Hi, I came across a problem while using gcc3.4.6 on PPC440. It turns out with -O2 flag the compiler does inline function expanding. I tested with 3.2 version it doesn't do it in O2. The 3.4.6 manual says that only with -O3 the compiler can do this inline function optimization. Even I used -fno-inline-functions it doesn't work, but used -fno-inline does prevent inline functions. Is it a bug in 3.4.6? BTW, what's the difference between -fno-inline and -fno-inline-functions? Thanks Ming