satyaakam goswami wrote: > -Werror The option -Werror makes all warnings fatal not it being GCC 4.1. Without knowing what options you passed to the compiler it all guesswork. I short google search came up with possible cause of aliasing, note I use 3.4.5 so no direct knowedge of the issue. You might look for the options -Wstrict-aliasing Might wish to try the options below -fno-strict-aliasing Tim S