Jeff Chapman II
2efb237ffc
Implement the P1492 versions of contracts, along with extensions that support the emulation of N4820 and other proposals. This implementation assigns a concrete semantic (one of: ignore, assume, enforce, or observe) to each contract attribute depending on its labels and configuration options. Co-authored-by: Andrew Sutton <asutton@lock3software.com> Co-authored-by: Andrew Marmaduke <amarmaduke@lock3software.com> Co-authored-by: Michael Lopez <mlopez@lock3software.com> Co-authored-by: Jason Merrill <jason@redhat.com> gcc/ChangeLog: * doc/invoke.texi: Document contracts flags. gcc/c-family/ChangeLog: * c.opt: Add contracts flags. * c-cppbuiltin.cc (c_cpp_builtins): Add contracts feature-test macros. gcc/cp/ChangeLog: * cp-tree.h (enum cp_tree_index): Add CPTI_PSEUDO_CONTRACT_VIOLATION. (pseudo_contract_violation_type): New macro. (struct saved_scope): Add x_processing_contract_condition. (processing_contract_condition): New macro. (comparing_override_contracts): New variable decl. (find_contract): New inline. (set_decl_contracts): New inline. (get_contract_semantic): New inline. (set_contract_semantic): New inline. * constexpr.cc (cxx_eval_assert): Split out from... (cxx_eval_internal_function): ...here. (cxx_eval_constant_expression): Use it for contracts. (potential_constant_expression_1): Handle contracts. * cp-gimplify.cc (cp_genericize_r): Handle contracts. * cp-objcp-common.cc (cp_tree_size): Handle contracts. (cp_common_init_ts): Handle contracts. (cp_handle_option): Handle contracts. * decl.cc (duplicate_decls): Handle contracts. (check_tag_decl): Check for bogus contracts. (start_decl): Check flag_contracts. (grokfndecl): Call rebuild_postconditions. (grokdeclarator): Handle contract attributes. (start_preparsed_function): Call start_function_contracts. (finish_function): Call finish_function_contracts. * decl2.cc (cp_check_const_attributes): Skip contracts. (comdat_linkage): Handle outlined contracts. * error.cc (dump_type): Handle null TYPE_IDENTIFIER. * g++spec.cc (EXPERIMENTAL): New macro. (lang_specific_driver): Add -lstdc++exp if -fcontracts. * mangle.cc (write_encoding): Handle outlined contracts. * module.cc (trees_out::fn_parms_init): Handle outlined contracts. (trees_in::fn_parms_init): Likewise. (check_mergeable_decl): Likewise. (module_state_config::get_dialect): Record -fcontracts. * parser.h (struct cp_unparsed_functions_entry): Add contracts. * parser.cc (unparsed_contracts): New macro. (push_unparsed_function_queues): Adjust. (contract_attribute_p): New. (cp_parser_statement): Check contracts. (cp_parser_decl_specifier_seq): Handle contracts. (cp_parser_skip_to_closing_square_bracket): Split out... (cp_parser_skip_up_to_closing_square_bracket): ...this fn. (cp_parser_class_specifier): Do contract late parsing. (cp_parser_class_head): Check contracts. (cp_parser_contract_role): New. (cp_parser_contract_mode_opt): New. (find_error, contains_error_p): New. (cp_parser_contract_attribute_spec): New. (cp_parser_late_contract_condition): New. (cp_parser_std_attribute_spec): Handle contracts. (cp_parser_save_default_args): Also save contracts. * pt.cc (register_parameter_specializations): No longer static. (register_local_identity): New. (check_explicit_specialization): Call remove_contract_attributes. (tsubst_contract, tsubst_contract_attribute): New. (tsubst_contract_attributes): New. (tsubst_attribute): Add comment. (tsubst_copy): Also allow parm when processing_contract_condition. (tsubst_expr): Handle contracts. (regenerate_decl_from_template): Handle contracts. * search.cc (check_final_overrider): Compare contracts. * semantics.cc (set_cleanup_locs): Skip POSTCONDITION_STMT. (finish_non_static_data_member): Check contracts. (finish_this_expr): Check contracts. (process_outer_var_ref): Handle contracts. (finish_id_expression_1): Handle contracts. (apply_deduced_return_type): Adjust contracts. * tree.cc (handle_contract_attribute): New. (get_innermost_component, is_this_expression): New. (comparing_this_references): New. (equivalent_member_references): New. (cp_tree_equal): Check it. * typeck.cc (check_return_expr): Apply contracts. * Make-lang.in: Add contracts.o. * config-lang.in: Add contracts.cc. * cp-tree.def (ASSERTION_STMT, PRECONDITION_STMT) (POSTCONDITION_STMT): New. * contracts.h: New file. * contracts.cc: New file. gcc/testsuite/ChangeLog: * g++.dg/modules/modules.exp: Pass dg-options to link command. * lib/g++.exp: Add -L for libstdc++exp.a. * g++.dg/contracts/backtrace_handler/assert_fail.cpp: New test. * g++.dg/contracts/backtrace_handler/handle_contract_violation.cpp: New test. * g++.dg/contracts/contracts-access1.C: New test. * g++.dg/contracts/contracts-assume1.C: New test. * g++.dg/contracts/contracts-assume2.C: New test. * g++.dg/contracts/contracts-assume3.C: New test. * g++.dg/contracts/contracts-assume4.C: New test. * g++.dg/contracts/contracts-assume5.C: New test. * g++.dg/contracts/contracts-assume6.C: New test. * g++.dg/contracts/contracts-comdat1.C: New test. * g++.dg/contracts/contracts-config1.C: New test. * g++.dg/contracts/contracts-constexpr1.C: New test. * g++.dg/contracts/contracts-constexpr2.C: New test. * g++.dg/contracts/contracts-constexpr3.C: New test. * g++.dg/contracts/contracts-conversion1.C: New test. * g++.dg/contracts/contracts-ctor-dtor1.C: New test. * g++.dg/contracts/contracts-ctor-dtor2.C: New test. * g++.dg/contracts/contracts-cv1.C: New test. * g++.dg/contracts/contracts-deduced1.C: New test. * g++.dg/contracts/contracts-deduced2.C: New test. * g++.dg/contracts/contracts-friend1.C: New test. * g++.dg/contracts/contracts-ft1.C: New test. * g++.dg/contracts/contracts-ignore1.C: New test. * g++.dg/contracts/contracts-ignore2.C: New test. * g++.dg/contracts/contracts-large-return.C: New test. * g++.dg/contracts/contracts-multiline1.C: New test. * g++.dg/contracts/contracts-multiple-inheritance1.C: New test. * g++.dg/contracts/contracts-multiple-inheritance2.C: New test. * g++.dg/contracts/contracts-nested-class1.C: New test. * g++.dg/contracts/contracts-nested-class2.C: New test. * g++.dg/contracts/contracts-nocopy1.C: New test. * g++.dg/contracts/contracts-override.C: New test. * g++.dg/contracts/contracts-post1.C: New test. * g++.dg/contracts/contracts-post2.C: New test. * g++.dg/contracts/contracts-post3.C: New test. * g++.dg/contracts/contracts-post4.C: New test. * g++.dg/contracts/contracts-post5.C: New test. * g++.dg/contracts/contracts-post6.C: New test. * g++.dg/contracts/contracts-pre1.C: New test. * g++.dg/contracts/contracts-pre10.C: New test. * g++.dg/contracts/contracts-pre2.C: New test. * g++.dg/contracts/contracts-pre2a1.C: New test. * g++.dg/contracts/contracts-pre2a2.C: New test. * g++.dg/contracts/contracts-pre3.C: New test. * g++.dg/contracts/contracts-pre4.C: New test. * g++.dg/contracts/contracts-pre5.C: New test. * g++.dg/contracts/contracts-pre6.C: New test. * g++.dg/contracts/contracts-pre7.C: New test. * g++.dg/contracts/contracts-pre9.C: New test. * g++.dg/contracts/contracts-redecl1.C: New test. * g++.dg/contracts/contracts-redecl2.C: New test. * g++.dg/contracts/contracts-redecl3.C: New test. * g++.dg/contracts/contracts-redecl4.C: New test. * g++.dg/contracts/contracts-redecl5.C: New test. * g++.dg/contracts/contracts-redecl6.C: New test. * g++.dg/contracts/contracts-redecl7.C: New test. * g++.dg/contracts/contracts-redecl8.C: New test. * g++.dg/contracts/contracts-tmpl-attr1.C: New test. * g++.dg/contracts/contracts-tmpl-spec1.C: New test. * g++.dg/contracts/contracts-tmpl-spec2.C: New test. * g++.dg/contracts/contracts-tmpl-spec3.C: New test. * g++.dg/contracts/contracts1.C: New test. * g++.dg/contracts/contracts10.C: New test. * g++.dg/contracts/contracts11.C: New test. * g++.dg/contracts/contracts12.C: New test. * g++.dg/contracts/contracts13.C: New test. * g++.dg/contracts/contracts14.C: New test. * g++.dg/contracts/contracts15.C: New test. * g++.dg/contracts/contracts16.C: New test. * g++.dg/contracts/contracts17.C: New test. * g++.dg/contracts/contracts18.C: New test. * g++.dg/contracts/contracts19.C: New test. * g++.dg/contracts/contracts2.C: New test. * g++.dg/contracts/contracts20.C: New test. * g++.dg/contracts/contracts22.C: New test. * g++.dg/contracts/contracts24.C: New test. * g++.dg/contracts/contracts25.C: New test. * g++.dg/contracts/contracts3.C: New test. * g++.dg/contracts/contracts35.C: New test. * g++.dg/contracts/contracts4.C: New test. * g++.dg/contracts/contracts5.C: New test. * g++.dg/contracts/contracts6.C: New test. * g++.dg/contracts/contracts7.C: New test. * g++.dg/contracts/contracts8.C: New test. * g++.dg/contracts/contracts9.C: New test. * g++.dg/modules/contracts-1_a.C: New test. * g++.dg/modules/contracts-1_b.C: New test. * g++.dg/modules/contracts-2_a.C: New test. * g++.dg/modules/contracts-2_b.C: New test. * g++.dg/modules/contracts-2_c.C: New test. * g++.dg/modules/contracts-3_a.C: New test. * g++.dg/modules/contracts-3_b.C: New test. * g++.dg/modules/contracts-4_a.C: New test. * g++.dg/modules/contracts-4_b.C: New test. * g++.dg/modules/contracts-4_c.C: New test. * g++.dg/modules/contracts-4_d.C: New test. * g++.dg/modules/contracts-tpl-friend-1_a.C: New test. * g++.dg/modules/contracts-tpl-friend-1_b.C: New test. * g++.dg/contracts/backtrace_handler/Makefile: New test. * g++.dg/contracts/backtrace_handler/README: New test. * g++.dg/contracts/backtrace_handler/example_out.txt: New test. * g++.dg/contracts/backtrace_handler/example_pretty.txt: New test. * g++.dg/contracts/backtrace_handler/prettytrace.sh: New test. * g++.dg/contracts/except_preload_handler/Makefile: New test. * g++.dg/contracts/except_preload_handler/README: New test. * g++.dg/contracts/except_preload_handler/assert_fail.cpp: New test. * g++.dg/contracts/except_preload_handler/handle_contract_violation.cpp: New test. * g++.dg/contracts/noexcept_preload_handler/Makefile: New test. * g++.dg/contracts/noexcept_preload_handler/README: New test. * g++.dg/contracts/noexcept_preload_handler/assert_fail.cpp: New test. * g++.dg/contracts/noexcept_preload_handler/handle_contract_violation.cpp: New test. * g++.dg/contracts/preload_handler/Makefile: New test. * g++.dg/contracts/preload_handler/README: New test. * g++.dg/contracts/preload_handler/assert_fail.cpp: New test. * g++.dg/contracts/preload_handler/handle_contract_violation.cpp: New test. * g++.dg/contracts/preload_nocontinue_handler/Makefile: New test. * g++.dg/contracts/preload_nocontinue_handler/README: New test. * g++.dg/contracts/preload_nocontinue_handler/assert_fail.cpp: New test. * g++.dg/contracts/preload_nocontinue_handler/handle_contract_violation.cpp: New test. * g++.dg/contracts/preload_nocontinue_handler/nocontinue.cpp: New test.
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.