We are testing gcc-4.5.0 on MacOS (Leopard and Snow Leopard). We are seeing lots of abort traps and signals where we never saw them in gcc-4.4x. We also do not see them with gcc-4.5.0 on Linux (i386 and x86_64 flavors). What versions of gmp/mpfr/mpc are recommended for MacOS? We are currently testing: gmp='gmp-4.3.2' mpfr='mpfr-2.3.2' mpc='mpc-0.8.2' gcc='gcc-4.5.0' Any advice? Thanks. Tom -- Tom Evans Senior R&D Staff Radiation Transport Group, NST Division ------------------------------------------------ (865) 576-3535 Oak Ridge National Laboratory (865) 574-9619 fax PO Box 2008 MS6172 evanstm@xxxxxxxx Oak Ridge, TN 37831-6170 http://www.ornl.gov/sci/ees/nstd/group_rtg.shtml ------------------------------------------------