diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/date.rb | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/date.rb b/lib/date.rb index daa51d8e0e..3bb0875023 100644 --- a/lib/date.rb +++ b/lib/date.rb @@ -1,7 +1,7 @@ # # date.rb - date and time library # -# Author: Tadayoshi Funaba 1998-2009 +# Author: Tadayoshi Funaba 1998-2010 # # Documentation: William Webber <william@williamwebber.com> # @@ -1416,7 +1416,10 @@ class Date y, m = (year * 12 + (mon - 1) + n).divmod(12) m, = (m + 1) .divmod(1) d = mday - d -= 1 until jd2 = _valid_civil?(y, m, d, @sg) + until jd2 = _valid_civil?(y, m, d, @sg) + d -= 1 + raise ArgumentError, 'invalid date' unless d > 0 + end self + (jd2 - jd) end |