Hi Paulo, I don't have any experience with gcc-4, but thanks for the information about compiling versus runtime compilers! --Andy Andrew D. Hwang ahwang@mathcs.holycross.edu Department of Math and CS http://math.holycross.edu/~ahwang College of the Holy Cross (508) 793-2458 (Office: 320 Swords) Worcester, MA, 01610-2395 (508) 793-3530 (fax)