Hi, I'm currently facing an issue with -Os and -O2 optimization level. My program can be compiled with both case, but it's not stable for -Os flag. It makes my application crash sometimes. I wonder what is the different between -Os and -O2 and where can I find more information relating to this. I have looked at http://gcc.gnu.org/onlinedocs/gcc/Optimize Options.html and understand it well but I need deeper information such as how -Os works and is there any issue recently. Some information about my program - It is a shared library - It is written in C - The platform is MIPS32 - Toolchain is MIPS and get from buildroot - GCC version is 3.4.6 Please help me out. Regards, -Hieu
