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We currently do not expect comdat group of the guarded function to
be set at the time of generating pre and post check function.
However, in the case of an explicit instantiation, the guarded
function has been added to a comdat group before generating contract
check functions, which causes the observed ICE. Current assert
removed and an additional check for comdat group of the guarded
function added. With this change, the pre and post check functions
get added to the same comdat group of the guarded function if the
guarded function is already placed in a comdat group.
PR c++/116490
gcc/cp/ChangeLog:
* contracts.cc (build_contract_condition_function): added
a check for comdat group of the guarded function. If set,
the condition check function is added to the same comdat
group.
gcc/testsuite/ChangeLog:
* g++.dg/contracts/pr116490.C: New test.
Signed-off-by: Nina Ranns <dinka.ranns@gmail.com>
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[PR110871,PR110872,PR115434].
The current implementation of contracts emits the checks into function
bodies in three places; for pre-conditions at the start of the body,
for asserts in-line in the function body and for post-conditions as an
addition to return statements.
In general (at least with existing "2a" contract semantics) the in-line
contract asserts behave as expected.
However, the mechanism is not applicable to:
* Handling pre conditions in coroutines since, for those, the standard
specifies a wrapping of the original function body by functionality
implementing initial and final suspends (along with some housekeeping
to route exceptions). Thus for such transformed function bodies, the
preconditions then get actioned after the initial suspend, which does
not behave as intended.
* Handling post conditions in functions that do not have return
statements (which applies to coroutines and void functions).
In the following, we identify a potentially transformed function body
(in the case of coroutines, this is usually called the "ramp()" function).
The patch here re-implements the code insertion in one of the two
following ways (code for exposition only):
* For functions with no post-conditions we wrap the potentially
transformed function as follows:
{
handle_pre_condition_checking ();
potentially_transformed_function_body ();
}
This implements the intent that the preconditions are processed after
the function parameters are initialised but before any other actions.
* For functions with post-conditions:
if (preconditions_exist)
handle_pre_condition_checking ();
try
{
potentially_transformed_function_body ();
}
finally
{
handle_post_condition_checking ();
}
else [only if the function is not marked noexcept(true) ]
{
;
}
In this, post-conditions [that might apply to the return value etc.]
are evaluated on every non-exceptional edge out of the function.
At present, the model here is that exceptions thrown by the function
propagate upwards as if there were no contracts present. If the desired
semantic becomes that an exception is counted as equivalent to a contract
violation - then we can add a second handler in place of the empty
statement.
This patch specifically does not address changes to code-gen and constexpr
handling that are contained in P2900.
PR c++/115434
PR c++/110871
PR c++/110872
gcc/cp/ChangeLog:
* constexpr.cc (cxx_eval_constant_expression): Handle EH_ELSE_EXPR.
* contracts.cc (finish_contract_attribute): Remove excess line.
(build_contract_condition_function): Post condition handlers are
void now.
(emit_postconditions_cleanup): Remove.
(emit_postconditions): New.
(add_pre_condition_fn_call): New.
(add_post_condition_fn_call): New.
(apply_preconditions): New.
(apply_postconditions): New.
(maybe_apply_function_contracts): New.
(apply_postcondition_to_return): Remove.
* contracts.h (apply_postcondition_to_return): Remove.
(maybe_apply_function_contracts): Add.
* coroutines.cc (coro_build_actor_or_destroy_function): Do not
copy contracts to coroutine helpers.
* decl.cc (finish_function): Handle wrapping a possibly
transformed function body in contract checks.
* typeck.cc (check_return_expr): Remove handling of post
conditions on return expressions.
gcc/ChangeLog:
* gimplify.cc (struct gimplify_ctx): Add a flag to show we are
expending a handler.
(gimplify_expr): When we are expanding a handler, and the body
transforms might have re-written DECL_RESULT into a gimple var,
ensure that hander references to DECL_RESULT are also re-written
to refer to the gimple var. When we are processing an EH_ELSE
expression, then add it if either of the cleanup slots is in
use.
gcc/testsuite/ChangeLog:
* g++.dg/contracts/pr115434.C: New test.
* g++.dg/coroutines/pr110871.C: New test.
* g++.dg/coroutines/pr110872.C: New test.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
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During contract parsing, in grok_contract(), we proceed even if the
condition contains errors. This results in contracts with embedded errors
which eventually confuse gimplify. Checks for errors have been added in
grok_contract() to exit early if an error is encountered.
PR c++/113968
gcc/cp/ChangeLog:
* contracts.cc (grok_contract): Check for error_mark_node early
exit.
gcc/testsuite/ChangeLog:
* g++.dg/contracts/pr113968.C: New test.
Signed-off-by: Nina Ranns <dinka.ranns@gmail.com>
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Adds the xobj_flag member to lang_decl_fn and a corresponding member access
macro and predicate to support the addition of explicit object member
functions. Additionally, since explicit object member functions are also
non-static member functions, we need to change uses of
DECL_NONSTATIC_MEMBER_FUNCTION_P to clarify whether they intend to include
or exclude them.
PR c++/102609
gcc/cp/ChangeLog:
* cp-tree.h (struct lang_decl_fn): New data member.
(DECL_NONSTATIC_MEMBER_FUNCTION_P): Poison.
(DECL_IOBJ_MEMBER_FUNCTION_P): Define.
(DECL_FUNCTION_XOBJ_FLAG): Define.
(DECL_XOBJ_MEMBER_FUNCTION_P): Define.
(DECL_OBJECT_MEMBER_FUNCTION_P): Define.
(DECL_FUNCTION_MEMBER_P): Don't use
DECL_NONSTATIC_MEMBER_FUNCTION_P.
(DECL_CONST_MEMFUNC_P): Likewise.
(DECL_VOLATILE_MEMFUNC_P): Likewise.
(DECL_NONSTATIC_MEMBER_P): Likewise.
* module.cc (trees_out::lang_decl_bools): Handle xobj_flag.
(trees_in::lang_decl_bools): Handle xobj_flag.
* call.cc (build_this_conversion)
(add_function_candidate)
(add_template_candidate_real)
(add_candidates)
(maybe_warn_class_memaccess)
(cand_parms_match)
(joust)
(do_warn_dangling_reference)
* class.cc (finalize_literal_type_property)
(finish_struct)
(resolve_address_of_overloaded_function)
* constexpr.cc (is_valid_constexpr_fn)
(cxx_bind_parameters_in_call)
* contracts.cc (build_contract_condition_function)
* cp-objcp-common.cc (cp_decl_dwarf_attribute)
* cxx-pretty-print.cc (cxx_pretty_printer::postfix_expression)
(cxx_pretty_printer::declaration_specifiers)
(cxx_pretty_printer::direct_declarator)
* decl.cc (cp_finish_decl)
(grok_special_member_properties)
(start_preparsed_function)
(record_key_method_defined)
* decl2.cc (cp_handle_deprecated_or_unavailable)
* init.cc (find_uninit_fields_r)
(build_offset_ref)
* lambda.cc (lambda_expr_this_capture)
(maybe_generic_this_capture)
(nonlambda_method_basetype)
* mangle.cc (write_nested_name)
* method.cc (early_check_defaulted_comparison)
(skip_artificial_parms_for)
(num_artificial_parms_for)
* pt.cc (is_specialization_of_friend)
(determine_specialization)
(copy_default_args_to_explicit_spec)
(check_explicit_specialization)
(tsubst_contract_attribute)
(check_non_deducible_conversions)
(more_specialized_fn)
(maybe_instantiate_noexcept)
(register_parameter_specializations)
(value_dependent_expression_p)
* search.cc (shared_member_p)
(lookup_member)
(field_access_p)
* semantics.cc (finish_omp_declare_simd_methods)
* tree.cc (lvalue_kind)
* typeck.cc (invalid_nonstatic_memfn_p): Don't use
DECL_NONSTATIC_MEMBER_FUNCTION_P.
libcc1/ChangeLog:
* libcp1plugin.cc (plugin_pragma_push_user_expression): Don't use
DECL_NONSTATIC_MEMBER_FUNCTION_P.
Signed-off-by: Waffl3x <waffl3x@protonmail.com>
Co-authored-by: Jason Merrill <jason@redhat.com>
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When targetm.cxx.cdtor_return_this() holds, cdtors have a
non-VOID_TYPE_P result, but IMHO this ABI implementation detail
shouldn't leak to the abstract language conceptual framework, in which
cdtors don't have return values. For contracts, specifically those
that establish postconditions on results, such a leakage is present,
and the present patch puts an end to it: with it, cdtors get an error
for result postconditions regardless of the ABI. This fixes
g++.dg/contracts/contracts-ctor-dtor2.C on arm-eabi.
for gcc/cp/ChangeLog
* contracts.cc (check_postcondition_result): Cope with
cdtor_return_this.
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This patch eliminates the following functions that implicitly used
global_dc's file cache:
extern char_span location_get_source_line (const char *file_path, int line);
extern char_span get_source_file_content (const char *file_path);
extern bool location_missing_trailing_newline (const char *file_path);
in favor of explicitly using a specific file_cache throughout, and only
using global_dc's file_cache in gcc-specific code.
Rather than creating global_dc's file_cache the first time its needed,
this patch simply creates one when a diagnostic_context is initialized,
and eliminates diagnostic_file_cache_init.
No functional change intended.
gcc/c-family/ChangeLog:
* c-common.cc (c_get_substring_location): Use global_dc's
file_cache.
* c-format.cc (get_corrected_substring): Likewise.
* c-indentation.cc (get_visual_column): Add file_cache param.
(get_first_nws_vis_column): Likewise.
(detect_intervening_unindent): Likewise.
(should_warn_for_misleading_indentation): Use global_dc's
file_cache.
(assert_get_visual_column_succeeds): Add file_cache param.
(ASSERT_GET_VISUAL_COLUMN_SUCCEEDS): Likewise.
(assert_get_visual_column_fails): Likewise.
(define ASSERT_GET_VISUAL_COLUMN_FAILS): Likewise.
(selftest::test_get_visual_column): Create and use a temporary
file_cache.
gcc/cp/ChangeLog:
* contracts.cc (build_comment): Use global_dc's file_cache.
gcc/ChangeLog:
* diagnostic-format-sarif.cc (sarif_builder::get_sarif_column):
Use m_context's file_cache.
(sarif_builder::maybe_make_artifact_content_object): Likewise.
(sarif_builder::get_source_lines): Likewise.
* diagnostic-show-locus.cc
(exploc_with_display_col::exploc_with_display_col): Add file_cache
param.
(layout::m_file_cache): New field.
(make_range): Add file_cache param.
(selftest::test_layout_range_for_single_point): Create and use a
temporary file_cache.
(selftest::test_layout_range_for_single_line): Likewise.
(selftest::test_layout_range_for_multiple_lines): Likewise.
(layout::layout): Initialize m_file_cache from the context and use it.
(layout::maybe_add_location_range): Use m_file_cache.
(layout::calculate_x_offset_display): Likewise.
(get_affected_range): Add file_cache param.
(get_printed_columns): Likewise.
(line_corrections::line_corrections): Likewwise.
(line_corrections::m_file_cache): New field.
(source_line::source_line): Add file_cache param.
(line_corrections::add_hint): Use m_file_cache.
(layout::print_trailing_fixits): Likewise.
(layout::print_line): Likewise.
(selftest::test_layout_x_offset_display_utf8): Create and use a
temporary file_cache.
(selftest::test_layout_x_offset_display_tab): Likewise.
(selftest::test_diagnostic_show_locus_one_liner_utf8): Likewise.
(selftest::test_add_location_if_nearby): Pass global_dc's
file_cache to temp_source_file ctor.
(selftest::test_overlapped_fixit_printing): Create and use a
temporary file_cache.
(selftest::test_overlapped_fixit_printing_utf8): Likewise.
(selftest::test_overlapped_fixit_printing_2): Use dc's file_cache.
* diagnostic.cc (diagnostic_context::initialize): Always create a
file_cache.
(diagnostic_context::initialize_input_context): Assume
m_file_cache has already been created.
(diagnostic_context::create_edit_context): Pass m_file_cache to
edit_context.
(convert_column_unit): Add file_cache param.
(diagnostic_context::converted_column): Use context's file_cache.
(print_parseable_fixits): Add file_cache param.
(diagnostic_context::report_diagnostic): Use context's file_cache.
(selftest::test_print_parseable_fixits_none): Create and use a
temporary file_cache.
(selftest::test_print_parseable_fixits_insert): Likewise.
(selftest::test_print_parseable_fixits_remove): Likewise.
(selftest::test_print_parseable_fixits_replace): Likewise.
(selftest::test_print_parseable_fixits_bytes_vs_display_columns):
Likewise.
* diagnostic.h (diagnostic_context::file_cache_init): Delete.
(diagnostic_context::get_file_cache): Convert return type from
pointer to reference.
* edit-context.cc (edited_file::get_file_cache): New.
(edited_file::m_edit_context): New.
(edit_context::edit_context): Add file_cache param.
(edit_context::get_or_insert_file): Pass this to edited_file's
ctor.
(edited_file::edited_file): Add edit_context param.
(edited_file::print_content): Use get_file_cache.
(edited_file::print_diff_hunk): Likewise.
(edited_file::print_run_of_changed_lines): Likewise.
(edited_file::get_or_insert_line): Likewise.
(edited_file::get_num_lines): Likewise.
(edited_line::edited_line): Pass in file_cache and use it.
(selftest::test_get_content): Create and use a
temporary file_cache.
(selftest::test_applying_fixits_insert_before): Likewise.
(selftest::test_applying_fixits_insert_after): Likewise.
(selftest::test_applying_fixits_insert_after_at_line_end):
Likewise.
(selftest::test_applying_fixits_insert_after_failure): Likewise.
(selftest::test_applying_fixits_insert_containing_newline):
Likewise.
(selftest::test_applying_fixits_growing_replace): Likewise.
(selftest::test_applying_fixits_shrinking_replace): Likewise.
(selftest::test_applying_fixits_replace_containing_newline):
Likewise.
(selftest::test_applying_fixits_remove): Likewise.
(selftest::test_applying_fixits_multiple): Likewise.
(selftest::test_applying_fixits_multiple_lines): Likewise.
(selftest::test_applying_fixits_modernize_named_init): Likewise.
(selftest::test_applying_fixits_modernize_named_init): Likewise.
(selftest::test_applying_fixits_unreadable_file): Likewise.
(selftest::test_applying_fixits_line_out_of_range): Likewise.
(selftest::test_applying_fixits_column_validation): Likewise.
(selftest::test_applying_fixits_column_validation): Likewise.
(selftest::test_applying_fixits_column_validation): Likewise.
(selftest::test_applying_fixits_column_validation): Likewise.
* edit-context.h (edit_context::edit_context): Add file_cache
param.
(edit_context::get_file_cache): New.
(edit_context::m_file_cache): New.
* final.cc: Include "diagnostic.h".
(asm_show_source): Use global_dc's file_cache.
* gcc-rich-location.cc (blank_line_before_p): Add file_cache
param.
(use_new_line): Likewise.
(gcc_rich_location::add_fixit_insert_formatted): Use global dc's
file_cache.
* input.cc (diagnostic_file_cache_init): Delete.
(diagnostic_context::file_cache_init): Delete.
(diagnostics_file_cache_forcibly_evict_file): Delete.
(file_cache::missing_trailing_newline_p): New.
(file_cache::evicted_cache_tab_entry): Don't call
diagnostic_file_cache_init.
(location_get_source_line): Delete.
(get_source_text_between): Add file_cache param.
(get_source_file_content): Delete.
(location_missing_trailing_newline): Delete.
(location_compute_display_column): Add file_cache param.
(dump_location_info): Create and use temporary file_cache.
(get_substring_ranges_for_loc): Add file_cache param.
(get_location_within_string): Likewise.
(get_source_range_for_char): Likewise.
(get_num_source_ranges_for_substring): Likewise.
(selftest::test_reading_source_line): Create and use temporary
file_cache.
(selftest::lexer_test::m_file_cache): New field.
(selftest::assert_char_at_range): Use test.m_file_cache.
(selftest::assert_num_substring_ranges): Likewise.
(selftest::assert_has_no_substring_ranges): Likewise.
(selftest::test_lexer_string_locations_concatenation_2): Likewise.
* input.h (class file_cache): New forward decl.
(location_compute_display_column): Add file_cache param.
(location_get_source_line): Delete.
(get_source_text_between): Add file_cache param.
(get_source_file_content): Delete.
(location_missing_trailing_newline): Delete.
(file_cache::missing_trailing_newline_p): New decl.
(diagnostics_file_cache_forcibly_evict_file): Delete.
* selftest.cc (named_temp_file::named_temp_file): Add file_cache
param.
(named_temp_file::~named_temp_file): Optionally evict the file
from the given file_cache.
(temp_source_file::temp_source_file): Add file_cache param.
* selftest.h (class file_cache): New forward decl.
(named_temp_file::named_temp_file): Add file_cache param.
(named_temp_file::m_file_cache): New field.
(temp_source_file::temp_source_file): Add file_cache param.
* substring-locations.h (get_location_within_string): Add
file_cache param.
gcc/testsuite/ChangeLog:
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c: Use
global_dc's file cache.
* gcc.dg/plugin/expensive_selftests_plugin.c: Likewise.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
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As mentioned in the PR, constructing a message from two parts by
concatenating them prevents translations, unless one of the parts
is a keyword which should be never translated.
The following patch fixes that.
2023-03-28 Jakub Jelinek <jakub@redhat.com>
PR c++/109309
* contracts.cc: Include intl.h.
(check_postcondition_result): Don't form diagnostics from two halves
of an English message to allow translations.
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The lowercase constants are more consistent with the standard, and it is
unlikely that the uppercase versions would've been accepted.
gcc/cp/ChangeLog:
* contracts.cc: Rename references to
contract_violation_continuation_mode constants to be lowercase.
libstdc++-v3/ChangeLog:
* include/experimental/contract: Lowercase the constants in
contract_violation_continuation_mode.
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The first is an actual bug: remove_contract_attributes was only keeping one
attribute. The second just helps flow analysis in optimizers and static
analyzers.
gcc/cp/ChangeLog:
* contracts.cc (remove_contract_attributes): Actually prepend
to the list.
* pt.cc (tsubst_contract): Only look for a postcondition if type is
nonnull.
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The contracts implementation was using strchrnul, which is a glibc
extension, so bootstrap broke on non-glibc targets. Use C89 strcspn
instead.
PR c++/107781
gcc/cp/ChangeLog:
* contracts.cc (role_name_equal): Use strcspn instead
of strchrnul.
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Fixing -Wunused-parm warnings and link errors depending on where -fcontracts
appears on the command line.
gcc/cp/ChangeLog:
* contracts.cc (build_contract_condition_function):
Set DECL_ARTIFICIAL on return value parm.
* g++spec.cc (lang_specific_driver): Add -lstdc++exp
just before -lstdc++.
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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.
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