January 16, 2012
  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: 47ad405f25ffefb9781ca9eed89de61025ca82ac
      https://github.com/D-Programming-Language/dmd/commit/47ad405f25ffefb9781ca9eed89de61025ca82ac
  Author: Walter Bright <walter at walterbright.com>
  Date:   2012-01-16 (Mon, 16 Jan 2012)

  Changed paths:
    M src/expression.c
  M src/mtype.c
  M src/optimize.c
  M src/template.c
  M test/runnable/template9.d
  M test/runnable/testconst.d

  Log Message:
  -----------
  Merge pull request #558 from 9rnsr/fix4251

Issue 4251 - Hole in the const system: immutable(T)[] implicitly casts to ref const(T)[]