Work around a diagnostic using CommandLine.arguments on older toolchains
#2622
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…hains. `CommandLine.arguments` is declared read/write in older toolchains and this causes an error diagnostic when it's used in Swift 6 mode. This PR uses `CommandLine.argc` and `CommandLine.unsafeArgv` directly instead so the diagnostic does not occur.
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…hains. (#2622) `CommandLine.arguments` is declared read/write in older toolchains and this causes an error diagnostic when it's used in Swift 6 mode. This PR uses `CommandLine.argc` and `CommandLine.unsafeArgv` directly instead so the diagnostic does not occur.
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CommandLine.argumentsis declared read/write in older toolchains and this causes an error diagnostic when it's used in Swift 6 mode. This PR usesCommandLine.argcandCommandLine.unsafeArgvdirectly instead so the diagnostic does not occur.