe not so odd.
>> Going through a gdb trace helps me see what's happening.
>> Sorry for noise.
>
> My gdb trace shows:
>
> (gdb) up
> #2  0x0000000000401e2c in
> boost::spirit::x3::detail::parse_sequence<boost::spirit::x3::sequence<boost::spirit::x3::omit_directive<boost::spirit::x3::any_char<boost::spirit::char_encoding::standard>
>  >, boost::spirit::x3::rule<count_class, ast::Count, false> >,
> __gnu_cxx::__normal_iterator<char const*,
> std::__cxx11::basic_string<char, std::char_traits<char>,
> std::allocator<char> > >, boost::spirit::x3::unused_type, ast::Start,
> ast::Start> (parser=..., first=..., last=..., context=..., rcontext=...,
> attr=...) at
> /home/evansl/prog_dev/boost/releases/ro/boost_1_61_0/boost/spirit/home/x3/operator/detail/sequence.hpp:312
> 312	            && parser.right.parse(first, last, context, rcontext,
> r_attr))
> (gdb) ptype r_attr
> type = struct ast::Start {
>      ast::Count count;
> } &
> (gdb)
>
> shouldn't the r_attr be that for rule<count_class,ast::Count>, or
> ast::Count?
>
When compiled with _DKEEP_CHAR, at same place, this occurs:

(gdb) run
Starting program: 
/tmp/build/gcc5_2_0/clang/dwnlds_work/dwnlds/Gerell.Boost_1_61_Spirit.LinkError.clone/cppljevans.boost_1_61_problem/prog.exe 


Breakpoint 2, 
boost::spirit::x3::detail::parse_sequence<boost::spirit::x3::sequence<boost::spirit::x3::any_char<boost::spirit::char_encoding::standard>, 
boost::spirit::x3::rule<count_class, ast::Count, false> >, 
__gnu_cxx::__normal_iterator<char const*, 
std::__cxx11::basic_string<char, std::char_traits<char>, 
std::allocator<char> > >, boost::spirit::x3::unused_type, ast::Start, 
ast::Start> (parser=..., first=..., last=..., context=..., rcontext=..., 
attr=...) at 
/home/evansl/prog_dev/boost/releases/ro/boost_1_61_0/boost/spirit/home/x3/operator/detail/sequence.hpp:305
305	        typename partition::l_part l_part = partition::left(attr);
(gdb) n
306	        typename partition::r_part r_part = partition::right(attr);
(gdb) n
307	        typename l_pass::type l_attr = l_pass::call(l_part);
(gdb) n
308	        typename r_pass::type r_attr = r_pass::call(r_part);
(gdb) n
310	        Iterator save = first;
(gdb) ptype r_attr
type = struct ast::Count {
     int value;
} &
(gdb)

Which is what I would expect.




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