internal compiler error: in connect_traces, at dwarf2cfi.c:2676

Quite early on in compilling LO I get the following error. Any suggestions on 
how to resolve. It seems to suggest it's a problem with gcc not with LO.

> /usr/bin/make -j 2 -rs -f /home/libreoffice/Downloads/core/Makefile.gbuild \
>
>          \
>          \
>          \
>         
>         all
>
> [build DEP] LNK:Library/libbasegfxlo.so
> [build DEP] LNK:Library/libucbhelper.so
> [build LNK] Library/libucbhelper.so
> [build CXX] basegfx/source/polygon/b2dsvgpolypolygon.cxx
> [build CXX] basegfx/source/polygon/b3dpolygontools.cxx
> [build CXX] basegfx/source/polygon/b3dpolypolygon.cxx
> /home/libreoffice/Downloads/core/basegfx/source/polygon/b2dsvgpolypolygon.cx
> x: In function 'rtl::OUString basegfx::tools::exportToSvgD(const
> basegfx::B2DPolyPolygon&, bool, bool, bool)':
> /home/libreoffice/Downloads/core/basegfx/source/polygon/b2dsvgpolypolygon.c
> xx:935:9: internal compiler error: in connect_traces, at dwarf2cfi.c:2676> 
>          }
>          ^
>
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.
> make[1]: ***
> [/home/libreoffice/Downloads/core/workdir/CxxObject/basegfx/source/polygon/
> b2dsvgpolypolygon.o] Error 1 make[1]: *** Waiting for unfinished jobs....
> make: *** [build] Error 2


Alex