K 10
svn:author
V 6
iulius
K 8
svn:date
V 27
2017-11-04T15:34:52.663941Z
K 7
svn:log
V 345
Enforce new GCC 6 warning options; fix possible NULL-pointer dereferences

Add the following warning options:
-Wnull-dereference
-Wshift-overflow=2
-Wduplicated-cond

Do not explicitly mention -Wendif-labels because it is enabled by default.
Also use -O3 instead of -O2.

Fix in timehash and buffindexed code possible NULL-pointer dereferences.

END
