Is it worthwhile reporting building issues against the latest launchpad (thanks to Josh Andler for pointing it out to me) tarballs or simply wait for the next revision hoping it's fixed?

For example, while build revision 13270, I encountered this error:

2geom/toposweep.cpp: In member function 'Geom::TopoGraph::Edge Geom::TopoGraph::remove_edge(unsigned int, unsigned int)':
2geom/toposweep.cpp:56:1: error: control reaches end of non-void function [-Werror=return-type]
cc1plus.exe: some warnings being treated as errors
Makefile:8041: recipe for target `2geom/toposweep.o' failed
make[3]: *** [2geom/toposweep.o] Error 1
make[3]: Leaving directory `/usr/src/graphics/inkscape/revison-13270/src'
Makefile:5049: recipe for target `all' failed
make[2]: *** [all] Error 2
make[2]: Leaving directory `/usr/src/graphics/inkscape/revison-13270/src'
Makefile:1070: recipe for target `all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/src/graphics/inkscape/revison-13270'
Makefile:765: recipe for target `all' failed
make: *** [all] Error 2

Building on Win 8.1 64-bit using gcc 4.8.1 and Mingw.