How to hint to GCC that a line should be unreachable at compile time?

Question

It\'s common for compilers to provide a switch to warn when code is unreachable. I\'ve also seen macros for some libraries, that provide assertions for unreachable code.

Answer 1

gcc 4.5 supports the __builtin_unreachable() compiler inline, combining this with -Wunreachable-code might do what you want, but will probably cause spurious warnings