| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
A common pattern before C++17 is the generator function, used to avoid
having to specify the type of a container element by using a function call
to get type deduction; for example, std::make_pair. C++17 added class type
argument deduction, making generator functions unnecessary for many uses,
but GCC won't be written in C++17 for years yet.
gcc/cp/ChangeLog:
* cp-tree.h (struct type_identity): New.
(make_temp_override): New.
* decl.c (grokdeclarator): Use it.
* except.c (maybe_noexcept_warning): Use it.
* parser.c (cp_parser_enum_specifier): Use it.
(cp_parser_parameter_declaration_clause): Use it.
(cp_parser_gnu_attributes_opt): Use it.
(cp_parser_std_attribute): Use it.
|
|
This adds the module-specific logic to the various declaration
processing routines in decl.c and semantic.c. I also adjust the rtti
type creation, as those are all in the global module, so we need to
temporarily clear the module_kind, when they are being created.
Finally, I added init and fini module processing with the initialier
giving a fatal error if you try and turn it on (so don't do that yet).
gcc/cp/
* decl.c (duplicate_decls): Add module-specific redeclaration
logic.
(cxx_init_decl_processing): Export the global namespace, maybe
initialize modules.
(start_decl): Reject local-extern in a module, adjust linkage of
template var.
(xref_tag_1): Add module-specific redeclaration logic.
(start_enum): Likewise.
(finish_enum_value_list): Export unscoped members of an exported
enum.
(grokmethod): Implement p1779 linkage of in-class defined
functions.
* decl2.c (no_linkage_error): Imports are ok.
(c_parse_final_cleanups): Call fini_modules.
* lex.c (cxx_dup_lang_specific): Clear some module flags in the
copy.
* module.cc (module_kind): Define.
(module_may_redeclare, set_defining_module): Stubs.
(init_modules): Error on modules.
(fini_modules): Stub.
* rtti.c (push_abi_namespace): Save and reset module_kind.
(pop_abi_namespace): Restore module kind.
(build_dynamic_cast_1, tinfo_base_init): Adjust.
* semantics.c (begin_class_definition): Add module-specific logic.
(expand_or_defer_fn_1): Keep bodies of more fns when modules_p.
|
|
With modules streamed entities have two new properties -- the module
that declares them and the module that instantiates them. Here
'instantiate' applies to more than just templates -- for instance an
implicit member fn. These may well be the same module. This adds the
calls to places that need it.
gcc/cp/
* class.c (layout_class_type): Call set_instantiating_module.
(build_self_reference): Likewise.
* decl.c (grokfndecl): Call set_originating_module.
(grokvardecl): Likewise.
(grokdeclarator): Likewise.
* pt.c (maybe_new_partial_specialization): Call
set_instantiating_module, propagate DECL_MODULE_EXPORT_P.
(lookup_template_class_1): Likewise.
(tsubst_function_decl): Likewise.
(tsubst_decl, instantiate_template_1): Likewise.
(build_template_decl): Propagate module flags.
(tsubst_template_dcl): Likewise.
(finish_concept_definition): Call set_originating_module.
* module.cc (set_instantiating_module, set_originating_module): Stubs.
|
|
In this testcase we are crashing trying to gimplify a switch, because
the types of the switch condition and case constants have different
TYPE_PRECISIONs.
This started with my r5-3726 fix: SWITCH_STMT_TYPE is supposed to be the
original type of the switch condition before any conversions, so in the
C++ FE we need to use unlowered_expr_type to get the unlowered type of
enum bit-fields.
Normally, the switch type is subject to integral promotions, but here
we have a scoped enum type and those don't promote:
enum class B { A };
struct C { B c : 8; };
switch (x.c) // type B
case B::A: // type int, will be converted to B
Here TREE_TYPE is "signed char" but SWITCH_STMT_TYPE is "B". When
gimplifying this in gimplify_switch_expr, the index type is "B" and
we convert all the case values to "B" in preprocess_case_label_vec,
but SWITCH_COND is of type "signed char": gimple_switch_index should
be the (possibly promoted) type, not the original type, so we gimplify
the "x.c" SWITCH_COND to a SSA_NAME of type "signed char". And then
we crash because the precision of the index type doesn't match the
precision of the case value type.
I think it makes sense to do the following; at the end of pop_switch
we've already issued the switch warnings, and since scoped enums don't
promote, it should be okay to use the type of SWITCH_STMT_COND. The
r5-3726 change was about giving warnings for enum bit-fields anyway.
gcc/cp/ChangeLog:
PR c++/98043
* decl.c (pop_switch): If SWITCH_STMT_TYPE is a scoped enum type,
set it to the type of SWITCH_STMT_COND.
gcc/testsuite/ChangeLog:
PR c++/98043
* g++.dg/cpp0x/enum41.C: New test.
|
|
This patch makes a couple of type-creation routines available to
modules. That needs to create unbound template parms, and canonical
template parms.
gcc/cp/
* cp-tree.h (make_unbound_class_template_raw): Declare.
(canonical_type_parameter): Declare.
* decl.c (make_unbound_class_template_raw): Break out of ...
(make_unboud_class_template): ... here. Call it.
* pt.c (canonical_type_parameter): Externalize. Refactor & set
structural_equality for type parms.
|
|
We were saying 'auto parameter not permitted' in a place where 'auto' is in
fact permitted in C++20, but a class template placeholder is not.
gcc/cp/ChangeLog:
* decl.c (grokdeclarator): Improve diagnostic for
disallowed CTAD placeholder.
gcc/testsuite/ChangeLog:
* g++.dg/other/pr88187.C: Adjust expected error.
* g++.dg/cpp2a/class-deduction-abbrev1.C: New test.
|
|
While looking at another issue I noticed that in a template we were failing
to find the INIT_EXPR we were looking for, and so ended up doing redundant
processing. No testcase, as the redundant processing ended up getting the
right result.
gcc/cp/ChangeLog:
* decl.c (check_initializer): Also look through STMT_EXPR
and BIND_EXPR.
|
|
This adds the vector necessary to hold different module's namespace
bindings. We add a new tree-node 'tree_binding_vec', which contains a
sparse array, indexed by module number. To avoid space wasting, this
is allocated in clusters using 'unsigned short' as the index value (so
that's one of the upper bounds on module importing). If there are
only bindings from the current TU, there is no vector, so we have the
same representation as a non-module compilation.
To support lazy loading, a binding slot can contain either a tree (the
binding), or a cookie that the module machinery uses to load the
required binding on demand.
The first 2 or 3 slots end up being reserved for fixed meanings.
There are a couple of flags we have to record on a binding, to know
whether the same declaration could appear in two different slots.
gcc/cp/
* cp-tree.def (BINDING_VECTOR): New.
* name-lookup.h (struct binding_slot): New.
(BINDING_VECTOR_SLOTS_PER_CLUSTER): New.
(struct binding_index, struct binding_cluster): New.
(BINDING_VECTOR_ALLOC_CLUSTERS, BINDING_VECTOR_CLUSTER_BASE)
(BINDING_VECTOR_CLUSTER): New.
(struct tree_binding_vec): New.
(BINDING_VECTOR_NAME, BINDING_VECTOR_GLOBAL_DUPS_P)
(BINDING_VECTOR_PARTITION_DUPS_P): New.
(BINDING_BINDING_GLOBAL_P, BINDING_BINDING_PARTITION_P): New.
(BINDING_VECTOR_PENDING_SPECIALIZATIONS)
(BINDING_VECTOR_PENDING_IS_HEADER_P)
(BINDING_VECTOR_PENDING_IS_PARTITION_P): New.
* cp-tree.h (enum cp_tree_node_structure_enum): Add
TS_CP_BINDING_VECTOR.
(union lang_tree_node): Add binding_vec field.
(make_binding_vec): Declare.
(named_decl_hash::hash, named_decl_hash::equal): Check for binding
vector.
* decl.c (cp_tree_node_structure): Add BINDING_VECTOR case.
* ptree.c (cxx_print_xnode): Add BINDING_VECTOR case.
* tree.c (make_binding_vec): New.
|
|
Attribute handlers may want to examine DECL_INITIAL for a decl, to
validate the attribute being applied. For C++, DECL_INITIAL is currently
not set until cp_finish_decl, by which time attribute validation has
already been performed.
For msp430-elf this causes the "persistent" attribute to always be
rejected for C++, since DECL_INITIAL must be non-null for the
attribute to be applied to a decl.
This patch ensures DECL_INITIAL is set for initialized decls early in
start_decl, before attribute handlers run. This allows the
initialization status of the decl to be examined by the handlers.
DECL_INITIAL must be restored to it's initial value after attribute
validation is performed, so as to not interfere with later decl
processing.
gcc/cp/ChangeLog:
* decl.c (start_decl): Set DECL_INITIAL for initialized decls
before attribute processing.
gcc/testsuite/ChangeLog:
* gcc.target/msp430/data-attributes-2.c: Adjust test.
* g++.target/msp430/data-attributes.C: New test.
* g++.target/msp430/msp430.exp: New test.
|
|
This patch exposes the constexpr hash table so that the modules
machinery can save and load constexpr bodies. While there I noticed
that we could do a little constification of the hasher and comparator
functions. Also combine the saving machinery to a single function
returning void -- nothing ever looked at its return value.
gcc/cp/
* cp-tree.h (struct constexpr_fundef): Moved from constexpr.c.
(maybe_save_constexpr_fundef): Declare.
(register_constexpr_fundef): Take constexpr_fundef object, return
void.
* decl.c (mabe_save_function_definition): Delete, functionality
moved to maybe_save_constexpr_fundef.
(emit_coro_helper, finish_function): Adjust.
* constexpr.c (struct constexpr_fundef): Moved to cp-tree.h.
(constexpr_fundef_hasher::equal): Constify.
(constexpr_fundef_hasher::hash): Constify.
(retrieve_constexpr_fundef): Make non-static.
(maybe_save_constexpr_fundef): Break out checking and duplication
from ...
(register_constexpr_fundef): ... here. Just register the constexpr.
|
|
It turns out there are legitimate cases for the new decl to not have
lang-specific.
PR c++/97905
gcc/cp/
* decl.c (duplicate_decls): Relax new assert.
gcc/testsuite/
* g++.dg/lookup/pr97905.C: New.
|
|
We ICED with a duplicated block-scope extern, as duplicate_decls was
dropping the decl_lang_specific of olddecl. Simplys adding
appropriate retrofitting and copying turned out to be insufficient
because you can get a block-scope using decl also matching the extern.
The latter seems a little suspicious and I have asked CWG for advice.
While there robustified the assert about releasing olddecls'
lang-specific -- if it had one, the new decl better have one.
PR c++/97877
gcc/cp/
* decl.c (duplicate_decls): Deal with duplicated DECL_LOCAL_DECL_P
decls. Extend decl_lang_specific checking assert.
gcc/testsuite/
* g++.dg/lookup/pr97877.C: New.
|
|
Abstract checking has been problematic for a while; when I implemented an
earlier issue resolution to do more checking it led to undesirable
instantiations, and so backed some of it out. During the C++20 process we
decided with P0929R2 that we should go the other way, and only check
abstractness when we're actually creating an object, not when merely forming
an array or function type. This means that we can remove the machinery for
checking whether a newly complete class makes some earlier declaration
ill-formed. This change was moved as a DR, so I'm applying it to all
standard levels. This could be reconsidered if it causes problems, but I
don't expect it to.
The change to the libstdc++ result_of test brings the expected behavior in
line with that for incomplete types, but as in PR97841 I think the libstdc++
handling of incomplete types in this and other type_traits is itself wrong,
so I expect these lines and others to change again before long.
gcc/cp/ChangeLog:
* decl.c (cp_finish_decl): Only check abstractness on definition.
(require_complete_types_for_parms): Check abstractness here.
(create_array_type_for_decl): Not here.
(grokdeclarator, grokparms, complete_vars): Not here.
* pt.c (tsubst, tsubst_arg_types, tsubst_function_type): Not here.
* typeck2.c (struct pending_abstract_type): Remove.
(struct abstract_type_hasher): Remove.
(abstract_pending_vars, complete_type_check_abstract): Remove.
(abstract_virtuals_error_sfinae): Handle arrays.
* call.c (conv_is_prvalue): Split out from...
(conv_binds_ref_to_prvalue): ...here.
(implicit_conversion_1): Rename from implicit_conversion.
(implicit_conversion): An abstract prvalue is bad.
(convert_like_internal): Don't complain if expr is already
error_mark_node.
gcc/testsuite/ChangeLog:
* g++.dg/other/abstract1.C: Adjust.
* g++.dg/other/abstract2.C: Adjust.
* g++.dg/other/abstract4.C: Adjust.
* g++.dg/other/abstract5.C: Adjust.
* g++.dg/other/abstract8.C: New test.
* g++.dg/template/sfinae-dr657.C: Adjust.
* g++.old-deja/g++.other/decl3.C: Adjust.
libstdc++-v3/ChangeLog:
* testsuite/20_util/result_of/sfinae_friendly_1.cc: Adjust.
|
|
We're currently neglecting to set the ALIGNOF_EXPR_STD_P flag on an
ALIGNOF_EXPR when its operand is an expression. This leads to us
handling alignof(expr) as if it were written __alignof__(expr), and
returning the preferred alignment instead of the ABI alignment. In the
testcase below, this causes the first and third static_assert to fail on
x86.
gcc/cp/ChangeLog:
PR c++/88115
* cp-tree.h (cxx_sizeof_or_alignof_expr): Add bool parameter.
* decl.c (fold_sizeof_expr): Pass false to
cxx_sizeof_or_alignof_expr.
* parser.c (cp_parser_unary_expression): Pass std_alignof to
cxx_sizeof_or_alignof_expr.
* pt.c (tsubst_copy): Pass false to cxx_sizeof_or_alignof_expr.
(tsubst_copy_and_build): Pass std_alignof to
cxx_sizeof_or_alignof_expr.
* typeck.c (cxx_alignof_expr): Add std_alignof bool parameter
and pass it to cxx_sizeof_or_alignof_type. Set ALIGNOF_EXPR_STD_P
appropriately.
(cxx_sizeof_or_alignof_expr): Add std_alignof bool parameter
and pass it to cxx_alignof_expr. Assert op is either
SIZEOF_EXPR or ALIGNOF_EXPR.
libcc1/ChangeLog:
PR c++/88115
* libcp1plugin.cc (plugin_build_unary_expr): Pass true to
cxx_sizeof_or_alignof_expr.
gcc/testsuite/ChangeLog:
PR c++/88115
* g++.dg/cpp0x/alignof6.C: New test.
|
|
gcc/
* cgraph.h (symtab_node::get_section): Constify.
(symtab_node::set_section): Declare new overload.
* symtab.c (symtab_node::set_section): Define new overload.
(symtab_node::copy_visibility_from): Use new overload of
symtab_node::set_section.
(symtab_node::resolve_alias): Same.
* tree.h (set_decl_section_name): Declare new overload.
* tree.c (set_decl_section_name): Define new overload.
* tree-emutls.c (get_emutls_init_templ_addr): Same.
* cgraphclones.c (cgraph_node::create_virtual_clone): Use new
overload of symtab_node::set_section.
(cgraph_node::create_version_clone_with_body): Same.
* trans-mem.c (ipa_tm_create_version): Same.
gcc/c
* c-decl.c (merge_decls): Use new overload of
set_decl_section_name.
gcc/cp
* decl.c (duplicate_decls): Use new overload of
set_decl_section_name.
* method.c (use_thunk): Same.
* optimize.c (maybe_clone_body): Same.
* coroutines.cc (act_des_fn): Same.
gcc/d
* decl.cc (finish_thunk): Use new overload of
set_decl_section_name
|
|
On the following testcase where the cdtor attributes aren't on the
in-class declaration but on an out-of-class definition, the cdtors
have their clones created from the in-class declaration, and later on
duplicate_decls updates attributes on the abstract cdtors, but nothing
propagates them to the clones.
2020-11-06 Jakub Jelinek <jakub@redhat.com>
PR c++/67453
* decl.c (duplicate_decls): Propagate DECL_ATTRIBUTES and
DECL_PRESERVE_P from olddecl to its clones if any.
* g++.dg/ext/attr-used-2.C: New test.
|
|
In cleaning up C++'s handling of hidden decls, I renamed its
DECL_BUILTIN_P, which checks for loc == BUILTINS_LOCATION to
DECL_UNDECLARED_BUILTIN_P, because the location gets updated, if user
source declares the builtin, and the predicate no longer holds. The
original name was confusing me. (The builtin may still retain builtin
properties in the redeclaration, and other predicates can still detect
that.)
I discovered that tree.h had its own variant 'DECL_IS_BUILTIN', which
behaves in (almost) the same manner. And therefore has the same
mutating behaviour.
This patch deletes the C++ one, and renames tree.h's to
DECL_IS_UNDECLARED_BUILTIN, to emphasize its non-constantness. I
guess _IS_ wins over _P
gcc/
* tree.h (DECL_IS_BUILTIN): Rename to ...
(DECL_IS_UNDECLARED_BUILTIN): ... here. No need to use SOURCE_LOCUS.
* calls.c (maybe_warn_alloc_args_overflow): Adjust for rename.
* cfgexpand.c (pass_expand::execute): Likewise.
* dwarf2out.c (base_type_die, is_naming_typedef_decl): Likewise.
* godump.c (go_decl, go_type_decl): Likewise.
* print-tree.c (print_decl_identifier): Likewise.
* tree-pretty-print.c (dump_generic_node): Likewise.
* tree-ssa-ccp.c (pass_post_ipa_warn::execute): Likewise.
* xcoffout.c (xcoff_assign_fundamental_type_number): Likewise.
gcc/c-family/
* c-ada-spec.c (collect_ada_nodes): Rename
DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN.
(collect_ada_node): Likewise.
(dump_forward_type): Likewise.
* c-common.c (set_underlying_type): Rename
DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN.
(user_facing_original_type, c_common_finalize_early_debug): Likewise.
gcc/c/
* c-decl.c (diagnose_mismatched_decls): Rename
DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN.
(warn_if_shadowing, implicitly_declare, names_builtin_p)
(collect_source_refs): Likewise.
* c-typeck.c (inform_declaration, inform_for_arg)
(convert_for_assignment): Likewise.
gcc/cp/
* cp-tree.h (DECL_UNDECLARED_BUILTIN_P): Delete.
* cp-objcp-common.c (names_bultin_p): Rename
DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN.
* decl.c (decls_match): Likewise. Replace
DECL_UNDECLARED_BUILTIN_P with DECL_IS_UNDECLARED_BUILTIN.
(duplicate_decls): Likewise.
* decl2.c (collect_source_refs): Likewise.
* name-lookup.c (anticipated_builtin_p, print_binding_level)
(do_nonmember_using_decl): Likewise.
* pt.c (builtin_pack_fn_p): Likewise.
* typeck.c (error_args_num): Likewise.
gcc/lto/
* lto-symtab.c (lto_symtab_merge_decls_1): Rename
DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN.
gcc/go/
* go-gcc.cc (Gcc_backend::call_expression): Rename
DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN.
libcc1/
* libcc1plugin.cc (address_rewriter): Rename
DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN.
* libcp1plugin.cc (supplement_binding): Likewise.
|
|
This patch implements the -Wvexing-parse warning to warn about the
sneaky most vexing parse rule in C++: the cases when a declaration
looks like a variable definition, but the C++ language requires it
to be interpreted as a function declaration. This warning is on by
default (like clang++). From the docs:
void f(double a) {
int i(); // extern int i (void);
int n(int(a)); // extern int n (int);
}
Another example:
struct S { S(int); };
void f(double a) {
S x(int(a)); // extern struct S x (int);
S y(int()); // extern struct S y (int (*) (void));
S z(); // extern struct S z (void);
}
You can find more on this in [dcl.ambig.res].
I spent a fair amount of time on fix-it hints so that GCC can recommend
various ways to resolve such an ambiguity. Sometimes that's tricky.
E.g., suggesting default-initialization when the class doesn't have
a default constructor would not be optimal. Suggesting {}-init is also
not trivial because it can use an initializer-list constructor if no
default constructor is available (which ()-init wouldn't do). And of
course, pre-C++11, we shouldn't be recommending {}-init at all.
I also uncovered a bug in cp_parser_declarator, where we were setting
*parenthesized_p to true despite the comment saying the exact opposite.
gcc/c-family/ChangeLog:
PR c++/25814
* c.opt (Wvexing-parse): New option.
gcc/cp/ChangeLog:
PR c++/25814
* cp-tree.h (enum cp_tree_index): Add CPTI_EXPLICIT_VOID_LIST.
(explicit_void_list_node): Define.
(PARENTHESIZED_LIST_P): New macro.
(struct cp_declarator): Add function::parens_loc.
* decl.c (cxx_init_decl_processing): Initialize explicit_void_list_node.
(grokparms): Also break when explicit_void_list_node.
* parser.c (make_call_declarator): New location_t parameter. Use it
to set declarator->u.function.parens_loc.
(cp_parser_lambda_declarator_opt): Pass UNKNOWN_LOCATION to
make_call_declarator.
(warn_about_ambiguous_parse): New function.
(cp_parser_init_declarator): Call warn_about_ambiguous_parse.
(cp_parser_declarator): Set *parenthesized_p to false rather than to
true.
(cp_parser_direct_declarator): Create a location for the function's
parentheses and pass it to make_call_declarator.
(cp_parser_parameter_declaration_clause): Return explicit_void_list_node
for (void).
(cp_parser_parameter_declaration_list): Set PARENTHESIZED_LIST_P
in the parameters tree.
gcc/ChangeLog:
PR c++/25814
* doc/invoke.texi: Document -Wvexing-parse.
gcc/testsuite/ChangeLog:
PR c++/25814
* g++.dg/cpp2a/fn-template16.C: Add a dg-warning.
* g++.dg/cpp2a/fn-template7.C: Likewise.
* g++.dg/lookup/pr80891-5.C: Likewise.
* g++.dg/lto/pr79050_0.C: Add extern.
* g++.dg/lto/pr84805_0.C: Likewise.
* g++.dg/parse/pr58898.C: Add a dg-warning.
* g++.dg/template/scope5.C: Likewise.
* g++.old-deja/g++.brendan/recurse.C: Likewise.
* g++.old-deja/g++.jason/template4.C: Likewise.
* g++.old-deja/g++.law/arm4.C: Likewise.
* g++.old-deja/g++.mike/for2.C: Likewise.
* g++.old-deja/g++.other/local4.C: Likewise.
* g++.old-deja/g++.pt/crash3.C: Likewise.
* g++.dg/warn/Wvexing-parse.C: New test.
* g++.dg/warn/Wvexing-parse2.C: New test.
* g++.dg/warn/Wvexing-parse3.C: New test.
* g++.dg/warn/Wvexing-parse4.C: New test.
* g++.dg/warn/Wvexing-parse5.C: New test.
* g++.dg/warn/Wvexing-parse6.C: New test.
* g++.dg/warn/Wvexing-parse7.C: New test.
libstdc++-v3/ChangeLog:
PR c++/25814
* testsuite/20_util/reference_wrapper/lwg2993.cc: Add a dg-warning.
* testsuite/25_algorithms/generate_n/87982_neg.cc: Likewise.
|
|
duplicate_decls was being lenient about extern-c mismatches, allowing
you to have two declarations in the symbol table after emitting an
error. This resulted in duplicate error messages in modules, when we
find the same problem multiple times. Let's just not let that happen.
gcc/cp/
* decl.c (duplicate_decls): Return error_mark_node fo extern-c
mismatch.
|
|
Move some var decls to their initializers. Correct some whitespace.
gcc/cp/
* decl.c (start_decl_1): Refactor declarations. Fixup some
whitespace.
(lookup_and_check_tag): Fixup some whitespace.
|
|
A couple of paths in duplicate decls dealing with templates and
builtins were overly complicated. Fixing thusly.
gcc/cp/
* decl.c (duplicate_decls): Refactor some template & builtin
handling.
|
|
This patch diagnoses delete [] new int; and delete new int[1]; in constexpr
contexts by remembering
IDENTIFIER_OVL_OP_FLAGS (DECL_NAME (fun)) & OVL_OP_FLAG_VEC
from the operator new and checking it at operator delete time.
2020-10-29 Jakub Jelinek <jakub@redhat.com>
PR c++/95808
* cp-tree.h (enum cp_tree_index): Add CPTI_HEAP_VEC_UNINIT_IDENTIFIER
and CPTI_HEAP_VEC_IDENTIFIER.
(heap_vec_uninit_identifier, heap_vec_identifier): Define.
* decl.c (initialize_predefined_identifiers): Initialize those
identifiers.
* constexpr.c (cxx_eval_call_expression): Reject array allocations
deallocated with non-array deallocation or non-array allocations
deallocated with array deallocation.
(non_const_var_error): Handle heap_vec_uninit_identifier and
heap_vec_identifier too.
(cxx_eval_constant_expression): Handle also heap_vec_uninit_identifier
and in that case during initialization replace it with
heap_vec_identifier.
(find_heap_var_refs): Handle heap_vec_uninit_identifier and
heap_vec_identifier too.
* g++.dg/cpp2a/constexpr-new15.C: New test.
|
|
I noticed that declarator->parenthesized is, for this warning, only set
to the opening paren. But we can easily make it a range and generate
a nicer diagnostic. Moreover, we can then offer a fix-it hint.
TL;DR: This patch changes
mvp3.C:8:7: warning: unnecessary parentheses in declaration of ‘i’ [-Wparentheses]
8 | int (i);
| ^
to
mvp3.C:8:7: warning: unnecessary parentheses in declaration of ‘i’ [-Wparentheses]
8 | int (i);
| ^~~
mvp3.C:8:7: note: remove parentheses
8 | int (i);
| ^~~
| - -
Tested by using -fdiagnostics-generate-patch and verifying that the
generated patch DTRT.
gcc/cp/ChangeLog:
* decl.c (grokdeclarator): Offer a fix-it hint for the "unnecessary
parentheses in declaration" warning.
* parser.c (cp_parser_direct_declarator): When setting
declarator->parenthesized, use a location range.
gcc/testsuite/ChangeLog:
* g++.dg/warn/mvp3.C: New test.
|
|
This makes duplicate_decls differentiate a TYPE_DECL for an alias
template from a TYPE_DECL for one of its template parameters. The
recently added assert in template_parm_to_arg revealed this latent issue
because merging of the two TYPE_DECLs cleared the DECL_TEMPLATE_PARM_P
flag.
With this patch, we now also correctly diagnose the name shadowing in
the below testcase (as required by [temp.local]/6).
gcc/cp/ChangeLog:
PR c++/97511
* decl.c (duplicate_decls): Return NULL_TREE if
DECL_TEMPLATE_PARM_P differ.
gcc/testsuite/ChangeLog:
PR c++/97511
* g++.dg/template/shadow3.C: New test.
|
|
Trying to diagnose the problem with an implicit copy function breaks if the
function isn't actually a copy function.
gcc/cp/ChangeLog:
PR c++/95844
* decl.c (copy_fn_p): Return false for a function that is neither a
constructor nor an assignment operator.
(move_signature_fn_p): Likewise.
gcc/testsuite/ChangeLog:
PR c++/95844
* g++.dg/cpp2a/spaceship-eq10.C: New test.
|
|
DECL_FRIEND_P's meaning has changed over time. It now (almost) means
the the friend function decl has not been met via an explicit decl.
This completes that transition, renaming it to DECL_UNIQUE_FRIEND_P,
so one doesn't think it is the sole indicator of friendliness (plenty
of friends do not have the flag set). This allows reduction in the
complexity of managing the field -- all in duplicate_decls now.
gcc/cp/
* cp-tree.h (struct lang_decl_fn): Adjust context comment.
(DECL_FRIEND_P): Replace with ...
(DECL_UNIQUE_FRIEND_P): ... this. Only for FUNCTION_DECLs.
(DECL_FRIEND_CONTEXT): Adjust.
* class.c (add_implicitly_declared_members): Detect friendly
spaceship from context.
* constraint.cc (remove_constraints): Use a checking assert.
(maybe_substitute_reqs_for): Use DECL_UNIQUE_FRIEND_P.
* decl.c (check_no_redeclaration_friend_default_args):
DECL_UNIQUE_FRIEND_P is signficant, not hiddenness.
(duplicate_decls): Adjust DECL_UNIQUE_FRIEND_P clearing.
(redeclaration_error_message): Use DECL_UNIQUE_FRIEND_P.
(start_preparsed_function): Correct in-class friend processing.
Refactor some initializers.
(grokmethod): Directly check friend decl-spec.
* decl2.c (grokfield): Check DECL_UNIQUE_FRIEND_P.
* friend.c (do_friend): Set DECL_UNIQUE_FRIEND_P first, remove
extraneous conditions. Don't re set it afterwards.
* name-lookup.c (lookup_elaborated_type_1): Simplify revealing
code.
(do_pushtag): Likewise.
* pt.c (optimize_specialization_lookup_p): Check
DECL_UNIQUE_FRIEND_P.
(push_template_decl): Likewise. Drop unneeded friend setting.
(type_dependent_expression_p): Check DECL_UNIQUE_FRIEND_P.
libcc1/
* libcp1plugin.cc (plugin_add_friend): Set DECL_UNIQUE_FRIEND_P.
|
|
This patch improves block-scope extern handling by always injecting a
hidden copy into the enclosing namespace (or using a match already
there). This hidden copy will be revealed if the user explicitly
declares it later. We can get from the DECL_LOCAL_DECL_P local extern
to the alias via DECL_LOCAL_DECL_ALIAS. This fixes several bugs and
removes the kludgy per-function extern_decl_map. We only do this
pushing for non-dependent local externs -- dependent ones will be
pushed during instantiation.
User code that expected to be able to handle incompatible local
externs in different block-scopes will no longer work. That code is
ill-formed. (always was, despite what 31775 claimed). I had to
adjust a number of testcases that fell into this.
I tried using DECL_VALUE_EXPR, but that didn't work out. Due to
constexpr requirements we have to do the replacement very late (it
happens in the gimplifier). Consider:
extern int l[]; // #1
constexpr bool foo ()
{
extern int l[3]; // this does not complete the type of decl #1
constexpr int *p = &l[2]; // ok
return !p;
}
This requirement, coupled with our use of the common folding machinery
makes pr97306 hard to fix, as we end up with an expression containing
the two different decls for 'l', and only the c++ FE knows how to
reconcile those. I punted on this.
gcc/cp/
* cp-tree.h (struct language_function): Delete extern_decl_map.
(DECL_LOCAL_DECL_ALIAS): New.
* name-lookup.h (is_local_extern): Delete.
* name-lookup.c (set_local_extern_decl_linkage): Replace with ...
(push_local_extern_decl): ... this new function.
(do_pushdecl): Call new function after pushing new decl. Unhide
hidden non-functions.
(is_local_extern): Delete.
* decl.c (layout_var_decl): Do not allow VLA local externs.
* decl2.c (mark_used): Also mark DECL_LOCAL_DECL_ALIAS. Drop old
local-extern treatment.
* parser.c (cp_parser_oacc_declare): Deal with local extern aliases.
* pt.c (tsubst_expr): Adjust local extern instantiation.
* cp-gimplify.c (cp_genericize_r): Remap DECL_LOCAL_DECLs.
gcc/testsuite/
* g++.dg/cpp0x/lambda/lambda-sfinae1.C: Avoid ill-formed local extern
* g++.dg/init/pr42844.C: Add expected error.
* g++.dg/lookup/extern-redecl1.C: Likewise.
* g++.dg/lookup/koenig15.C: Avoid ill-formed.
* g++.dg/lto/pr95677.C: New.
* g++.dg/other/nested-extern-1.C: Correct expected behabviour.
* g++.dg/other/nested-extern-2.C: Likewise.
* g++.dg/other/nested-extern.cc: Split ...
* g++.dg/other/nested-extern-1.cc: ... here ...
* g++.dg/other/nested-extern-2.cc: ... here.
* g++.dg/template/scope5.C: Avoid ill-formed
* g++.old-deja/g++.law/missed-error2.C: Allow extension.
* g++.old-deja/g++.pt/crash3.C: Add expected error.
|
|
I realized I'd misnamed DECL_BUILTIN_P, it's only true of compiler
builtins unless and until the user declares them -- at that point
they're real decls, and will have a location in the user's source.
(BUILT_IN_FN and friends still work though). This renames them so
future-me is not confused as to why the predicate becomes false.
gcc/cp/
* cp-tree.h (DECL_BUILTIN_P): Rename to ...
(DECL_UNDECLARED_BUILTIN_P): ... here.
* decl.c (duplicate_decls): Adjust.
* name-lookup.c (anticipated_builtin_p): Adjust.
(do_nonmember_using_decl): Likewise.
libcc1/
* libcp1plugin.cc (supplement_binding): Rename
DECL_BUILTIN_P.
|
|
Here's the patch to remove DECL_ANTICIPATED, and with it hiddenness is
managed entirely in the symbol table. Sadly I couldn't get rid of the
actual field without more investigation -- it's repurposed for
OMP_PRIVATIZED_MEMBER. It looks like a the VAR-related flags in
lang_decl_base are not completely orthogonal, so perhaps some can be
turned into an enumeration or something. But that's more than I want
to do right now.
DECL_FRIEND_P Is still slightly suspect as it appears to mean more
than just in-class definition. However, I'm leaving that for now.
gcc/cp/
* cp-tree.h (lang_decl_base): anticipated_p is not used for
anticipatedness.
(DECL_ANTICIPATED): Delete.
* decl.c (duplicate_decls): Delete DECL_ANTICIPATED_management,
use was_hidden.
(cxx_builtin_function): Drop DECL_ANTICIPATED setting.
(xref_tag_1): Drop DECL_ANTICIPATED assert.
* name-lookup.c (name_lookup::adl_class_only): Drop
DECL_ANTICIPATED check.
(name_lookup::search_adl): Always dedup.
(anticipated_builtin_p): Reimplement.
(do_pushdecl): Drop DECL_ANTICIPATED asserts & update.
(lookup_elaborated_type_1): Drop DECL_ANTICIPATED update.
(do_pushtag): Drop DECL_ANTICIPATED setting.
* pt.c (push_template_decl): Likewise.
(tsubst_friend_class): Likewise.
libcc1/
* libcp1plugin.cc (libcp1plugin.cc): Drop DECL_ANTICIPATED test.
|
|
I had reason to wander into cp_make_fname, and noticed it's the only
caller of cp_fname_init. Folding it in makes the code simpler.
gcc/cp/
* cp-tree.h (cp_fname_init): Delete declaration.
* decl.c (cp_fname_init): Merge into only caller ...
(cp_make_fname): ... here & refactor.
|
|
It turns out I'd already found lookup_and_check_tag's control flow
confusing, and had refactored it on the modules branch. For instance,
it continually checks 'if (decl &&$ condition)' before finally getting
to 'else if (!decl)'. why not just check !decl first and be done?
Well, it is done thusly.
gcc/cp/
* decl.c (lookup_and_check_tag): Refactor.
|
|
Now hiddenness is managed by name-lookup, we no longer need DECL_HIDDEN_FRIEND_P.
This removes it. Mainly by deleting its bookkeeping, but there are a couple of uses
1) two name lookups look at it to see if they found a hidden thing.
In one we have the OVERLOAD, so can record OVL_HIDDEN_P. In the other
we're repeating a lookup that failed, but asking for hidden things --
so if that succeeds we know the thing was hidden. (FWIW CWG recently
discussed whether template specializations and instantiations should
see such hidden templates anyway, there is compiler divergence.)
2) We had a confusing setting of KOENIG_P when building a
non-dependent call. We don't repeat that lookup at instantiation time
anyway.
gcc/cp/
* cp-tree.h (struct lang_decl_fn): Remove hidden_friend_p.
(DECL_HIDDEN_FRIEND_P): Delete.
* call.c (add_function_candidate): Drop assert about anticipated
decl.
(build_new_op_1): Drop koenig lookup flagging for hidden friend.
* decl.c (duplicate_decls): Drop HIDDEN_FRIEND_P updating.
* name-lookup.c (do_pushdecl): Likewise.
(set_decl_namespace): Discover hiddenness from OVL_HIDDEN_P.
* pt.c (check_explicit_specialization): Record found_hidden
explicitly.
|
|
This patch moves the handling of decl-hiddenness entirely into the
name lookup machinery, where it belongs. We need a few new flags,
because pressing the existing OVL_HIDDEN_P into play for non-function
decls doesn't work well. For a local binding we only need one marker,
as there cannot be both a hidden implicit typedef and a hidden
function. That's not true for namespace-scope, where they could both
be hidden.
The name-lookup machinery maintains the existing decl_hidden and co
flags, and asserts have been sprinkled around to make sure they are
consistent. The next series of patches will remove those old markers.
(we'll need to keep one, as there are some special restrictions on
redeclaring friend functions with in-class definitions or default args.)
gcc/cp/
* cp-tree.h (ovl_insert): Change final parm to hidden-or-using
indicator.
* name-lookup.h (HIDDEN_TYPE_BINDING_P): New.
(struct cxx_binding): Add type_is_hidden flag.
* tree.c (ovl_insert): Change using_p parm to using_or_hidden,
adjust.
(ovl_skip_hidden): Assert we never see a naked hidden decl.
* decl.c (xref_tag_1): Delete unhiding friend from here (moved to
lookup_elaborated_type_1).
* name-lookup.c (STAT_TYPE_HIDDEN_P, STAT_DECL_HIDDEN_P): New.
(name_lookup::search_namespace_only): Check new hidden markers.
(cxx_binding_make): Clear HIDDEN_TYPE_BINDING_P.
(update_binding): Update new hidden markers.
(lookup_name_1): Check HIDDEN_TYPE_BINDING_P and simplify friend
ignoring.
(lookup_elaborated_type_1): Use new hidden markers. Reveal the
decl here.
|
|
The decl pushing APIs and duplicate_decls take an 'is_friend' parm,
when what they actually mean is 'hide this from name lookup'. That
conflation has gotten more anachronistic as time moved on. We now
have anticipated builtins, and I plan to have injected extern decls
soon. So this patch is mainly a renaming excercise. is_friend ->
hiding. duplicate_decls gets an additional 'was_hidden' parm. As
I've already said, hiddenness is a property of the symbol table, not
the decl. Builtins are now pushed requesting hiding, and pushdecl
asserts that we don't attempt to push a thing that should be hidden
without asking for it to be hidden.
This is the final piece of groundwork to get rid of a bunch of 'this
is hidden' markers on decls and move the hiding management entirely
into name lookup.
gcc/cp/
* cp-tree.h (duplicate_decls): Replace 'is_friend' with 'hiding'
and add 'was_hidden'.
* name-lookup.h (pushdecl_namespace_level): Replace 'is_friend'
with 'hiding'.
(pushdecl): Likewise.
(pushdecl_top_level): Drop is_friend parm.
* decl.c (check_no_redeclaration_friend_default_args): Rename parm
olddelc_hidden_p.
(duplicate_decls): Replace 'is_friend' with 'hiding'
and 'was_hidden'. Do minimal adjustments in body.
(cxx_builtin_function): Pass 'hiding' to pushdecl.
* friend.c (do_friend): Pass 'hiding' to pushdecl.
* name-lookup.c (supplement_binding_1): Drop defaulted arg to
duplicate_decls.
(update_binding): Replace 'is_friend' with 'hiding'. Drop
defaulted arg to duplicate_decls.
(do_pushdecl): Replace 'is_friend' with 'hiding'. Assert no
surprise hidhing. Adjust duplicate_decls calls to inform of old
decl's hiddennes.
(pushdecl): Replace 'is_friend' with 'hiding'.
(set_identifier_type_value_with_scope): Adjust update_binding
call.
(do_pushdecl_with_scope): Replace 'is_friend' with 'hiding'.
(pushdecl_outermost_localscope): Drop default arg to
do_pushdecl_with_scope.
(pushdecl_namespace_level): Replace 'is_friend' with 'hiding'.
(pushdecl_top_level): Drop is_friend parm.
* pt.c (register_specialization): Comment duplicate_decls call
args.
(push_template_decl): Commont pushdecl_namespace_level.
(tsubst_friend_function, tsubst_friend_class): Likewise.
|
|
I always found tag_scope confusing, as it is not a scope, but a
direction of how to lookup or insert an elaborated type tag. This
replaces it with a enum class TAG_how. I also add a new value,
HIDDEN_FRIEND, to distinguish the two cases of innermost-non-class
insertion that we currently conflate. Also renamed
'lookup_type_scope' to 'lookup_elaborated_type', because again, we're
not providing a scope to lookup in.
gcc/cp/
* name-lookup.h (enum tag_scope): Replace with ...
(enum class TAG_how): ... this. Add HIDDEN_FRIEND value.
(lookup_type_scope): Replace with ...
(lookup_elaborated_type): ... this.
(pushtag): Use TAG_how, not tag_scope.
* cp-tree.h (xref_tag): Parameter is TAG_how, not tag_scope.
* decl.c (lookup_and_check_tag): Likewise. Adjust.
(xref_tag_1, xref_tag): Likewise. adjust.
(start_enum): Adjust lookup_and_check_tag call.
* name-lookup.c (lookup_type_scope_1): Rename to ...
(lookup_elaborated_type_1) ... here. Use TAG_how, not tag_scope.
(lookup_type_scope): Rename to ...
(lookup_elaborated_type): ... here. Use TAG_how, not tag_scope.
(do_pushtag): Use TAG_how, not tag_scope. Adjust.
(pushtag): Likewise.
* parser.c (cp_parser_elaborated_type_specifier): Adjust.
(cp_parser_class_head): Likewise.
gcc/objcp/
* objcp-decl.c (objcp_start_struct): Use TAG_how not tag_scope.
(objcp_xref_tag): Likewise.
|
|
We currently detect builtin decls via DECL_ARTIFICIAL &&
!DECL_HIDDEN_FUNCTION_P, which, besides being clunky, is a problem as
hiddenness is a property of the symbol table -- not the decl being
hidden. This adds DECL_BUILTIN_P, which just looks at the
SOURCE_LOCATION -- we have a magic one for builtins.
One of the consequential changes is to make function-scope omp udrs
have function context (needed because otherwise duplicate-decls thinks
the types don't match at the point we check). This is also morally
better, because that's what they are -- nested functions, stop lying.
(That's actually my plan for all DECL_LOCAL_DECL_P decls, as they are
distinct decls to the namespace-scope decl they alias.)
gcc/cp/
* cp-tree.h (DECL_BUILTIN_P): New.
* decl.c (duplicate_decls): Use it. Do not treat omp-udr as a
builtin.
* name-lookup.c (anticipated_builtin): Use it.
(set_decl_context_in_fn): Function-scope OMP UDRs have function context.
(do_nonmember_using_decl): Use DECL_BUILTIN_P.
* parser.c (cp_parser_omp_declare_reduction): Function-scope OMP
UDRs have function context. Assert we never find a valid duplicate.
* pt.c (tsubst_expr): Function-scope OMP UDRs have function context.
libcc1/
* libcp1plugin.cc (supplement_binding): Use DECL_BULTIN_P.
|
|
In cleaning up local decl handling, here's an initial patch that takes
advantage of C++'s default args for the is_friend parm of pushdecl,
duplicate_decls and push_template_decl_real and the scope & tpl_header
parms of xref_tag. Then many of the calls simply not mention these.
I also rename push_template_decl_real to push_template_decl, deleting
the original forwarding function. This'll make my later patches
changing their types less intrusive. There are 2 functional changes:
1) push_template_decl requires is_friend to be correct, it doesn't go
checking for a friend function (an assert is added).
2) debug_overload prints out Hidden and Using markers for the overload set.
gcc/cp/
* cp-tree.h (duplicate_decls): Default is_friend to false.
(xref_tag): Default tag_scope & tpl_header_p to ts_current & false.
(push_template_decl_real): Default is_friend to false. Rename to
...
(push_template_decl): ... here. Delete original decl.
* name-lookup.h (pushdecl_namespace_level): Default is_friend to
false.
(pushtag): Default tag_scope to ts_current.
* coroutines.cc (morph_fn_to_coro): Drop default args to xref_tag.
* decl.c (start_decl): Drop default args to duplicate_decls.
(start_enum): Drop default arg to pushtag & xref_tag.
(start_preparsed_function): Pass DECL_FRIEND_P to
push_template_decl.
(grokmethod): Likewise.
* friend.c (do_friend): Rename push_template_decl_real calls.
* lambda.c (begin_lamnbda_type): Drop default args to xref_tag.
(vla_capture_type): Likewise.
* name-lookup.c (maybe_process_template_type_declaration): Rename
push_template_decl_real call.
(pushdecl_top_level_and_finish): Drop default arg to
pushdecl_namespace_level.
* pt.c (push_template_decl_real): Assert no surprising friend
functions. Rename to ...
(push_template_decl): ... here. Delete original function.
(lookup_template_class_1): Drop default args from pushtag.
(instantiate_class_template_1): Likewise.
* ptree.c (debug_overload): Print hidden and using markers.
* rtti.c (init_rtti_processing): Drop refault args from xref_tag.
(build_dynamic_cast_1, tinfo_base_init): Likewise.
* semantics.c (begin_class_definition): Drop default args to
pushtag.
gcc/objcp/
* objcp-decl.c (objcp_start_struct): Drop default args to
xref_tag.
(objcp_xref_tag): Likewise.
libcc1/
* libcp1plugin.cc (supplement_binding): Drop default args to
duplicate_decls.
(safe_pushtag): Drop scope parm. Drop default args to pushtag.
(safe_pushdecl_maybe_friend): Rename to ...
(safe_pushdecl): ... here. Drop is_friend parm. Drop default args
to pushdecl.
(plugin_build_decl): Adjust safe_pushdecl & safe_pushtag calls.
(plugin_build_constant): Adjust safe_pushdecl call.
|
|
The remaining use of xref_tag_from_type was also suspicious. It turns
out to be an error path. At parse time we diagnose that a class
definition cannot appear, but we swallow the definition. This code
was attempting to push it into the global scope (or find a conflict).
This seems needless, just return error_mark_node. This was the
simpler fix than going through the parser and figuring out how to get
it to put in error_mark_node at the right point.
gcc/cp/
* cp-tree.h (xref_tag_from_type): Don't declare.
* decl.c (xref_tag_from_type): Delete.
* pt.c (lookup_template_class_1): Erroneously located class
definitions just give error_mark, don't try and inject it into the
namespace.
|
|
We don't need ts_lambda, as IDENTIFIER_LAMBDA_P is sufficient. Killed thusly.
gcc/cp/
* decl.c (xref_tag_1): Use IDENTIFIER_LAMBDA_P to detect lambdas.
* lambda.c (begin_lambda_type): Use ts_current to push the tag.
* name-lookup.h (enum tag_scope): Drop ts_lambda.
|
|
[temp.deduct.guide]p3: Two deduction guide declarations in the same
translation unit for the same class template shall not have equivalent
parameter-declaration-clauses.
So let's detect that.
gcc/cp/ChangeLog:
PR c++/97099
* decl.c (redeclaration_error_message): Detect a redeclaration of
deduction guides.
gcc/testsuite/ChangeLog:
PR c++/97099
* g++.dg/cpp1z/class-deduction74.C: New test.
|
|
gcc/cp/ChangeLog:
PR bootstrap/97118
* decl.c (complete_vars): Only call layout_var_decl if completing
the type succeeded.
|
|
Martin's -Wplacement-new patch ran into a problem with DECL_SIZE not being
set on an extern variable for which the type was not complete until after
its declaration. complete_vars was deliberately not calling layout_decl for
some reason, instead leaving that for expand_expr_real_1 much later in the
compilation. But if we layout decls at declaration time, I don't see any
reason we shouldn't lay them out here, when their type is newly complete.
gcc/cp/ChangeLog:
* decl.c (complete_vars): Call layout_var_decl.
|
|
I discovered that we'd accept constraints on block-scope function
decls inside templates. This fixes that.
gcc/cp/
* decl.c (grokfndecl): Don't attach to local extern.
|
|
Since we now have DECL_DECLARED_CONSTINIT_P, we no longer need
LOOKUP_CONSTINIT.
gcc/cp/ChangeLog:
* cp-tree.h (LOOKUP_CONSTINIT): Remove.
(LOOKUP_REWRITTEN): Adjust.
* decl.c (duplicate_decls): Set DECL_DECLARED_CONSTINIT_P.
(check_initializer): Use DECL_DECLARED_CONSTINIT_P instead of
LOOKUP_CONSTINIT.
(cp_finish_decl): Don't set DECL_DECLARED_CONSTINIT_P. Use
DECL_DECLARED_CONSTINIT_P instead of LOOKUP_CONSTINIT.
(grokdeclarator): Set DECL_DECLARED_CONSTINIT_P.
* decl2.c (grokfield): Don't handle LOOKUP_CONSTINIT.
* parser.c (cp_parser_decomposition_declaration): Remove
LOOKUP_CONSTINIT handling.
(cp_parser_init_declarator): Likewise.
* pt.c (tsubst_expr): Likewise.
(instantiate_decl): Likewise.
* typeck2.c (store_init_value): Use DECL_DECLARED_CONSTINIT_P instead
of LOOKUP_CONSTINIT.
|
|
We need to record whether template function-scopestatic decls are
constinit. That's currently held on the var's TEMPLATE_INFO data.
But I want to get rid of such decl's template header as they're not
really templates, and they're never instantiated separately from their
containing function's definition. (Just like auto vars, which don't
get them for instance).
This patch moves the flag into a spare decl_lang_flag.
gcc/cp/
* cp-tree.h (TINFO_VAR_DECLARED_CONSTINIT): Replace with ...
(DECL_DECLARED_CONSTINIT_P): ... this.
* decl.c (start_decl): No need to retrofit_lang_decl for constinit
flag.
(cp_finish_decl): Use DECL_DECLARED_CONSTINIT_P.
* pt.c (tsubst_decl): No need to handle constinit flag
propagation.
(tsubst_expr): Or here.
|
|
Our handling of block-scope extern decls is insufficient for modern
C++, in particular modules, (but also constexprs). We mark such local
function decls, and this patch extends that to marking local var decls
too, so mainly a macro rename. Also, we set this flag earlier, rather
than learning about it when pushing the decl. This is a step towards
handling these properly.
gcc/cp/
* cp-tree.h (DECL_LOCAL_FUNCTION_P): Rename to ...
(DECL_LOCAL_DECL_P): ... here. Accept both fns and vars.
* decl.c (start_decl): Set DECL_LOCAL_DECL_P for local externs.
(omp_declare_variant_finalize_one): Use DECL_LOCAL_DECL_P.
(local_variable_p): Simplify.
* name-lookup.c (set_decl_context_in_fn): Assert DECL_LOCAL_DECL_P
is as expected. Simplify.
(do_pushdecl): Don't set decl_context_in_fn for friends.
(is_local_extern): Simplify.
* call.c (equal_functions): Use DECL_LOCAL_DECL_P.
* parser.c (cp_parser_postfix_expression): Likewise.
(cp_parser_omp_declare_reduction): Likewise.
* pt.c (check_default_tmpl_args): Likewise.
(tsubst_expr): Assert nested reduction function is local.
(type_dependent_expression_p): Use DECL_LOCAL_DECL_P.
* semantics.c (finish_call_expr): Likewise.
libcc1/
* libcp1plugin.cc (plugin_build_call_expr): Use DECL_LOCAL_DECL_P.
|
|
This patch corrects our handling of array new-expression with ()-init:
new int[4](1, 2, 3, 4);
should work even with the explicit array bound, and
new char[3]("so_sad");
should cause an error, but we weren't giving any.
Fixed by handling array new-expressions with ()-init in the same spot
where we deduce the array bound in array new-expression. I'm now
always passing STRING_CSTs to build_new_1 wrapped in { } which allowed
me to remove the special handling of STRING_CSTs in build_new_1. And
since the DIRECT_LIST_INIT_P block in build_new_1 calls digest_init, we
report errors about too short arrays. reshape_init now does the {"foo"}
-> "foo" transformation even for CONSTRUCTOR_IS_PAREN_INIT, so no need
to do it in build_new.
I took a stab at cp_complete_array_type's "FIXME: this code is duplicated
from reshape_init", but calling reshape_init there, I ran into issues
with has_designator_problem: when we reshape an already reshaped
CONSTRUCTOR again, d.cur.index has been filled, so we think that we
have a user-provided designator (though there was no designator in the
source code), and report an error.
gcc/cp/ChangeLog:
PR c++/77841
* decl.c (reshape_init): If we're initializing a char array from
a string-literal that is enclosed in braces, unwrap it.
* init.c (build_new_1): Don't handle string-initializers here.
(build_new): Handle new-expression with paren-init when the
array bound is known. Always pass string constants to build_new_1
enclosed in braces. Don't handle string-initializers in any
special way.
gcc/testsuite/ChangeLog:
PR c++/77841
* g++.old-deja/g++.ext/arrnew2.C: Expect the error only in C++17
and less.
* g++.old-deja/g++.robertl/eb58.C: Adjust dg-error.
* g++.old-deja/g++.robertl/eb63.C: Expect the error only in C++17
and less.
* g++.dg/cpp2a/new-array5.C: New test.
* g++.dg/cpp2a/paren-init36.C: New test.
* g++.dg/cpp2a/paren-init37.C: New test.
* g++.dg/pr84729.C: Adjust dg-error.
|
|
This patch fixes a long-standing bug in reshape_init_r. Since r209314
we implement DR 1467 which handles list-initialization with a single
initializer of the same type as the target. In this test this causes
a crash in reshape_init_r when we're processing a constructor that has
undergone the DR 1467 transformation.
Take e.g. the
foo({{1, {H{k}}}});
line in the attached test. {H{k}} initializes the field b of H in I.
H{k} is a functional cast, so has TREE_HAS_CONSTRUCTOR set, so is
COMPOUND_LITERAL_P. We perform the DR 1467 transformation and turn
{H{k}} into H{k}. Then we attempt to reshape H{k} again and since
first_initializer_p is null and it's COMPOUND_LITERAL_P, we go here:
else if (COMPOUND_LITERAL_P (stripped_init))
gcc_assert (!BRACE_ENCLOSED_INITIALIZER_P (stripped_init));
then complain about the missing braces, go to reshape_init_class and ICE
on
gcc_checking_assert (d->cur->index
== get_class_binding (type, id));
because due to the missing { } we're looking for 'b' in H, but that's
not found.
So we have to be prepared to handle an initializer whose outer braces
have been removed due to DR 1467.
gcc/cp/ChangeLog:
PR c++/95164
* decl.c (reshape_init_r): When initializing an aggregate member
with an initializer from an initializer-list, also consider
COMPOUND_LITERAL_P.
gcc/testsuite/ChangeLog:
PR c++/95164
* g++.dg/cpp0x/initlist123.C: New test.
|
|
This patch nails down the remaining P0960 case in PR92812:
struct A {
int ar[2];
A(): ar(1, 2) {} // doesn't work without this patch
};
Note that when the target object is not of array type, this already
works:
struct S { int x, y; };
struct A {
S s;
A(): s(1, 2) { } // OK in C++20
};
because build_new_method_call_1 takes care of the P0960 magic.
It proved to be quite hairy. When the ()-list has more than one
element, we can always create a CONSTRUCTOR, because the code was
previously invalid. But when the ()-list has just one element, it
gets all kinds of difficult. As usual, we have to handle a("foo")
so as not to wrap the STRING_CST in a CONSTRUCTOR. Always turning
x(e) into x{e} would run into trouble as in c++/93790. Another
issue was what to do about x({e}): previously, this would trigger
"list-initializer for non-class type must not be parenthesized".
I figured I'd make this work in C++20, so that given
struct S { int x, y; };
you can do
S a[2];
[...]
A(): a({1, 2}) // initialize a[0] with {1, 2} and a[1] with {}
It also turned out that, as an extension, we support compound literals:
F (): m((S[1]) { 1, 2 })
so this has to keep working as before. Moreover, make sure not to trigger
in compiler-generated code, like =default, where array assignment is allowed.
I've factored out a function that turns a TREE_LIST into a CONSTRUCTOR
to simplify handling of P0960.
paren-init35.C also tests this with vector types.
gcc/cp/ChangeLog:
PR c++/92812
* cp-tree.h (do_aggregate_paren_init): Declare.
* decl.c (do_aggregate_paren_init): New.
(grok_reference_init): Use it.
(check_initializer): Likewise.
* init.c (perform_member_init): Handle initializing an array from
a ()-list. Use do_aggregate_paren_init.
gcc/testsuite/ChangeLog:
PR c++/92812
* g++.dg/cpp0x/constexpr-array23.C: Adjust dg-error.
* g++.dg/cpp0x/initlist69.C: Likewise.
* g++.dg/diagnostic/mem-init1.C: Likewise.
* g++.dg/init/array28.C: Likewise.
* g++.dg/cpp2a/paren-init33.C: New test.
* g++.dg/cpp2a/paren-init34.C: New test.
* g++.dg/cpp2a/paren-init35.C: New test.
* g++.old-deja/g++.brendan/crash60.C: Adjust dg-error.
* g++.old-deja/g++.law/init10.C: Likewise.
* g++.old-deja/g++.other/array3.C: Likewise.
|
|
gcc/ada/ChangeLog:
* gcc-interface/trans.c (gigi): Set exact argument of a vector
growth function to true.
(Attribute_to_gnu): Likewise.
gcc/ChangeLog:
* alias.c (init_alias_analysis): Set exact argument of a vector
growth function to true.
* calls.c (internal_arg_pointer_based_exp_scan): Likewise.
* cfgbuild.c (find_many_sub_basic_blocks): Likewise.
* cfgexpand.c (expand_asm_stmt): Likewise.
* cfgrtl.c (rtl_create_basic_block): Likewise.
* combine.c (combine_split_insns): Likewise.
(combine_instructions): Likewise.
* config/aarch64/aarch64-sve-builtins.cc (function_expander::add_output_operand): Likewise.
(function_expander::add_input_operand): Likewise.
(function_expander::add_integer_operand): Likewise.
(function_expander::add_address_operand): Likewise.
(function_expander::add_fixed_operand): Likewise.
* df-core.c (df_worklist_dataflow_doublequeue): Likewise.
* dwarf2cfi.c (update_row_reg_save): Likewise.
* early-remat.c (early_remat::init_block_info): Likewise.
(early_remat::finalize_candidate_indices): Likewise.
* except.c (sjlj_build_landing_pads): Likewise.
* final.c (compute_alignments): Likewise.
(grow_label_align): Likewise.
* function.c (temp_slots_at_level): Likewise.
* fwprop.c (build_single_def_use_links): Likewise.
(update_uses): Likewise.
* gcc.c (insert_wrapper): Likewise.
* genautomata.c (create_state_ainsn_table): Likewise.
(add_vect): Likewise.
(output_dead_lock_vect): Likewise.
* genmatch.c (capture_info::capture_info): Likewise.
(parser::finish_match_operand): Likewise.
* genrecog.c (optimize_subroutine_group): Likewise.
(merge_pattern_info::merge_pattern_info): Likewise.
(merge_into_decision): Likewise.
(print_subroutine_start): Likewise.
(main): Likewise.
* gimple-loop-versioning.cc (loop_versioning::loop_versioning): Likewise.
* gimple.c (gimple_set_bb): Likewise.
* graphite-isl-ast-to-gimple.c (translate_isl_ast_node_user): Likewise.
* haifa-sched.c (sched_extend_luids): Likewise.
(extend_h_i_d): Likewise.
* insn-addr.h (insn_addresses_new): Likewise.
* ipa-cp.c (gather_context_independent_values): Likewise.
(find_more_contexts_for_caller_subset): Likewise.
* ipa-devirt.c (final_warning_record::grow_type_warnings): Likewise.
(ipa_odr_read_section): Likewise.
* ipa-fnsummary.c (evaluate_properties_for_edge): Likewise.
(ipa_fn_summary_t::duplicate): Likewise.
(analyze_function_body): Likewise.
(ipa_merge_fn_summary_after_inlining): Likewise.
(read_ipa_call_summary): Likewise.
* ipa-icf.c (sem_function::bb_dict_test): Likewise.
* ipa-prop.c (ipa_alloc_node_params): Likewise.
(parm_bb_aa_status_for_bb): Likewise.
(ipa_compute_jump_functions_for_edge): Likewise.
(ipa_analyze_node): Likewise.
(update_jump_functions_after_inlining): Likewise.
(ipa_read_edge_info): Likewise.
(read_ipcp_transformation_info): Likewise.
(ipcp_transform_function): Likewise.
* ipa-reference.c (ipa_reference_write_optimization_summary): Likewise.
* ipa-split.c (execute_split_functions): Likewise.
* ira.c (find_moveable_pseudos): Likewise.
* lower-subreg.c (decompose_multiword_subregs): Likewise.
* lto-streamer-in.c (input_eh_regions): Likewise.
(input_cfg): Likewise.
(input_struct_function_base): Likewise.
(input_function): Likewise.
* modulo-sched.c (set_node_sched_params): Likewise.
(extend_node_sched_params): Likewise.
(schedule_reg_moves): Likewise.
* omp-general.c (omp_construct_simd_compare): Likewise.
* passes.c (pass_manager::create_pass_tab): Likewise.
(enable_disable_pass): Likewise.
* predict.c (determine_unlikely_bbs): Likewise.
* profile.c (compute_branch_probabilities): Likewise.
* read-rtl-function.c (function_reader::parse_block): Likewise.
* read-rtl.c (rtx_reader::read_rtx_code): Likewise.
* reg-stack.c (stack_regs_mentioned): Likewise.
* regrename.c (regrename_init): Likewise.
* rtlanal.c (T>::add_single_to_queue): Likewise.
* sched-deps.c (init_deps_data_vector): Likewise.
* sel-sched-ir.c (sel_extend_global_bb_info): Likewise.
(extend_region_bb_info): Likewise.
(extend_insn_data): Likewise.
* symtab.c (symtab_node::create_reference): Likewise.
* tracer.c (tail_duplicate): Likewise.
* trans-mem.c (tm_region_init): Likewise.
(get_bb_regions_instrumented): Likewise.
* tree-cfg.c (init_empty_tree_cfg_for_function): Likewise.
(build_gimple_cfg): Likewise.
(create_bb): Likewise.
(move_block_to_fn): Likewise.
* tree-complex.c (tree_lower_complex): Likewise.
* tree-if-conv.c (predicate_rhs_code): Likewise.
* tree-inline.c (copy_bb): Likewise.
* tree-into-ssa.c (get_ssa_name_ann): Likewise.
(mark_phi_for_rewrite): Likewise.
* tree-object-size.c (compute_builtin_object_size): Likewise.
(init_object_sizes): Likewise.
* tree-predcom.c (initialize_root_vars_store_elim_1): Likewise.
(initialize_root_vars_store_elim_2): Likewise.
(prepare_initializers_chain_store_elim): Likewise.
* tree-ssa-address.c (addr_for_mem_ref): Likewise.
(multiplier_allowed_in_address_p): Likewise.
* tree-ssa-coalesce.c (ssa_conflicts_new): Likewise.
* tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
* tree-ssa-loop-ivopts.c (addr_offset_valid_p): Likewise.
(get_address_cost_ainc): Likewise.
* tree-ssa-loop-niter.c (discover_iteration_bound_by_body_walk): Likewise.
* tree-ssa-pre.c (add_to_value): Likewise.
(phi_translate_1): Likewise.
(do_pre_regular_insertion): Likewise.
(do_pre_partial_partial_insertion): Likewise.
(init_pre): Likewise.
* tree-ssa-propagate.c (ssa_prop_init): Likewise.
(update_call_from_tree): Likewise.
* tree-ssa-reassoc.c (optimize_range_tests_cmp_bitwise): Likewise.
* tree-ssa-sccvn.c (vn_reference_lookup_3): Likewise.
(vn_reference_lookup_pieces): Likewise.
(eliminate_dom_walker::eliminate_push_avail): Likewise.
* tree-ssa-strlen.c (set_strinfo): Likewise.
(get_stridx_plus_constant): Likewise.
(zero_length_string): Likewise.
(find_equal_ptrs): Likewise.
(printf_strlen_execute): Likewise.
* tree-ssa-threadedge.c (set_ssa_name_value): Likewise.
* tree-ssanames.c (make_ssa_name_fn): Likewise.
* tree-streamer-in.c (streamer_read_tree_bitfields): Likewise.
* tree-vect-loop.c (vect_record_loop_mask): Likewise.
(vect_get_loop_mask): Likewise.
(vect_record_loop_len): Likewise.
(vect_get_loop_len): Likewise.
* tree-vect-patterns.c (vect_recog_mask_conversion_pattern): Likewise.
* tree-vect-slp.c (vect_slp_convert_to_external): Likewise.
(vect_bb_slp_scalar_cost): Likewise.
(vect_bb_vectorization_profitable_p): Likewise.
(vectorizable_slp_permutation): Likewise.
* tree-vect-stmts.c (vectorizable_call): Likewise.
(vectorizable_simd_clone_call): Likewise.
(scan_store_can_perm_p): Likewise.
(vectorizable_store): Likewise.
* expr.c: Likewise.
* vec.c (test_safe_grow_cleared): Likewise.
* vec.h (vec_safe_grow): Likewise.
(vec_safe_grow_cleared): Likewise.
(vl_ptr>::safe_grow): Likewise.
(vl_ptr>::safe_grow_cleared): Likewise.
* config/c6x/c6x.c (insn_set_clock): Likewise.
gcc/c/ChangeLog:
* gimple-parser.c (c_parser_gimple_compound_statement): Set exact argument of a vector
growth function to true.
gcc/cp/ChangeLog:
* class.c (build_vtbl_initializer): Set exact argument of a vector
growth function to true.
* constraint.cc (get_mapped_args): Likewise.
* decl.c (cp_maybe_mangle_decomp): Likewise.
(cp_finish_decomp): Likewise.
* parser.c (cp_parser_omp_for_loop): Likewise.
* pt.c (canonical_type_parameter): Likewise.
* rtti.c (get_pseudo_ti_init): Likewise.
gcc/fortran/ChangeLog:
* trans-openmp.c (gfc_trans_omp_do): Set exact argument of a vector
growth function to true.
gcc/lto/ChangeLog:
* lto-common.c (lto_file_finalize): Set exact argument of a vector
growth function to true.
|
