8000 RTTR_ENABLE fails ontemplate<size_t V> · Issue #382 · rttrorg/rttr · GitHub
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obfuscate opened this issue Apr 10, 2025 · 3 comments
Open

RTTR_ENABLE fails ontemplate<size_t V> #382

obfuscate opened this issue Apr 10, 2025 · 3 comments

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@obfuscate
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< 8000 p dir="auto">Hello there!

I've faced with a strange error during compilation this code:

class Test0
{
public:
	RTTR_ENABLE()
};

template<std::size_t _Order>
class Test1 : public Test0
{
public:
	RTTR_ENABLE(Test0)
};

And compiler says:

1>rttr\template_type_trait_impl.h(135,1): error C2672: 'rttr::type::get': no matching overloaded function found
1>(compiling source file 'test_cpp.cpp')
1>    \rttr\type.h(323,32):
1>    could be 'rttr::type rttr::type::get(T &&) noexcept'
1>        test_cpp.cpp(27,28):
1>        'rttr::type::get': invalid template argument for 'T', type expected
1>    rttr\type.h(310,32):
1>    or       'rttr::type rttr::type::get(void) noexcept'
1>        test_cpp.cpp(27,28):
1>        'rttr::type::get': invalid template argument for 'T', type expected
1>    rttr\detail\misc\template_type_trait_impl.h(135,1):
1>    the template instantiation context (the oldest one first) is
1>        asic_ecs_module.cpp(27,22):
1>        see reference to class template instantiation 'Test1<10000>' being compiled
1>        test_cpp.cpp(24,2):
1>        while compiling class template member function 'rttr::detail::derived_info Test1<10000>::get_derived_info(void)'
1>        test_cpp.cpp(24,2):
1>        see reference to function template instantiation 'rttr::type rttr::detail::get_type_from_instance<Test1<10000>>(const T *) noexcept' being compiled
1>        with
1>        [
1>            T=Test1<10000>
1>        ]
1>        rttr\detail\type\type_impl.h(325,20):
1>        see reference to function template instantiation 'rttr::type rttr::detail::create_or_get_type<Test1<10000>>(void) noexcept' being compiled
1>        rttr\detail\type\type_impl.h(304,77):
1>        see reference to function template instantiation 'std::unique_ptr<rttr::detail::type_data,std::default_delete<rttr::detail::type_data>> rttr::detail::make_type_data<Test1<10000>>(void)' being compiled
1>        rttr\detail\type\type_data.h(330,47):
1>        see reference to class template instantiation 'rttr::detail::template_type_trait<Test1<10000>>' being compiled
1>        rttr\detail\misc\template_type_trait_impl.h(135,1):
1>        while compiling class template member function 'std::vector<rttr::type,std::allocator<rttr::type>> rttr::detail::template_type_trait<Test1<10000>>::get_template_arguments(void)'
1>            rttr\detail\type\type_data.h(300,14):
1>            see the first reference to 'rttr::detail::template_type_trait<Test1<10000>>::get_template_arguments' in 'rttr::detail::make_type_data'
1>            rttr\detail\type\type_impl.h(304,77):
1>            see the first reference to 'rttr::detail::make_type_data' in 'rttr::detail::create_or_get_type'
1>            rttr\detail\type\type_impl.h(325,20):
1>            see the first reference to 'rttr::detail::create_or_get_type' in 'rttr::detail::get_type_from_instance'
1>            test_cpp.cpp(24,2):
1>            see the first reference to 'rttr::detail::get_type_from_instance' in 'Test1<10000>::get_derived_info'

but If I change the test1 like this:

template<typename T, T _Order>
class Test1 : public Test0
{
public:
	RTTR_ENABLE(Test0)
};

Everything compiles fine.

Do you have any idea what is wrong with the first code?
@acki-m
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acki-m commented Apr 10, 2025

I can say, it compiles with my version gcc 12 & c++17
But I updated some third party deps, but not on RTTR itself.
Which compiler do you use?

@obfuscate
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obfuscate commented Apr 10, 2025 •
edited
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msvc 1943 (toolset v143), c++20

@obfuscate
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Any updates/thoughts?
@acki-m may be you had a chance to look at it?)

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