How can I delegate %undef?

In the example below the assembler (called with "nasm.exe -t -f rdf q.asm") bemoans my code, displays

"q.asm:19: error: interminable macro recursion"

and hangs.

===q.asm===

bits 32
CPU P4


%macro my_def 2
  %xdefine %1 esp+%2
%endmacro

%macro my_undef 1
  %undef %1
%endmacro

global checkit
checkit:
  mydef x,4
  mov eax,[x]
  myundef x

mydef x,8
  add eax,[x]
  myundef x
  ret

What is the preferred way to do this?

Thanks,

Jasper

... and hangs. ...

It'll not hang anymore. Fixed. Meanwhile such a style not supported yet.

See comments on commit http://repo.or.cz/w/nasm.git/commit/bd38c8f231d938ffdf0916809bf2a6b65e62ea61

Thanks for report. If you find something strange like "hang", "crash" or whatever -- do not hesitate to file a bug report on tracker :)