Logically dead code

The indicated dead code may have performed some action; that action will never occur. Code can never be reached because of a logical contradiction
/test/utility/parse_opts.c:146: DEADCODE 133976 Condition "ch == 63", taking false branch. Now the value of "ch" cannot be equal to 63.
/test/utility/parse_opts.c:149: DEADCODE 133976 When switching on "ch", the value of "ch" cannot be equal to 63.
/test/utility/parse_opts.c:202: DEADCODE 133976 The "switch" governing value "ch" cannot be "63".
/test/utility/parse_opts.c:202: DEADCODE 133976 Execution cannot reach this statement: "case 63:".