Definition from Wiktionary, the free dictionary
- (compilers) instructions that, when executed, have no effect on the running of the program.
2006, William Von Hagen, The definitive guide to GCC:
- Much dead code elimination is actually done on intermediate representations of your code, which may contain unnecessary intermediate calculations […]
- (programming) code that exists in the source, but that will never be executed.
- Many software projects contain much dead code in the form of deprecated functions.
When discussing compilers, a set of instructions that will never be executed may be referred to as an "unreachable block".
instructions that have no effect on the running of the program