There are several common cases where code will not be executed.
Example #1: from Linux-2.6-rc3 file
sound/core/oss/plugin_ops.h
305 #ifdef GET_S16_END
306 while(0) {
307 - 320 ....
321 }
322 #endif
Code inside while(0) will not be executed.
How to resolve:
Removing unnecessary code is usually
the
preferred course of action.
