1. 2018-01-31 [1] Re: [geos-devel] [GEOS] #523: SymDifference between two valid geometries geos-devel GEOS 2. 2018-01-16 [2] [geos-devel] [GEOS] #853: Windows compile failing on 32/64bit with CMake geos-devel GEOS 3. 2018-01-10 [1] [geos-devel] [GEOS] #850: Segfault in geos::algorithm::ConvexHull::preSo geos-devel GEOS 4. 2018-01-05 [4] [geos-devel] dynamic_cast may yield null pointers in AbstractSTRtree::qu geos-devel Kurt Schwehr 5. 2018-01-05 [2] [geos-devel] [GEOS] #849: clang-tidy: readability-container-size-empty s geos-devel GEOS