Ada.Tags cannot be compiled with -O3. GCC and Ada.Tags from SVN revision 152434.
% gcc -c -gnatg -gnatp -O3 a-tags.adb +===========================GNAT BUG DETECTED==============================+ | 4.5.0 20091003 (experimental) (x86_64-unknown-linux-gnu) GCC error: | | in vectorizable_store, at tree-vect-stmts.c:3203 | | Error detected around /home/sam/Dev/gcc/gcc/ada/a-tags.ads:252:4 | -- Summary: ICE when compiling Ada.Tags with -O3 Product: gcc Version: 4.5.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: ada AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: sam at gcc dot gnu dot org GCC host triplet: x86_64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41563