C / C++ Traps

程序设计

C: pointer cast

gcc doesn't warn pointer cast by default. Sometimes you want to cast a const void * to const char *, but unfortunately you wrote char *. gcc won't warn you!

C: no return

C return random shit if you forget your return statement. A wild pointer make you think, "Oh, it points to somewhere safe to visit." Well, actually it doesn't. I found I lost some many return statements in NROS kernel! WTF.

C: implicit declaration

C++: redefine variable i