New failures related to recent developments

[Torbjorn Granlund]

nisse at lysator.liu.se (Niels Möller) writes:

  Will you commit these fixes, or do you want me to do that?
  
Please take care of any fixing.  It's your baby after all.  :-)

  I have found the same four direct MPZ_REALLOC problems when reviewing
  the code: mpz_abs_add, mpz_and, mpz_ior and mpz_xor. Then I have loooked
  for functions which use cached pointers over a call to a function using
  MPZ_REALLOC. But I didn't find any problems of that type.
  
These other usages all seem to be safe, I finished a review too, since
four eyes see more than two.

(I think the mini-gmp test suite should have caught these errors.  I'd
suggest that you enhance it, and make sure these types of errors are
actually detected.)

-- 
Torbjörn