[PATCH] fix for CGDebugInfo.cpp filename append

[Hans Wennborg]

On Thu, Oct 17, 2013 at 8:09 AM, Yaron Keren <yaron.keren at gmail.com> wrote:
> Hi,
>
> Filename appending in CGDebugInfo.cpp was implemented as simple string
> concatenation, resulting in duplicate file debug information on Windows due
> to wrong path separator.
>
> The patch uses  llvm::sys::path::append to properly append the filename on
> all OS.
>
> Is there a way to use path::append without the SmallString temporary?
>
> Yaron

The patch looks reasonable to me, but I wish there were a test we
could update for this.

Maybe the debug info folks know if there is a test that picks up the
-main-file-name?

 - Hans