D-Programming-Language/phobos — pull request #1673 by dawgfoto (2013-10-30 18:48:43+00:00)
Title: fix Issue 6531 - assertion failure in std.range.iota

- The assertion fails because of excess precision.

- Can't use nextUp/nextDown in ctfe, but currently ctfe
always computes with maximum precision so it doesn't
run into this issue.