552c6c2328
Old GCC used to aggressively fold VLAs to constant-bound arrays at block scope in GNU mode. That's non-conforming, and more modern versions of GCC only do this at file scope. Update Clang to do the same. Also promote the warning for this from off-by-default to on-by-default in all cases; more recent versions of GCC likewise warn on this by default. This is still slightly more permissive than GCC, as pointed out in PR44406, as we still fold VLAs to constant arrays in structs, but that seems justifiable given that we don't support VLA-in-struct (and don't intend to ever support it), but GCC does. Differential Revision: https://reviews.llvm.org/D89523
95 lines
3.8 KiB
C
95 lines
3.8 KiB
C
RUN: diagtool list-warnings > %t 2>&1
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RUN: FileCheck --input-file=%t %s
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This test serves two purposes:
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(1) It documents all existing warnings that currently have no associated -W flag,
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and ensures that the list never grows.
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If you take an existing warning and add a flag, this test will fail.
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To fix this test, simply remove that warning from the list below.
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(2) It prevents us adding new warnings to Clang that have no -W flag. All
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new warnings should have -W flags.
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If you add a new warning without a flag, this test will fail. To fix
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this test, simply add a warning group to that warning.
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The list of warnings below should NEVER grow. It should gradually shrink to 0.
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CHECK: Warnings without flags (68):
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CHECK-NEXT: ext_expected_semi_decl_list
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CHECK-NEXT: ext_explicit_specialization_storage_class
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CHECK-NEXT: ext_missing_declspec
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CHECK-NEXT: ext_missing_whitespace_after_macro_name
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CHECK-NEXT: ext_new_paren_array_nonconst
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CHECK-NEXT: ext_plain_complex
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CHECK-NEXT: ext_template_arg_extra_parens
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CHECK-NEXT: ext_typecheck_cond_incompatible_operands
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CHECK-NEXT: ext_typecheck_ordered_comparison_of_pointer_integer
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CHECK-NEXT: ext_using_undefined_std
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CHECK-NEXT: pp_invalid_string_literal
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CHECK-NEXT: pp_out_of_date_dependency
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CHECK-NEXT: pp_poisoning_existing_macro
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CHECK-NEXT: warn_accessor_property_type_mismatch
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CHECK-NEXT: warn_arcmt_nsalloc_realloc
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CHECK-NEXT: warn_asm_label_on_auto_decl
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CHECK-NEXT: warn_c_kext
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CHECK-NEXT: warn_call_wrong_number_of_arguments
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CHECK-NEXT: warn_case_empty_range
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CHECK-NEXT: warn_char_constant_too_large
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CHECK-NEXT: warn_collection_expr_type
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CHECK-NEXT: warn_conflicting_variadic
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CHECK-NEXT: warn_delete_array_type
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CHECK-NEXT: warn_double_const_requires_fp64
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CHECK-NEXT: warn_drv_assuming_mfloat_abi_is
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CHECK-NEXT: warn_drv_clang_unsupported
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CHECK-NEXT: warn_drv_pch_not_first_include
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CHECK-NEXT: warn_dup_category_def
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CHECK-NEXT: warn_enum_value_overflow
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CHECK-NEXT: warn_expected_qualified_after_typename
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CHECK-NEXT: warn_extraneous_char_constant
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CHECK-NEXT: warn_fe_backend_unsupported
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CHECK-NEXT: warn_fe_cc_log_diagnostics_failure
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CHECK-NEXT: warn_fe_cc_print_header_failure
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CHECK-NEXT: warn_fe_macro_contains_embedded_newline
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CHECK-NEXT: warn_ignoring_ftabstop_value
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CHECK-NEXT: warn_implements_nscopying
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CHECK-NEXT: warn_incompatible_qualified_id
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CHECK-NEXT: warn_invalid_asm_cast_lvalue
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CHECK-NEXT: warn_maynot_respond
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CHECK-NEXT: warn_method_param_redefinition
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CHECK-NEXT: warn_missing_case_for_condition
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CHECK-NEXT: warn_missing_dependent_template_keyword
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CHECK-NEXT: warn_missing_whitespace_after_macro_name
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CHECK-NEXT: warn_mt_message
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CHECK-NEXT: warn_no_constructor_for_refconst
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CHECK-NEXT: warn_not_compound_assign
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CHECK-NEXT: warn_objc_property_copy_missing_on_block
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CHECK-NEXT: warn_objc_protocol_qualifier_missing_id
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CHECK-NEXT: warn_on_superclass_use
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CHECK-NEXT: warn_pp_convert_to_positive
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CHECK-NEXT: warn_pp_expr_overflow
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CHECK-NEXT: warn_pp_line_decimal
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CHECK-NEXT: warn_pragma_pack_pop_identifier_and_alignment
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CHECK-NEXT: warn_pragma_pack_show
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CHECK-NEXT: warn_property_getter_owning_mismatch
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CHECK-NEXT: warn_register_objc_catch_parm
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CHECK-NEXT: warn_related_result_type_compatibility_class
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CHECK-NEXT: warn_related_result_type_compatibility_protocol
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CHECK-NEXT: warn_template_export_unsupported
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CHECK-NEXT: warn_template_spec_extra_headers
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CHECK-NEXT: warn_tentative_incomplete_array
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CHECK-NEXT: warn_typecheck_function_qualifiers
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CHECK-NEXT: warn_undef_interface
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CHECK-NEXT: warn_undef_interface_suggest
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CHECK-NEXT: warn_undef_protocolref
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CHECK-NEXT: warn_weak_identifier_undeclared
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CHECK-NEXT: warn_weak_import
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The list of warnings in -Wpedantic should NEVER grow.
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CHECK: Number in -Wpedantic (not covered by other -W flags): 26
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