[PATCH] D38984: Use O_BINARY when opening GCDA file on Windows

[Joerg Sonnenberger via llvm-commits]

On Tue, Oct 17, 2017 at 02:17:15PM +0000, Zachary Turner via llvm-commits wrote:
> Did you confirm this fixes it? Because i was just speculating :)

...and if it does, adding "b" to the mode would result in the same
behavior for fopen.

Joerg