seen with current gcc-4_2-branch and trunk, works with current gcc-4_1-branch.
$ gcc-4.2 -Wall -O3 -g -s mycompute_ml-gccbug.c mycompute_ml-gccbug.c: In function 'matmat': mycompute_ml-gccbug.c:23: internal compiler error: in gen_tagged_type_instantiation_die, at dwarf2out.c:12762 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. -- Summary: [4.2 4.3 regression] ICE in gen_tagged_type_instantiation_die, at dwarf2out.c:12762 Product: gcc Version: 4.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: regression AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: doko at ubuntu dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32610
