[libcxx-commits] [libcxx] [libcxxabi] [libunwind] [runtimes][NFC] Consistently declare main() functions in tests (PR #162548)

[Louis Dionne via libcxx-commits]

ldionne wrote:

> LGTM, only question is whether this should be `const char**`

I'm not sure it's legal. You can do `char argv[]` or `char** argv` or omit it entirely: https://eel.is/c++draft/basic.start.main#2. Clang doesn't emit a diagnostic so I'm not 100% certain.

Either way, we do `char**` in the test suite consistently.

https://github.com/llvm/llvm-project/pull/162548