Re: [Qemu-devel] [PATCH 1/8] qapi: fix NULL pointer dereference

[Gerd Hoffmann]

  Hi,

>> What are the uses of null in qdev string properties?  I know you can't
>> set a string to null since parse() doesn't have a null syntax.  So we're
>> really just talking about an uninitialized state, right?
> 
> Yes.  No ROM BAR is an example of a NULL string property.

Both NULL and zero-length string are valid for "empty" though, so you
can use -device e1000,romfile=,mac=whatever to boot without pxe rom.

Which underlines anthonys point ;)

cheers,
  Gerd