There are several common cases where code will not be executed.
Example #1: from Linux-2.6-rc3 file
net/key/af_key.c
477
case IPPROTO_COMP:
478
return SADB_X_SATYPE_IPCOMP;
479
break;
Trailing break statement will never be reached.
Example #2: from Linux-2.6-rc3
sound/core/oss/pcm_oss.c
1647 if
(ptrl == task_name) {
1648
goto __not_found;
1649
return NULL;
1650 }
return statement after goto will never be reached
Example #3: from Linux-2.6-rc3
fs/reiserfs/journal.c
924
while (1) {
925
other_jl = JOURNAL_LIST_ENTRY(entry);
926-950 ........
951 }
952
return 0;
statements after an an infinite loop are rarely executed :-)
How to resolve:
Removing unnecessary code is usually
the
preferred course of action.
