`error: "cuda::std::cuda" is ambiguous` when including <cuda/std>

Question

`error: "cuda::std::cuda" is ambiguous` when including <cuda/std>

fjrdev opened this issue 2 years ago · 6 comments

Im using the libcu++ library for a cuda project. Including the complex-header via #include <cuda/std/complex> throws > 100 errors:

/usr/local/include/cuda/std/detail/libcxx/include/__utility/declval.h(33): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(348): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(348): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(348): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(348): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(348): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(348): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(348): error: pack expansion does not make use of any argument pack
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(356): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(356): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(356): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(356): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(356): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(356): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(356): error: pack expansion does not make use of any argument packs
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(357): error: function template "cuda::std::__4::__invoke(_Fp &&, _A0 &&, _Args &&...)" has already been defined
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(364): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(364): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(364): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(364): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(364): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(364): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(364): error: pack expansion does not make use of any argument packs
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(365): error: function template "cuda::std::__4::__invoke(_Fp &&, _A0 &&, _Args &&...)" has already been defined
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(374): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(374): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(374): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(374): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(382): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(382): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(382): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(382): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(383): error: function template "cuda::std::__4::__invoke(_Fp &&, _A0 &&)" has already been defined
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(390): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(390): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(390): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(390): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(391): error: function template "cuda::std::__4::__invoke(_Fp &&, _A0 &&)" has already been defined
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(399): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(399): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(399): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(399): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(399): error: pack expansion does not make use of any argument packs
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(410): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(410): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(410): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(410): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(410): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(410): error: pack expansion does not make use of any argument packs
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(444): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(444): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(444): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(444): error: pack expansion does not make use of any argument packs
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(451): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(451): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(451): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(451): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(451): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__functional/invoke.h(451): error: pack expansion does not make use of any argument packs
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_allocator.h(34): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_allocator.h(34): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_allocator.h(34): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_assignable.h(44): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_assignable.h(44): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_assignable.h(44): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_assignable.h(44): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_assignable.h(53): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_assignable.h(53): error: type name is not allowed
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_destructible.h(56): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_destructible.h(56): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_destructible.h(56): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_constructible.h(86): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_constructible.h(86): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_constructible.h(91): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_constructible.h(91): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_constructible.h(103): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_constructible.h(103): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_constructible.h(103): error: pack expansion does not make use of any argument packs
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_constructible.h(110): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_constructible.h(110): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_convertible.h(52): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_convertible.h(52): error: "cuda::std::cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_convertible.h(52): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_assignable.h(50): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_assignable.h(50): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_assignable.h(50): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_assignable.h(50): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_constructible.h(48): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_constructible.h(48): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_constructible.h(48): error: pack expansion does not make use of any argument packs
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_constructible.h(57): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_constructible.h(57): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_destructible.h(51): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_nothrow_destructible.h(51): error: expected an expression
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_valid_expansion.h(31): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_valid_expansion.h(31): error: type name is not allowed
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_valid_expansion.h(31): error: expected a ")"
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_valid_expansion.h(31): error: parameter pack "_Args" was referenced but not expanded
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_swappable.h(68): error: "cuda" is ambiguous
/usr/local/include/cuda/std/detail/libcxx/include/__type_traits/is_swappable.h(68): error: expected an expression

Error limit reached.

I have cloned libcu++ into my project and build it without errors. Im not quite sure what causes these types of errors and I could not find anything comparable online.

Answer 1 · 2023-01-12T17:01:59.000Z

Hm, this sounds like some namespace shenanigans.

Are you doing anything like using namespace cuda or opening namespace cuda{ yourself somewhere?

Answer 2 · 2023-01-12T21:53:26.000Z

@jrhemstad No, im not opening or using a cuda namespace in this project

Answer 3 · 2023-01-14T12:52:03.000Z

I tried to replicate the error in a less complex project. These errors just appear when #include <cuda/std/complex> or #include <cuda/std/ccomplex>. Everything else seems to work fine.

Answer 4 · 2023-01-14T14:45:00.000Z

Is there a link to the project or a minimal reproducer you could share?

Answer 5 · 2023-01-14T16:38:54.000Z

I could identify the source of the error. A file I was including used the cv namespace somewhere...
Thanks @jrhemstad and @miscco for the help and for your time!

Answer 6 · 2023-01-17T21:06:10.000Z

I'm glad you got it figured out! Don't hesitate to reach out again in the future with any issues or questions you have.