I just tried to compile Suse Linux package enblend-3.0-8 with the GNU C compiler version 4.3 snapshot 20070803.
The compiler said from enblend.cc:121: anneal.h: At global scope: anneal.h:61: internal compiler error: in reference_to_unused, at dwarf2out.c:10305 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. Preprocessed gzipped source attached. Flag -g required. -- Summary: ice with -g for legal code Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dcb314 at hotmail dot com GCC host triplet: x86_64-suse-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33026