https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96991
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> --- We run into assert: ... 913 gcc_assert (type == boolean_type_node); ... because: ... (gdb) call debug_generic_expr (type) _Bool (gdb) call debug_generic_expr (boolean_type_node) No symbol "boolean_type_node" in current context. (gdb) call debug_generic_expr (global_trees[TI_BOOLEAN_TYPE]) bool ...