void
cxx_print_decl (FILE *file, tree node, int indent)
{
if (TREE_CODE (node) == FIELD_DECL)
{
if (DECL_MUTABLE_P (node))
{
indent_to (file, indent + 3);
fprintf (file, " mutable ");
}
return;
}
if (!CODE_CONTAINS_STRUCT (TREE_CODE (node), TS_DECL_COMMON)
|| !DECL_LANG_SPECIFIC (node))
return;
indent_to (file, indent + 3);
if (TREE_CODE (node) == FUNCTION_DECL
&& DECL_PENDING_INLINE_INFO (node))
fprintf (file, " pending-inline-info %p",
(void *) DECL_PENDING_INLINE_INFO (node));
if (TREE_CODE (node) == TYPE_DECL
&& DECL_SORTED_FIELDS (node))
fprintf (file, " sorted-fields %p",
(void *) DECL_SORTED_FIELDS (node));
if ((TREE_CODE (node) == FUNCTION_DECL || TREE_CODE (node) == VAR_DECL)
&& DECL_TEMPLATE_INFO (node))
fprintf (file, " template-info %p",
(void *) DECL_TEMPLATE_INFO (node));
}
tree
make_alias_for (tree function, tree newid)
{
tree alias = build_decl (FUNCTION_DECL, newid, TREE_TYPE (function));
DECL_LANG_SPECIFIC (alias) = DECL_LANG_SPECIFIC (function);
cxx_dup_lang_specific_decl (alias);
DECL_CONTEXT (alias) = NULL;
TREE_READONLY (alias) = TREE_READONLY (function);
TREE_THIS_VOLATILE (alias) = TREE_THIS_VOLATILE (function);
TREE_PUBLIC (alias) = 0;
DECL_INTERFACE_KNOWN (alias) = 1;
DECL_NOT_REALLY_EXTERN (alias) = 1;
DECL_THIS_STATIC (alias) = 1;
DECL_SAVED_FUNCTION_DATA (alias) = NULL;
DECL_DESTRUCTOR_P (alias) = 0;
DECL_CONSTRUCTOR_P (alias) = 0;
DECL_CLONED_FUNCTION (alias) = NULL_TREE;
DECL_EXTERNAL (alias) = 0;
DECL_ARTIFICIAL (alias) = 1;
DECL_NO_STATIC_CHAIN (alias) = 1;
DECL_PENDING_INLINE_P (alias) = 0;
DECL_INLINE (alias) = 0;
DECL_DECLARED_INLINE_P (alias) = 0;
DECL_DEFERRED_FN (alias) = 0;
DECL_USE_TEMPLATE (alias) = 0;
DECL_TEMPLATE_INSTANTIATED (alias) = 0;
DECL_TEMPLATE_INFO (alias) = NULL;
DECL_INITIAL (alias) = error_mark_node;
TREE_ADDRESSABLE (alias) = 1;
TREE_USED (alias) = 1;
SET_DECL_ASSEMBLER_NAME (alias, DECL_NAME (alias));
TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (alias)) = 1;
return alias;
}
bool
generic_lambda_fn_p (tree callop)
{
return (LAMBDA_FUNCTION_P (callop)
&& DECL_TEMPLATE_INFO (callop)
&& PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (callop)));
}
void
cxx_print_decl (FILE *file, tree node, int indent)
{
if (TREE_CODE (node) == FIELD_DECL)
{
if (DECL_MUTABLE_P (node))
{
indent_to (file, indent + 3);
fprintf (file, " mutable ");
}
return;
}
if (!CODE_CONTAINS_STRUCT (TREE_CODE (node), TS_DECL_COMMON)
|| !DECL_LANG_SPECIFIC (node))
return;
if (TREE_CODE (node) == FUNCTION_DECL)
{
int flags = TFF_DECL_SPECIFIERS|TFF_RETURN_TYPE
|TFF_FUNCTION_DEFAULT_ARGUMENTS|TFF_EXCEPTION_SPECIFICATION ;
indent_to (file, indent + 3);
fprintf (file, " full-name \"%s\"", decl_as_string (node, flags));
}
else if (TREE_CODE (node) == TEMPLATE_DECL)
{
indent_to (file, indent + 3);
fprintf (file, " full-name \"%s\"",
decl_as_string (node, TFF_TEMPLATE_HEADER));
}
indent_to (file, indent + 3);
if (DECL_EXTERNAL (node) && DECL_NOT_REALLY_EXTERN (node))
fprintf (file, " not-really-extern");
if (TREE_CODE (node) == FUNCTION_DECL
&& DECL_PENDING_INLINE_INFO (node))
fprintf (file, " pending-inline-info %p",
(void *) DECL_PENDING_INLINE_INFO (node));
if (VAR_OR_FUNCTION_DECL_P (node)
&& DECL_TEMPLATE_INFO (node))
fprintf (file, " template-info %p",
(void *) DECL_TEMPLATE_INFO (node));
}
static tree
make_alias_for_thunk (tree function)
{
tree alias;
char buf[256];
#if defined (TARGET_IS_PE_COFF)
if (DECL_ONE_ONLY (function))
return function;
#endif
ASM_GENERATE_INTERNAL_LABEL (buf, "LTHUNK", thunk_labelno);
thunk_labelno++;
alias = build_decl (FUNCTION_DECL, get_identifier (buf),
TREE_TYPE (function));
DECL_LANG_SPECIFIC (alias) = DECL_LANG_SPECIFIC (function);
cxx_dup_lang_specific_decl (alias);
DECL_CONTEXT (alias) = NULL;
TREE_READONLY (alias) = TREE_READONLY (function);
TREE_THIS_VOLATILE (alias) = TREE_THIS_VOLATILE (function);
TREE_PUBLIC (alias) = 0;
DECL_INTERFACE_KNOWN (alias) = 1;
DECL_NOT_REALLY_EXTERN (alias) = 1;
DECL_THIS_STATIC (alias) = 1;
DECL_SAVED_FUNCTION_DATA (alias) = NULL;
DECL_DESTRUCTOR_P (alias) = 0;
DECL_CONSTRUCTOR_P (alias) = 0;
DECL_CLONED_FUNCTION (alias) = NULL_TREE;
DECL_EXTERNAL (alias) = 0;
DECL_ARTIFICIAL (alias) = 1;
DECL_NO_STATIC_CHAIN (alias) = 1;
DECL_PENDING_INLINE_P (alias) = 0;
DECL_INLINE (alias) = 0;
DECL_DECLARED_INLINE_P (alias) = 0;
DECL_DEFERRED_FN (alias) = 0;
DECL_USE_TEMPLATE (alias) = 0;
DECL_TEMPLATE_INSTANTIATED (alias) = 0;
DECL_TEMPLATE_INFO (alias) = NULL;
DECL_INITIAL (alias) = error_mark_node;
TREE_ADDRESSABLE (alias) = 1;
TREE_USED (alias) = 1;
SET_DECL_ASSEMBLER_NAME (alias, DECL_NAME (alias));
TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (alias)) = 1;
if (!flag_syntax_only)
assemble_alias (alias, DECL_ASSEMBLER_NAME (function));
return alias;
}
tree
make_alias_for (tree target, tree newid)
{
tree alias = build_decl (DECL_SOURCE_LOCATION (target),
TREE_CODE (target), newid, TREE_TYPE (target));
DECL_LANG_SPECIFIC (alias) = DECL_LANG_SPECIFIC (target);
cxx_dup_lang_specific_decl (alias);
DECL_CONTEXT (alias) = NULL;
TREE_READONLY (alias) = TREE_READONLY (target);
TREE_THIS_VOLATILE (alias) = TREE_THIS_VOLATILE (target);
TREE_PUBLIC (alias) = 0;
DECL_INTERFACE_KNOWN (alias) = 1;
if (DECL_LANG_SPECIFIC (alias))
{
DECL_NOT_REALLY_EXTERN (alias) = 1;
DECL_USE_TEMPLATE (alias) = 0;
DECL_TEMPLATE_INFO (alias) = NULL;
}
DECL_EXTERNAL (alias) = 0;
DECL_ARTIFICIAL (alias) = 1;
DECL_TEMPLATE_INSTANTIATED (alias) = 0;
if (TREE_CODE (alias) == FUNCTION_DECL)
{
DECL_SAVED_FUNCTION_DATA (alias) = NULL;
DECL_DESTRUCTOR_P (alias) = 0;
DECL_CONSTRUCTOR_P (alias) = 0;
DECL_PENDING_INLINE_P (alias) = 0;
DECL_DECLARED_INLINE_P (alias) = 0;
DECL_INITIAL (alias) = error_mark_node;
DECL_ARGUMENTS (alias) = copy_list (DECL_ARGUMENTS (target));
}
else
TREE_STATIC (alias) = 1;
TREE_ADDRESSABLE (alias) = 1;
TREE_USED (alias) = 1;
SET_DECL_ASSEMBLER_NAME (alias, DECL_NAME (alias));
TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (alias)) = 1;
return alias;
}
void
maybe_add_lambda_conv_op (tree type)
{
bool nested = (cfun != NULL);
bool nested_def = decl_function_context (TYPE_MAIN_DECL (type));
tree callop = lambda_function (type);
if (LAMBDA_EXPR_CAPTURE_LIST (CLASSTYPE_LAMBDA_EXPR (type)) != NULL_TREE)
return;
if (processing_template_decl)
return;
bool const generic_lambda_p
= (DECL_TEMPLATE_INFO (callop)
&& DECL_TEMPLATE_RESULT (DECL_TI_TEMPLATE (callop)) == callop);
if (!generic_lambda_p && DECL_INITIAL (callop) == NULL_TREE)
{
/* If the op() wasn't instantiated due to errors, give up. */
gcc_assert (errorcount || sorrycount);
return;
}
/* Non-template conversion operators are defined directly with build_call_a
and using DIRECT_ARGVEC for arguments (including 'this'). Templates are
deferred and the CALL is built in-place. In the case of a deduced return
call op, the decltype expression, DECLTYPE_CALL, used as a substitute for
the return type is also built in-place. The arguments of DECLTYPE_CALL in
the return expression may differ in flags from those in the body CALL. In
particular, parameter pack expansions are marked PACK_EXPANSION_LOCAL_P in
the body CALL, but not in DECLTYPE_CALL. */
vec<tree, va_gc> *direct_argvec = 0;
tree decltype_call = 0, call = 0;
tree fn_result = TREE_TYPE (TREE_TYPE (callop));
if (generic_lambda_p)
{
/* Prepare the dependent member call for the static member function
'_FUN' and, potentially, prepare another call to be used in a decltype
return expression for a deduced return call op to allow for simple
implementation of the conversion operator. */
tree instance = build_nop (type, null_pointer_node);
tree objfn = build_min (COMPONENT_REF, NULL_TREE,
instance, DECL_NAME (callop), NULL_TREE);
int nargs = list_length (DECL_ARGUMENTS (callop)) - 1;
call = prepare_op_call (objfn, nargs);
if (type_uses_auto (fn_result))
decltype_call = prepare_op_call (objfn, nargs);
}
else
{
direct_argvec = make_tree_vector ();
direct_argvec->quick_push (build1 (NOP_EXPR,
TREE_TYPE (DECL_ARGUMENTS (callop)),
null_pointer_node));
}
/* Copy CALLOP's argument list (as per 'copy_list') as FN_ARGS in order to
declare the static member function "_FUN" below. For each arg append to
DIRECT_ARGVEC (for the non-template case) or populate the pre-allocated
call args (for the template case). If a parameter pack is found, expand
it, flagging it as PACK_EXPANSION_LOCAL_P for the body call. */
tree fn_args = NULL_TREE;
{
int ix = 0;
tree src = DECL_CHAIN (DECL_ARGUMENTS (callop));
tree tgt;
while (src)
{
tree new_node = copy_node (src);
if (!fn_args)
fn_args = tgt = new_node;
else
{
TREE_CHAIN (tgt) = new_node;
tgt = new_node;
}
mark_exp_read (tgt);
if (generic_lambda_p)
{
if (DECL_PACK_P (tgt))
{
tree a = make_pack_expansion (tgt);
if (decltype_call)
CALL_EXPR_ARG (decltype_call, ix) = copy_node (a);
PACK_EXPANSION_LOCAL_P (a) = true;
CALL_EXPR_ARG (call, ix) = a;
}
else
{
tree a = convert_from_reference (tgt);
CALL_EXPR_ARG (call, ix) = a;
if (decltype_call)
CALL_EXPR_ARG (decltype_call, ix) = copy_node (a);
}
++ix;
}
else
vec_safe_push (direct_argvec, tgt);
src = TREE_CHAIN (src);
}
}
if (generic_lambda_p)
{
if (decltype_call)
{
++processing_template_decl;
fn_result = finish_decltype_type
(decltype_call, /*id_expression_or_member_access_p=*/false,
tf_warning_or_error);
--processing_template_decl;
}
}
else
call = build_call_a (callop,
direct_argvec->length (),
direct_argvec->address ());
CALL_FROM_THUNK_P (call) = 1;
tree stattype = build_function_type (fn_result, FUNCTION_ARG_CHAIN (callop));
/* First build up the conversion op. */
tree rettype = build_pointer_type (stattype);
tree name = mangle_conv_op_name_for_type (rettype);
tree thistype = cp_build_qualified_type (type, TYPE_QUAL_CONST);
tree fntype = build_method_type_directly (thistype, rettype, void_list_node);
tree convfn = build_lang_decl (FUNCTION_DECL, name, fntype);
tree fn = convfn;
DECL_SOURCE_LOCATION (fn) = DECL_SOURCE_LOCATION (callop);
if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
&& DECL_ALIGN (fn) < 2 * BITS_PER_UNIT)
DECL_ALIGN (fn) = 2 * BITS_PER_UNIT;
SET_OVERLOADED_OPERATOR_CODE (fn, TYPE_EXPR);
grokclassfn (type, fn, NO_SPECIAL);
set_linkage_according_to_type (type, fn);
rest_of_decl_compilation (fn, toplevel_bindings_p (), at_eof);
DECL_IN_AGGR_P (fn) = 1;
DECL_ARTIFICIAL (fn) = 1;
DECL_NOT_REALLY_EXTERN (fn) = 1;
DECL_DECLARED_INLINE_P (fn) = 1;
DECL_ARGUMENTS (fn) = build_this_parm (fntype, TYPE_QUAL_CONST);
if (nested_def)
DECL_INTERFACE_KNOWN (fn) = 1;
if (generic_lambda_p)
fn = add_inherited_template_parms (fn, DECL_TI_TEMPLATE (callop));
add_method (type, fn, NULL_TREE);
/* Generic thunk code fails for varargs; we'll complain in mark_used if
the conversion op is used. */
if (varargs_function_p (callop))
{
DECL_DELETED_FN (fn) = 1;
return;
}
/* Now build up the thunk to be returned. */
name = get_identifier ("_FUN");
tree statfn = build_lang_decl (FUNCTION_DECL, name, stattype);
fn = statfn;
DECL_SOURCE_LOCATION (fn) = DECL_SOURCE_LOCATION (callop);
if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
&& DECL_ALIGN (fn) < 2 * BITS_PER_UNIT)
DECL_ALIGN (fn) = 2 * BITS_PER_UNIT;
grokclassfn (type, fn, NO_SPECIAL);
set_linkage_according_to_type (type, fn);
rest_of_decl_compilation (fn, toplevel_bindings_p (), at_eof);
DECL_IN_AGGR_P (fn) = 1;
DECL_ARTIFICIAL (fn) = 1;
DECL_NOT_REALLY_EXTERN (fn) = 1;
DECL_DECLARED_INLINE_P (fn) = 1;
DECL_STATIC_FUNCTION_P (fn) = 1;
DECL_ARGUMENTS (fn) = fn_args;
for (tree arg = fn_args; arg; arg = DECL_CHAIN (arg))
{
/* Avoid duplicate -Wshadow warnings. */
DECL_NAME (arg) = NULL_TREE;
DECL_CONTEXT (arg) = fn;
}
if (nested_def)
DECL_INTERFACE_KNOWN (fn) = 1;
if (generic_lambda_p)
fn = add_inherited_template_parms (fn, DECL_TI_TEMPLATE (callop));
add_method (type, fn, NULL_TREE);
if (nested)
push_function_context ();
else
/* Still increment function_depth so that we don't GC in the
middle of an expression. */
++function_depth;
/* Generate the body of the thunk. */
start_preparsed_function (statfn, NULL_TREE,
SF_PRE_PARSED | SF_INCLASS_INLINE);
if (DECL_ONE_ONLY (statfn))
{
/* Put the thunk in the same comdat group as the call op. */
cgraph_node::get_create (statfn)->add_to_same_comdat_group
(cgraph_node::get_create (callop));
}
tree body = begin_function_body ();
tree compound_stmt = begin_compound_stmt (0);
if (!generic_lambda_p)
{
set_flags_from_callee (call);
if (MAYBE_CLASS_TYPE_P (TREE_TYPE (call)))
call = build_cplus_new (TREE_TYPE (call), call, tf_warning_or_error);
}
call = convert_from_reference (call);
finish_return_stmt (call);
finish_compound_stmt (compound_stmt);
finish_function_body (body);
fn = finish_function (/*inline*/2);
if (!generic_lambda_p)
expand_or_defer_fn (fn);
/* Generate the body of the conversion op. */
start_preparsed_function (convfn, NULL_TREE,
SF_PRE_PARSED | SF_INCLASS_INLINE);
body = begin_function_body ();
compound_stmt = begin_compound_stmt (0);
/* decl_needed_p needs to see that it's used. */
TREE_USED (statfn) = 1;
finish_return_stmt (decay_conversion (statfn, tf_warning_or_error));
finish_compound_stmt (compound_stmt);
finish_function_body (body);
fn = finish_function (/*inline*/2);
if (!generic_lambda_p)
expand_or_defer_fn (fn);
if (nested)
pop_function_context ();
else
--function_depth;
}
void gcc_plugin_finish_decl(void *gcc_data, void *user_data)
{
tree decl = (tree) gcc_data;
tree type = TREE_TYPE(decl);
// push this onto the pending parameters if necessary.
if (TREE_CODE(decl) == PARM_DECL) {
// we should only see parameter declarations for C.
gcc_assert(!c_dialect_cxx());
struct XIL_ParamDecl *last = xil_pending_param_decls;
while (last && last->next) last = last->next;
struct XIL_ParamDecl *param_decl = xcalloc(1, sizeof(struct XIL_ParamDecl));
param_decl->decl = decl;
if (last) last->next = param_decl;
else xil_pending_param_decls = param_decl;
return;
}
// check for typedefs on structures, and assign the structure a name
// if one is found.
if (TREE_CODE(decl) == TYPE_DECL &&
(TREE_CODE(type) == RECORD_TYPE || TREE_CODE(type) == UNION_TYPE)) {
if (XIL_IsAnonymous(type)) {
const char *name = IDENTIFIER_POINTER(DECL_NAME(decl));
XIL_CSUName(type, name);
}
}
// check for a global variable.
bool is_global = false;
if (TREE_CODE(decl) == VAR_DECL) {
if (DECL_CONTEXT(decl) == NULL)
is_global = true;
if (TREE_STATIC(decl))
is_global = true;
}
bool is_function = (TREE_CODE(decl) == FUNCTION_DECL);
if (!is_global && !is_function)
return;
// only processing the output function for annotations.
if (xil_has_annotation)
return;
XIL_Var var = XIL_TranslateVar(decl);
const char *name = XIL_GetVarName(var);
// future parameter declarations will be for a different function.
xil_pending_param_decls = NULL;
if (!is_global)
return;
// check if this is a global variable we want to skip. these are introduced
// for type information globals.
static const char *bad_prefix_list[] = {
"const __class_type_info_pseudo",
"const __si_class_type_info_pseudo",
"const __vmi_class_type_info_pseudo",
"const char _ZTS",
NULL
};
int ind;
for (ind = 0; bad_prefix_list[ind]; ind++) {
const char *bad_prefix = bad_prefix_list[ind];
if (!strncmp(name, bad_prefix, strlen(bad_prefix)))
return;
}
// if the decl is contained in a template class then skip it. we can only
// handle instantiated declarations, and will only see the uninstantiated
// declarations here. TODO: is there a way to get these?
if (DECL_LANG_SPECIFIC(decl) != NULL &&
DECL_TEMPLATE_INFO(decl) != NULL)
return;
tree context = DECL_CONTEXT(decl);
while (context && TREE_CODE(context) == FUNCTION_DECL) {
if (DECL_LANG_SPECIFIC(context) != NULL &&
DECL_TEMPLATE_INFO(context) != NULL)
return;
context = DECL_CONTEXT(context);
}
// this is a function or global, process any annotation attributes.
tree attr = DECL_ATTRIBUTES(decl);
while (attr) {
XIL_ProcessAnnotationAttr(decl, attr, NULL, NULL);
attr = TREE_CHAIN(attr);
}
// also look for annotations read in from file.
for (ind = 0; ind < XIL_GetAnnotationCount(name, !is_function, false); ind++) {
const char *where;
const char *point_text, *annot_text;
int trusted;
XIL_GetAnnotation(name, !is_function, false, ind, &where,
&point_text, &annot_text, &trusted);
// we'll handle loop invariants and point assertions after seeing the
// function's definition.
if (!strncmp(where, "loop", 4) || point_text)
continue;
XIL_ProcessAnnotationRead(decl, where, point_text, annot_text, trusted);
}
XIL_GenerateBlock(decl);
}
tree
do_friend (tree ctype, tree declarator, tree decl,
tree attrlist, enum overload_flags flags,
bool funcdef_flag)
{
gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
gcc_assert (!ctype || MAYBE_CLASS_TYPE_P (ctype));
/* Every decl that gets here is a friend of something. */
DECL_FRIEND_P (decl) = 1;
/* Unfortunately, we have to handle attributes here. Normally we would
handle them in start_decl_1, but since this is a friend decl start_decl_1
never gets to see it. */
/* Set attributes here so if duplicate decl, will have proper attributes. */
cplus_decl_attributes (&decl, attrlist, 0);
if (TREE_CODE (declarator) == TEMPLATE_ID_EXPR)
{
declarator = TREE_OPERAND (declarator, 0);
if (is_overloaded_fn (declarator))
declarator = DECL_NAME (get_first_fn (declarator));
}
if (ctype)
{
/* CLASS_TEMPLATE_DEPTH counts the number of template headers for
the enclosing class. FRIEND_DEPTH counts the number of template
headers used for this friend declaration. TEMPLATE_MEMBER_P is
true if a template header in FRIEND_DEPTH is intended for
DECLARATOR. For example, the code
template <class T> struct A {
template <class U> struct B {
template <class V> template <class W>
friend void C<V>::f(W);
};
};
will eventually give the following results
1. CLASS_TEMPLATE_DEPTH equals 2 (for `T' and `U').
2. FRIEND_DEPTH equals 2 (for `V' and `W').
3. TEMPLATE_MEMBER_P is true (for `W'). */
int class_template_depth = template_class_depth (current_class_type);
int friend_depth = processing_template_decl - class_template_depth;
/* We will figure this out later. */
bool template_member_p = false;
tree cname = TYPE_NAME (ctype);
if (TREE_CODE (cname) == TYPE_DECL)
cname = DECL_NAME (cname);
/* A method friend. */
if (flags == NO_SPECIAL && declarator == cname)
DECL_CONSTRUCTOR_P (decl) = 1;
grokclassfn (ctype, decl, flags);
if (friend_depth)
{
if (!uses_template_parms_level (ctype, class_template_depth
+ friend_depth))
template_member_p = true;
}
/* A nested class may declare a member of an enclosing class
to be a friend, so we do lookup here even if CTYPE is in
the process of being defined. */
if (class_template_depth
|| COMPLETE_TYPE_P (ctype)
|| (CLASS_TYPE_P (ctype) && TYPE_BEING_DEFINED (ctype)))
{
if (DECL_TEMPLATE_INFO (decl))
/* DECL is a template specialization. No need to
build a new TEMPLATE_DECL. */
;
else if (class_template_depth)
/* We rely on tsubst_friend_function to check the
validity of the declaration later. */
decl = push_template_decl_real (decl, /*is_friend=*/true);
else
decl = check_classfn (ctype, decl,
template_member_p
? current_template_parms
: NULL_TREE);
if (template_member_p && decl && TREE_CODE (decl) == FUNCTION_DECL)
decl = DECL_TI_TEMPLATE (decl);
if (decl)
add_friend (current_class_type, decl, /*complain=*/true);
}
else
error ("member %qD declared as friend before type %qT defined",
decl, ctype);
}
/* A global friend.
@@ or possibly a friend from a base class ?!? */
else if (TREE_CODE (decl) == FUNCTION_DECL)
{
int is_friend_template = PROCESSING_REAL_TEMPLATE_DECL_P ();
/* Friends must all go through the overload machinery,
even though they may not technically be overloaded.
Note that because classes all wind up being top-level
in their scope, their friend wind up in top-level scope as well. */
if (funcdef_flag)
SET_DECL_FRIEND_CONTEXT (decl, current_class_type);
if (! DECL_USE_TEMPLATE (decl))
{
/* We must check whether the decl refers to template
arguments before push_template_decl_real adds a
reference to the containing template class. */
int warn = (warn_nontemplate_friend
&& ! funcdef_flag && ! is_friend_template
&& current_template_parms
&& uses_template_parms (decl));
if (is_friend_template
|| template_class_depth (current_class_type) != 0)
/* We can't call pushdecl for a template class, since in
general, such a declaration depends on template
parameters. Instead, we call pushdecl when the class
is instantiated. */
decl = push_template_decl_real (decl, /*is_friend=*/true);
else if (current_function_decl)
{
/* This must be a local class. 11.5p11:
If a friend declaration appears in a local class (9.8) and
the name specified is an unqualified name, a prior
declaration is looked up without considering scopes that
are outside the innermost enclosing non-class scope. For a
friend function declaration, if there is no prior
declaration, the program is ill-formed. */
tree t = lookup_name_innermost_nonclass_level (DECL_NAME (decl));
if (t)
decl = pushdecl_maybe_friend (decl, /*is_friend=*/true);
else
{
error ("friend declaration %qD in local class without "
"prior declaration", decl);
return error_mark_node;
}
}
else
{
/* We can't use pushdecl, as we might be in a template
class specialization, and pushdecl will insert an
unqualified friend decl into the template parameter
scope, rather than the namespace containing it. */
tree ns = decl_namespace_context (decl);
push_nested_namespace (ns);
decl = pushdecl_namespace_level (decl, /*is_friend=*/true);
pop_nested_namespace (ns);
}
if (warn)
{
static int explained;
bool warned;
warned = warning (OPT_Wnon_template_friend, "friend declaration "
"%q#D declares a non-template function", decl);
if (! explained && warned)
{
inform (input_location, "(if this is not what you intended, make sure "
"the function template has already been declared "
"and add <> after the function name here) ");
explained = 1;
}
}
}
if (decl == error_mark_node)
return error_mark_node;
add_friend (current_class_type,
is_friend_template ? DECL_TI_TEMPLATE (decl) : decl,
/*complain=*/true);
DECL_FRIEND_P (decl) = 1;
}
return decl;
}
tree
make_thunk (tree function, bool this_adjusting,
tree fixed_offset, tree virtual_offset)
{
HOST_WIDE_INT d;
tree thunk;
gcc_assert (TREE_CODE (function) == FUNCTION_DECL);
/* We can have this thunks to covariant thunks, but not vice versa. */
gcc_assert (!DECL_THIS_THUNK_P (function));
gcc_assert (!DECL_RESULT_THUNK_P (function) || this_adjusting);
/* Scale the VIRTUAL_OFFSET to be in terms of bytes. */
if (this_adjusting && virtual_offset)
virtual_offset
= size_binop (MULT_EXPR,
virtual_offset,
convert (ssizetype,
TYPE_SIZE_UNIT (vtable_entry_type)));
d = tree_low_cst (fixed_offset, 0);
/* See if we already have the thunk in question. For this_adjusting
thunks VIRTUAL_OFFSET will be an INTEGER_CST, for covariant thunks it
will be a BINFO. */
for (thunk = DECL_THUNKS (function); thunk; thunk = TREE_CHAIN (thunk))
if (DECL_THIS_THUNK_P (thunk) == this_adjusting
&& THUNK_FIXED_OFFSET (thunk) == d
&& !virtual_offset == !THUNK_VIRTUAL_OFFSET (thunk)
&& (!virtual_offset
|| (this_adjusting
? tree_int_cst_equal (THUNK_VIRTUAL_OFFSET (thunk),
virtual_offset)
: THUNK_VIRTUAL_OFFSET (thunk) == virtual_offset)))
return thunk;
/* All thunks must be created before FUNCTION is actually emitted;
the ABI requires that all thunks be emitted together with the
function to which they transfer control. */
gcc_assert (!TREE_ASM_WRITTEN (function));
/* Likewise, we can only be adding thunks to a function declared in
the class currently being laid out. */
gcc_assert (TYPE_SIZE (DECL_CONTEXT (function))
&& TYPE_BEING_DEFINED (DECL_CONTEXT (function)));
thunk = build_decl (FUNCTION_DECL, NULL_TREE, TREE_TYPE (function));
DECL_LANG_SPECIFIC (thunk) = DECL_LANG_SPECIFIC (function);
cxx_dup_lang_specific_decl (thunk);
DECL_THUNKS (thunk) = NULL_TREE;
DECL_CONTEXT (thunk) = DECL_CONTEXT (function);
TREE_READONLY (thunk) = TREE_READONLY (function);
TREE_THIS_VOLATILE (thunk) = TREE_THIS_VOLATILE (function);
TREE_PUBLIC (thunk) = TREE_PUBLIC (function);
SET_DECL_THUNK_P (thunk, this_adjusting);
THUNK_TARGET (thunk) = function;
THUNK_FIXED_OFFSET (thunk) = d;
THUNK_VIRTUAL_OFFSET (thunk) = virtual_offset;
THUNK_ALIAS (thunk) = NULL_TREE;
/* The thunk itself is not a constructor or destructor, even if
the thing it is thunking to is. */
DECL_INTERFACE_KNOWN (thunk) = 1;
DECL_NOT_REALLY_EXTERN (thunk) = 1;
DECL_SAVED_FUNCTION_DATA (thunk) = NULL;
DECL_DESTRUCTOR_P (thunk) = 0;
DECL_CONSTRUCTOR_P (thunk) = 0;
DECL_EXTERNAL (thunk) = 1;
DECL_ARTIFICIAL (thunk) = 1;
/* Even if this thunk is a member of a local class, we don't
need a static chain. */
DECL_NO_STATIC_CHAIN (thunk) = 1;
/* The THUNK is not a pending inline, even if the FUNCTION is. */
DECL_PENDING_INLINE_P (thunk) = 0;
DECL_INLINE (thunk) = 0;
DECL_DECLARED_INLINE_P (thunk) = 0;
/* Nor has it been deferred. */
DECL_DEFERRED_FN (thunk) = 0;
/* Nor is it a template instantiation. */
DECL_USE_TEMPLATE (thunk) = 0;
DECL_TEMPLATE_INFO (thunk) = NULL;
/* Add it to the list of thunks associated with FUNCTION. */
TREE_CHAIN (thunk) = DECL_THUNKS (function);
DECL_THUNKS (function) = thunk;
return thunk;
}
