chore: fix compiler warnings

[guan404ming]

Why

• Unused parameter num_args in GetMismatchMessageAux template function
• Extra semicolon after TVM_FFI_DLL_EXPORT_TYPED_FUNC macro call

How

• Add [[maybe_unused]] attribute to num_args param
• Remove trailing semicolon

[gemini-code-assist]

Summary of Changes

Hello @guan404ming, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on code hygiene by addressing minor compiler warnings. The changes involve marking an unused function parameter with [[maybe_unused]] and removing an extraneous semicolon after a macro call. These adjustments improve code quality and reduce compilation noise without altering functionality.

Highlights

• Unused Parameter Warning: The num_args parameter in the GetMismatchMessageAux template function within include/tvm/ffi/reflection/overload.h has been marked with the [[maybe_unused]] attribute to suppress compiler warnings about its non-usage.
• Extraneous Semicolon Warning: An unnecessary trailing semicolon after the TVM_FFI_DLL_EXPORT_TYPED_FUNC macro call in tests/cpp/test_function.cc has been removed, resolving a compiler warning.

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[gemini-code-assist]

Code Review

This pull request fixes two compiler warnings. The first is an unused parameter, which is addressed by adding the [[maybe_unused]] attribute. The second is an extra semicolon after a macro invocation, which is removed. Both changes are correct and effectively resolve the warnings. I have added one comment with a suggestion for a potential refactoring to further improve code clarity by removing the unused parameter altogether, instead of just marking it as unused.

[gemini-code-assist]

While [[maybe_unused]] correctly suppresses the compiler warning, a cleaner solution would be to remove the num_args parameter from GetMismatchMessageAux entirely, as it is not used. This would improve code clarity by removing the unneeded parameter and would require updating its call sites.

[junrushao]

LGTM. Thanks for the patch!

[junrushao]

BTW, there are quite a few TVM_FFI_DLL_EXPORT_TYPED_FUNCs in testing.cc, test_stl.cc, and many other places, do you intend to remove all of them? Does the warnings come from MSVC btw?

[guan404ming]

here are quite a few TVM_FFI_DLL_EXPORT_TYPED_FUNCs in testing.cc, test_stl.cc, and many other places

Sure, I've removed them. Thanks!

Does the warnings come from MSVC btw?

The warning is from GCC with -Wpedantic, not MSVC.

[junrushao]

LGTM. Thanks for the patch!