https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96641
David Malcolm <dmalcolm at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2020-08-17 --- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> --- Thanks for filing this; confirmed both the Fortran and C++ cases. The tree codes in question are debug_expr_decl and obj_type_ref respectively. The old implementation of region_model::get_rvalue_1 gracefully handled tree codes it didn't understand, returning "UNKNOWN", whereas the new implementation has an assertion left over from development. Working on a fix.