August 27, 2011
  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/dmd

  Commit: 33844b7a3a9b0725708fc973d75e167cf813f0f3
      https://github.com/D-Programming-Language/dmd/commit/33844b7a3a9b0725708fc973d75e167cf813f0f3
  Author: Walter Bright <walter at walterbright.com>
  Date:   2011-08-27 (Sat, 27 Aug 2011)

  Changed paths:
    M src/aliasthis.c
  A test/fail_compilation/fail6561.d

  Log Message:
  -----------
  Merge pull request #337 from 9rnsr/fix6561

Issue 6561 - alias this + undefined symbol should cause error