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
/bench/wtperf/wtperf.c:1357: DEADCODE 156361 Condition "first", taking false branch. Now the value of "first" is equal to 0.
/bench/wtperf/wtperf.c:1360: DEADCODE 156361 Assigning: "first" = "false".
/bench/wtperf/wtperf.c:1369: DEADCODE 156361 At condition "first", the value of "first" must be equal to 0.
/bench/wtperf/wtperf.c:1368: DEADCODE 156361 The condition "first" cannot be true.
/bench/wtperf/wtperf.c:1368: DEADCODE 156361 Execution cannot reach the expression ""Full"" inside this statement: "lprintf(wtperf, 0, 0U, "%s:...".