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[libcu++] Fix __detectably_invalid value returned during constant evaluation #8987

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Merged
davebayer merged 1 commit into from
May 14, 2026
Merged

[libcu++] Fix __detectably_invalid value returned during constant evaluation #8987

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11 changes: 7 additions & 4 deletions libcudacxx/include/cuda/__mdspan/host_device_accessor.h
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Original file line number Diff line number Diff line change
Expand Up @@ -196,7 +196,10 @@ class __host_accessor : public _Accessor
_CCCL_API constexpr reference access(data_handle_type __p, ::cuda::std::size_t __i) const
noexcept(__is_access_noexcept)
{
NV_IF_TARGET(NV_IS_DEVICE, (_CCCL_VERIFY(false, "cuda::__host_accessor cannot be used in DEVICE code");))
_CCCL_IF_NOT_CONSTEVAL_DEFAULT
{
NV_IF_TARGET(NV_IS_DEVICE, (_CCCL_VERIFY(false, "cuda::__host_accessor cannot be used in DEVICE code");))
}
return _Accessor::access(__p, __i);
}

Expand All @@ -217,7 +220,7 @@ class __host_accessor : public _Accessor
_CCCL_ASSERT(__is_valid, "host_accessor (mdspan): data handle doesn't point to a valid host memory");
return !__is_valid;
}
return true;
return false;
}
#endif // !defined(_CCCL_DISABLE_MDSPAN_ACCESSOR_DETECT_INVALIDITY)
};
Expand Down Expand Up @@ -352,7 +355,7 @@ class __device_accessor : public _Accessor
"device_accessor (mdspan): data handle doesn't point to a valid device or managed memory");
return !__is_valid;
}
return true;
return false;
}
#endif // !defined(_CCCL_DISABLE_MDSPAN_ACCESSOR_DETECT_INVALIDITY)
};
Expand Down Expand Up @@ -472,7 +475,7 @@ class __managed_accessor : public _Accessor
_CCCL_ASSERT(__is_valid, "managed_accessor (mdspan): data handle doesn't point to a valid managed memory");
return !__is_valid;
}
return true;
return false;
}
#endif // !defined(_CCCL_DISABLE_MDSPAN_ACCESSOR_DETECT_INVALIDITY)
};
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