[BUG]: MSVC < 2022 doesn't properly handle thrust's member function detector.

[alliepiper]

Is this a duplicate?

• I confirmed there appear to be no duplicate issues for this bug and that I agree to the Code of Conduct

Type of Bug

Compile-time Error

Component

Thrust

Describe the bug

See reproducer. This works on other platforms and on MSVC 2022, but 2017 and 2019 fire the static assert.

I tried messing with the implementation a little, but no luck finding an alternative that MSVC was happy with.

Some tests in thrust/testing/memory.cu and thrust/testing/allocator.cu will be disabled until this can be fixed. Search for this issue number to find them.

How to Reproduce

#include <thrust/detail/type_traits/has_member_function.h>

struct foo { void baz(); };

__THRUST_DEFINE_HAS_MEMBER_FUNCTION(has_baz, baz)

static_assert(has_baz<foo, void()>::value, "Cannot detect member.");

>  cl.exe  -DTHRUST_DEVICE_SYSTEM=THRUST_DEVICE_SYSTEM_CPP -IC:\cccl\thrust\ -IC:\cccl\cub\ -IC:\cccl\libcudacxx\include\ -c ..\..\test.cpp

..\..\test.cpp(16): error C2338: Cannot detect member.

Tasks

Beta Give feedback

1. Find a new implementation for the "has member function" utility that work.
2. Re-enable tests in memory.cu (search for this issue number, 1731)
3. Re-enable tests in allocator.cu (search for this issue number, 1731)