imcc reserved words?

[Sam Ruby]

How does one create a sub named "num"?  Or a local pmc named "num"?
Consider:
  .sub num @MAIN
    .local pmc num
    num = new PerlInt
    num = 5
    print num
  .end
Results:
  error:imcc:parse error, unexpected FLOATV, expecting IDENTIFIER or
  PARROT_OP in file 'test/for.pir' line 1
  error:imcc:parse error, unexpected FLOATV, expecting IDENTIFIER
  in file 'test/for.pir' line 2
- Sam Ruby