mozilla/rust — pull request #13865 by alexcrichton (2014-04-30 18:39:01+00:00)
Title: native: Always open a file with Open/Write modes

Previously, windows was using the CREATE_NEW flag which fails if the file
previously existed, which differed from the unix semantics. This alters the
opening to use the OPEN_ALWAYS flag to mirror the unix semantics.

Closes #13861