Marks conditionally-used params in argument annotation framework [[maybe_unused]]

[elstehle]

Marks the conditionally-used parameters of __validate_static_element_bounds and __validate_runtime_element_bounds in the argument annotation framework as [[maybe_unused]]. Those parameters are only referenced inside _CCCL_ASSERT/if constexpr, so they are unused and trip a unused-parameter when the assertions compile out .

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• libcudacxx/include/cuda/__argument/argument.h

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• libcudacxx/include/cuda/__argument/argument.h

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Summary

This PR marks conditionally-used parameters in the argument annotation framework with the [[maybe_unused]] attribute to suppress unused-parameter compiler warnings.

Changes

File: libcudacxx/include/cuda/__argument/argument.h

• __validate_static_element_bounds: Added [[maybe_unused]] to the __val parameter
• __validate_runtime_element_bounds: Added [[maybe_unused]] to both the __val and __runtime_bounds parameters; function signature reformatted across multiple lines

Rationale

The parameters of both validation functions are referenced only inside _CCCL_ASSERT / if constexpr contexts. When assertions are compiled out, these parameters become unused and trigger compiler warnings. The [[maybe_unused]] attribute suppresses these warnings while preserving the function signatures and logic.

Walkthrough

suggestion: This PR adds [[maybe_unused]] annotations to parameters in two internal validation helper functions in the argument header. The __validate_static_element_bounds and __validate_runtime_element_bounds functions have their parameters marked to suppress unused-parameter warnings.

Changes

Validation helper parameter annotations

Layer / File(s)	Summary
Add [[maybe_unused]] annotations to validation helpers libcudacxx/include/cuda/__argument/argument.h	__validate_static_element_bounds marks __val as [[maybe_unused]]. __validate_runtime_element_bounds marks both __val and __runtime_bounds as [[maybe_unused]], with the signature reformatted across multiple lines.

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