http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904
--- Comment #7 from Laurent Rineau <Laurent.Rineau__gcc at normalesup dot org> --- In the test case, nfds cannot overflow, because of two reasons: - nfds is only incremented from 0, and -fstrict-overflow allows gcc to suppose it will not overflow, - the number of iterations of the loop cannot allow nfds to overflow, even without -fstrict-overflow. Gcc warns that the test (nfds < 0) is useless, because of -fstrict-overflow. The developer has two solutions: - remove that test, - or compile with -fno-strict-overflow.
