plan skip_all => 'B::C required for testing perlcc -O3'
unless eval "require B::C;";
-plan skip_all => "B::C is too old (require 1.48, have $B::C::VERSION)"
+plan skip_all => 'B::C is too old (require 1.48, have ' . ($B::C::VERSION || 'undef') . ')'
unless eval { B::C->VERSION('1.48') };
plan skip_all => 'Devel::CheckBin required for looking for a perlcc executable'