dave mitchell uaufmiabyncom wed nov 07 2007 072741pm 0500 jerry hedden wrote segv dont know unitialised warning isnt second arg isa undef dont think following doesnt produce warnings seg fault perl e x universalisax undef however following perl x universalisax undef produces use uninitialized value subroutine entry e line 1 dont follow ignoring moment segfault already admitted bug two examples seem show enable warnings b pass uninitialised value err get uninitialised value warning whats buggy strange women lying ponds distributing swords basis system government supreme executive power derives mandate masses farcical aquatic ceremony dennis monty python holy grail thu 07 aug 2008 182538 0000 perl 47233 core dump caused goto