https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87286
Bug ID: 87286 Summary: ICE on vectors of enums Product: gcc Version: 9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: rsandifo at gcc dot gnu.org Target Milestone: --- This testcase: enum foo { F }; typedef enum foo vec_foo __attribute__((vector_size (16))); vec_foo add (vec_foo x, vec_foo y) { return x + y; } triggers: internal compiler error: in vector_types_compatible_elements_p This seems to be a disagreement between handle_vector_size_attribute (which accepts INTEGRAL_TYPE_Ps except BOOLEAN_TYPE) and vector_types_compatible_elements_p (which uses INTEGER_TYPE instead of INTEGRAL_TYPE_P). Not sure whether the intent was to forbid vectors of enums, so not sure whether this is ice-on-valid or ice-on-invalid.