$args = '' unless defined $args;
warn qq[Description "$desc" duplicates $seen{$desc}\n]
- if $seen{$desc} and $key ne "transr";
+ if $seen{$desc} and $key !~ "transr|(?:intro|clone)cv";
die qq[Opcode "$key" duplicates $seen{$key}\n] if $seen{$key};
die qq[Opcode "freed" is reserved for the slab allocator\n]
if $key eq 'freed';