On 2/12/2012 5:44 PM, robin wrote:
In this case, BCTR is inappropriate, because the length can be zero, and use of SH provides the means to test for negative and to skip the MVC (or CLC).
You're drawing an unwarranted conclusion. It is quite possible that the length was tested earlier on in the code, and the author knows better than you that the BCTR is safe. Gerhard Postpischil Bradford, VT
