[PATCH] Use lowercase version of argv[0] when determining driver mode

[Reid Kleckner]

On Tue, Aug 20, 2013 at 2:04 PM, Hans Wennborg <hans at chromium.org> wrote:

> Hi whunt,
>
> This makes a difference on Windows, where e.g. clang-cl might actually be
> called as CLANG-CL.
>
> http://llvm-reviews.chandlerc.com/D1450
>
> Files:
>   tools/driver/driver.cpp
>
> Index: tools/driver/driver.cpp
> ===================================================================
> --- tools/driver/driver.cpp
> +++ tools/driver/driver.cpp
> @@ -226,6 +226,8 @@
>      { "++",        "--driver-mode=g++" },
>    };
>    std::string ProgName(llvm::sys::path::stem(ArgVector[0]));
> +  for (size_t i = 0, e = ProgName.length(); i != e; ++i)
> +    ProgName[i] = toLowercase(ProgName[i]);
>

This is modern C++, we can't use for loops, what are we, farmers!?
std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(),
::toLowerCase);

;)

Also, should we do this transform on non-Windows platforms?
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