RUN: diagtool list-warnings > %t 2>&1 RUN: FileCheck --input-file=%t %s This test serves two purposes: (1) It documents all existing warnings that currently have no associated -W flag, and ensures that the list never grows. If take an existing warning and add a flag, this test will fail. To fix this test, simply remove that warning from the list below. (2) It prevents us adding new warnings to Clang that have no -W flag. All new warnings should have -W flags. If you add a new warning without a flag, this test will fail. To fix this test, simply add a warning group to that warning. The list of warnings below should NEVER grow. It should gradually shrink to 0. CHECK: Warnings without flags (78): CHECK-NEXT: ext_excess_initializers CHECK-NEXT: ext_excess_initializers_in_char_array_initializer CHECK-NEXT: ext_expected_semi_decl_list CHECK-NEXT: ext_explicit_specialization_storage_class CHECK-NEXT: ext_initializer_string_for_char_array_too_long CHECK-NEXT: ext_missing_declspec CHECK-NEXT: ext_missing_whitespace_after_macro_name CHECK-NEXT: ext_new_paren_array_nonconst CHECK-NEXT: ext_plain_complex CHECK-NEXT: ext_template_arg_extra_parens CHECK-NEXT: ext_typecheck_comparison_of_pointer_integer CHECK-NEXT: ext_typecheck_cond_incompatible_operands CHECK-NEXT: ext_typecheck_ordered_comparison_of_function_pointers CHECK-NEXT: ext_typecheck_ordered_comparison_of_pointer_integer CHECK-NEXT: ext_using_undefined_std CHECK-NEXT: pp_invalid_string_literal CHECK-NEXT: pp_out_of_date_dependency CHECK-NEXT: pp_poisoning_existing_macro CHECK-NEXT: warn_accessor_property_type_mismatch CHECK-NEXT: warn_arcmt_nsalloc_realloc CHECK-NEXT: warn_asm_label_on_auto_decl CHECK-NEXT: warn_c_kext CHECK-NEXT: warn_call_to_pure_virtual_member_function_from_ctor_dtor CHECK-NEXT: warn_call_wrong_number_of_arguments CHECK-NEXT: warn_case_empty_range CHECK-NEXT: warn_char_constant_too_large CHECK-NEXT: warn_collection_expr_type CHECK-NEXT: warn_conflicting_variadic CHECK-NEXT: warn_conv_to_base_not_used CHECK-NEXT: warn_conv_to_self_not_used CHECK-NEXT: warn_conv_to_void_not_used CHECK-NEXT: warn_delete_array_type CHECK-NEXT: warn_double_const_requires_fp64 CHECK-NEXT: warn_drv_assuming_mfloat_abi_is CHECK-NEXT: warn_drv_clang_unsupported CHECK-NEXT: warn_drv_pch_not_first_include CHECK-NEXT: warn_dup_category_def CHECK-NEXT: warn_enum_value_overflow CHECK-NEXT: warn_expected_qualified_after_typename CHECK-NEXT: warn_extraneous_char_constant CHECK-NEXT: warn_fe_cc_log_diagnostics_failure CHECK-NEXT: warn_fe_cc_print_header_failure CHECK-NEXT: warn_fe_macro_contains_embedded_newline CHECK-NEXT: warn_ignoring_ftabstop_value CHECK-NEXT: warn_implements_nscopying CHECK-NEXT: warn_incompatible_qualified_id CHECK-NEXT: warn_inline_namespace_reopened_noninline CHECK-NEXT: warn_invalid_asm_cast_lvalue CHECK-NEXT: warn_maynot_respond CHECK-NEXT: warn_method_param_redefinition CHECK-NEXT: warn_missing_case_for_condition CHECK-NEXT: warn_missing_dependent_template_keyword CHECK-NEXT: warn_missing_whitespace_after_macro_name CHECK-NEXT: warn_mt_message CHECK-NEXT: warn_no_constructor_for_refconst CHECK-NEXT: warn_not_compound_assign CHECK-NEXT: warn_objc_property_copy_missing_on_block CHECK-NEXT: warn_objc_protocol_qualifier_missing_id CHECK-NEXT: warn_on_superclass_use CHECK-NEXT: warn_pp_convert_to_positive CHECK-NEXT: warn_pp_expr_overflow CHECK-NEXT: warn_pp_line_decimal CHECK-NEXT: warn_pragma_pack_pop_identifer_and_alignment CHECK-NEXT: warn_pragma_pack_show CHECK-NEXT: warn_property_getter_owning_mismatch CHECK-NEXT: warn_register_objc_catch_parm CHECK-NEXT: warn_related_result_type_compatibility_class CHECK-NEXT: warn_related_result_type_compatibility_protocol CHECK-NEXT: warn_template_export_unsupported CHECK-NEXT: warn_template_spec_extra_headers CHECK-NEXT: warn_tentative_incomplete_array CHECK-NEXT: warn_typecheck_function_qualifiers CHECK-NEXT: warn_undef_interface CHECK-NEXT: warn_undef_interface_suggest CHECK-NEXT: warn_undef_protocolref CHECK-NEXT: warn_use_out_of_scope_declaration CHECK-NEXT: warn_weak_identifier_undeclared CHECK-NEXT: warn_weak_import The list of warnings in -Wpedantic should NEVER grow. CHECK: Number in -Wpedantic (not covered by other -W flags): 27