[ruby-cvs:69748] nobu:r62572 (trunk): date_core.c: defensive code

[nobu at ruby-lang.org]

nobu	2018-02-25 13:28:11 +0900 (Sun, 25 Feb 2018)

  New Revision: 62572

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=62572

  Log:
    date_core.c: defensive code
    
    * ext/date/date_core.c (f_cmp): check comparison failure.
    
    * ext/date/date_core.c (d_lite_step): deal with the comparison
      result more defensively.  [ruby-core:85796] [Bug #14549]

  Modified files:
    trunk/ext/date/date_core.c
    trunk/test/date/test_date_arith.rb