C:>perlver perlver_bug.pl


   ---------------------------------------------
 | file           | explicit | syntax | external |
 | --------------------------------------------- |
 | perlver_bug.pl | v5.6.0   | v5.6.0 | n/a      |
 | --------------------------------------------- |
 | Minimum explicit version : v5.6.0                        |
 | Minimum syntax version   : v5.6.0                        |
 | Minimum version of perl  : v5.6.0                        |
   ---------------------------------------------


C:>perlver --blame perlver_bug.pl

 ------------------------------------------------------------
 File    : perlver_bug.pl
 Line    : 2
 Char    : 1
 Rule    : _perl_5006_pragmas
 Version : 5.006
 ------------------------------------------------------------
 use warnings;
 ------------------------------------------------------------