Why GCC 4.1.2 casting "short int" to "short unsigned int" ?

nd casted back after? -- 此致 敬礼！ 梁��

Is there some mistakes in comments of passes.c?

The comments in passes.c at the beginning are identical to toplev.c. -- 此致 敬礼！ 梁��

How to understand gcc source code?

Hello, everyone : I am learning compiler techniques. I want a live example. I also want to do my contributions to open source. So I turn to gcc. Last year I have added some instruction templates to one specific gcc backend as a task in work. I have read a little of "Using and Porting GCC". But st