In GenPod.pm "our %basic_types" hash, there's two entries for "char" key,

	char     => 'integer',
	char     => 'string',

both under "# other C names which may sneak through".

I struck this experimenting with some automated detection of duplicate literal hash keys in perlcritic.  I suppose the last one is what results, with no ill effect, but it might be worth showing just one to avoid confusion for human readers.