/* Breadth-first and depth-first routines for
searching multiple-inheritance lattice for GNU C++.
Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 1999, 2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Contributed by Michael Tiemann (tiemann@cygnus.com)
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
/* High-level class interface. */
#include "rtl.h"
#include "output.h"
#include "toplev.h"
-#include "stack.h"
static int is_subobject_of_p (tree, tree);
static tree dfs_lookup_base (tree, void *);
struct lookup_base_data_s
{
tree t; /* type being searched. */
- tree base; /* The base type we're looking for. */
- tree binfo; /* Found binfo. */
- bool via_virtual; /* Found via a virtual path. */
+ tree base; /* The base type we're looking for. */
+ tree binfo; /* Found binfo. */
+ bool via_virtual; /* Found via a virtual path. */
bool ambiguous; /* Found multiply ambiguous */
- bool repeated_base; /* Whether there are repeated bases in the
+ bool repeated_base; /* Whether there are repeated bases in the
hierarchy. */
- bool want_any; /* Whether we want any matching binfo. */
+ bool want_any; /* Whether we want any matching binfo. */
};
/* Worker function for lookup_base. See if we've found the desired
static tree
dfs_lookup_base (tree binfo, void *data_)
{
- struct lookup_base_data_s *data = data_;
+ struct lookup_base_data_s *data = (struct lookup_base_data_s *) data_;
if (SAME_BINFO_TYPE_P (BINFO_TYPE (binfo), data->base))
{
data->binfo = binfo;
data->via_virtual
= binfo_via_virtual (data->binfo, data->t) != NULL_TREE;
-
+
if (!data->repeated_base)
/* If there are no repeated bases, we can stop now. */
return binfo;
-
+
if (data->want_any && !data->via_virtual)
/* If this is a non-virtual base, then we can't do
better. */
return binfo;
-
+
return dfs_skip_bases;
}
else
{
gcc_assert (binfo != data->binfo);
-
+
/* We've found more than one matching binfo. */
if (!data->want_any)
{
return dfs_skip_bases;
}
}
-
+
return NULL_TREE;
}
/* [class.access.base]
A base class is said to be accessible if an invented public
- member of the base class is accessible.
+ member of the base class is accessible.
If BASE is a non-proper base, this condition is trivially
true. */
tree binfo;
tree t_binfo;
base_kind bk;
-
+
if (t == error_mark_node || base == error_mark_node)
{
if (kind_ptr)
return error_mark_node;
}
gcc_assert (TYPE_P (base));
-
+
if (!TYPE_P (t))
{
t_binfo = t;
t = complete_type (TYPE_MAIN_VARIANT (t));
t_binfo = TYPE_BINFO (t);
}
-
+
base = complete_type (TYPE_MAIN_VARIANT (base));
if (t_binfo)
dfs_walk_once (t_binfo, dfs_lookup_base, NULL, &data);
binfo = data.binfo;
-
+
if (!binfo)
bk = data.ambiguous ? bk_ambig : bk_not_base;
else if (binfo == t_binfo)
if (kind_ptr)
*kind_ptr = bk;
-
+
return binfo;
}
static tree
dfs_dcast_hint_pre (tree binfo, void *data_)
{
- struct dcast_data_s *data = data_;
+ struct dcast_data_s *data = (struct dcast_data_s *) data_;
if (BINFO_VIRTUAL_P (binfo))
data->virt_depth++;
-
+
if (SAME_BINFO_TYPE_P (BINFO_TYPE (binfo), data->subtype))
{
if (data->virt_depth)
static tree
dfs_dcast_hint_post (tree binfo, void *data_)
{
- struct dcast_data_s *data = data_;
+ struct dcast_data_s *data = (struct dcast_data_s *) data_;
if (BINFO_VIRTUAL_P (binfo))
data->virt_depth--;
data.virt_depth = 0;
data.offset = NULL_TREE;
data.repeated_base = CLASSTYPE_REPEATED_BASE_P (target);
-
+
dfs_walk_once_accessible (TYPE_BINFO (target), /*friends=*/false,
dfs_dcast_hint_pre, dfs_dcast_hint_post, &data);
return data.offset ? data.offset : ssize_int (-2);
if (TREE_CODE (type) == TEMPLATE_TYPE_PARM
|| TREE_CODE (type) == BOUND_TEMPLATE_TEMPLATE_PARM
|| TREE_CODE (type) == TYPENAME_TYPE)
- /* The TYPE_FIELDS of a TEMPLATE_TYPE_PARM and
+ /* The TYPE_FIELDS of a TEMPLATE_TYPE_PARM and
BOUND_TEMPLATE_TEMPLATE_PARM are not fields at all;
instead TYPE_FIELDS is the TEMPLATE_PARM_INDEX. (Miraculously,
the code often worked even when we treated the index as a list
the compiler cannot handle that. Once the class is
defined, USING_DECLs are purged from TYPE_FIELDS; see
handle_using_decl. However, we make special efforts to
- make using-declarations in template classes work
- correctly. */
- if (CLASSTYPE_TEMPLATE_INFO (type)
- && !CLASSTYPE_USE_TEMPLATE (type)
- && !TREE_TYPE (field))
- ;
- else
+ make using-declarations in class templates and class
+ template partial specializations work correctly. */
+ if (!DECL_DEPENDENT_P (field))
continue;
}
if (DECL_NAME (field) == name
- && (!want_type
+ && (!want_type
|| TREE_CODE (field) == TYPE_DECL
|| DECL_CLASS_TEMPLATE_P (field)))
return field;
}
/* Return the FUNCTION_DECL, RECORD_TYPE, UNION_TYPE, or
- NAMESPACE_DECL corresponding to the innermost non-block scope. */
+ NAMESPACE_DECL corresponding to the innermost non-block scope. */
tree
current_scope (void)
context_for_name_lookup (tree decl)
{
/* [class.union]
-
+
For the purposes of name lookup, after the anonymous union
definition, the members of the anonymous union are considered to
have been defined in the scope in which the anonymous union is
- declared. */
+ declared. */
tree context = DECL_CONTEXT (decl);
while (context && TYPE_P (context) && ANON_AGGR_TYPE_P (context))
else
access = ak_public;
}
- else
+ else
{
/* First, check for an access-declaration that gives us more
access to the DECL. The CONST_DECL for an enumeration
if (DECL_LANG_SPECIFIC (decl) && !DECL_DISCRIMINATOR_P (decl))
{
tree decl_access = purpose_member (type, DECL_ACCESS (decl));
-
+
if (decl_access)
{
decl_access = TREE_VALUE (decl_access);
-
+
if (decl_access == access_public_node)
access = ak_public;
else if (decl_access == access_protected_node)
{
int i;
tree base_binfo;
- VEC (tree) *accesses;
-
+ VEC(tree,gc) *accesses;
+
/* Otherwise, scan our baseclasses, and pick the most favorable
access. */
accesses = BINFO_BASE_ACCESSES (binfo);
If a name can be reached by several paths through a multiple
inheritance graph, the access is that of the path that gives
- most access.
+ most access.
The algorithm we use is to make a post-order depth-first traversal
of the base-class hierarchy. As we come up the tree, we annotate
m as a member of N is protected, and the reference occurs in a
member or friend of class N, or in a member or friend of a
class P derived from N, where m as a member of P is private or
- protected.
+ protected.
Here DERIVED is a possible P and DECL is m. accessible_p will
iterate over various values of N, but the access to m in DERIVED
/* If m is inaccessible in DERIVED, then it's not a P. */
if (access == ak_none)
return 0;
-
+
/* [class.protected]
When a friend or a member function of a derived class references
tree t = binfo;
while (BINFO_INHERITANCE_CHAIN (t))
t = BINFO_INHERITANCE_CHAIN (t);
-
+
if (!DERIVED_FROM_P (derived, BINFO_TYPE (t)))
return 0;
}
if (TREE_CODE (scope) == FUNCTION_DECL
|| DECL_FUNCTION_TEMPLATE_P (scope))
{
- /* Perhaps this SCOPE is a member of a class which is a
- friend. */
+ /* Perhaps this SCOPE is a member of a class which is a
+ friend. */
if (DECL_CLASS_SCOPE_P (scope)
&& friend_accessible_p (DECL_CONTEXT (scope), decl, binfo))
return 1;
&& is_friend (BINFO_TYPE (binfo), scope))
return binfo;
}
-
+
return NULL_TREE;
}
CONSIDER_LOCAL is true, do consider special access the current
scope or friendship thereof we might have. */
-int
+int
accessible_p (tree type, tree decl, bool consider_local_p)
{
tree binfo;
/* In a template declaration, we cannot be sure whether the
particular specialization that is instantiated will be a friend
or not. Therefore, all access checks are deferred until
- instantiation. */
- if (processing_template_decl)
+ instantiation. However, PROCESSING_TEMPLATE_DECL is set in the
+ parameter list for a template (because we may see dependent types
+ in default arguments for template parameters), and access
+ checking should be performed in the outermost parameter list. */
+ if (processing_template_decl
+ && (!processing_template_parmlist || processing_template_decl > 1))
return 1;
if (!TYPE_P (type))
protected, or
--there exists a base class B of N that is accessible at the point
- of reference, and m is accessible when named in class B.
+ of reference, and m is accessible when named in class B.
We walk the base class hierarchy, checking these conditions. */
if (access == ak_public
|| (access == ak_protected && protected_ok))
return 1;
-
+
if (!consider_local_p)
return 0;
-
+
/* Walk the hierarchy again, looking for a base class that allows
access. */
return dfs_walk_once_accessible (binfo, /*friends=*/true,
/* Within the scope of a template class, you can refer to the to the
current specialization with the name of the template itself. For
example:
-
+
template <typename T> struct S { S* sp; }
Returns nonzero if DECL is such a declaration in a class TYPE. */
is_subobject_of_p (tree parent, tree binfo)
{
tree probe;
-
+
for (probe = parent; probe; probe = BINFO_INHERITANCE_CHAIN (probe))
{
if (probe == binfo)
/* If this is a dependent base, don't look in it. */
if (BINFO_DEPENDENT_BASE_P (binfo))
return NULL_TREE;
-
+
/* If this base class is hidden by the best-known value so far, we
don't need to look. */
if (lfi->rval_binfo && BINFO_INHERITANCE_CHAIN (binfo) == lfi->rval_binfo
nval = NULL_TREE;
if (!nval && CLASSTYPE_NESTED_UTDS (type) != NULL)
{
- binding_entry e = binding_table_find (CLASSTYPE_NESTED_UTDS (type),
- lfi->name);
+ binding_entry e = binding_table_find (CLASSTYPE_NESTED_UTDS (type),
+ lfi->name);
if (e != NULL)
nval = TYPE_MAIN_DECL (e->type);
- else
+ else
goto done;
}
}
/* You must name a template base class with a template-id. */
- if (!same_type_p (type, lfi->type)
+ if (!same_type_p (type, lfi->type)
&& template_self_reference_p (type, nval))
goto done;
hide the old one, we might have an ambiguity. */
if (lfi->rval_binfo
&& !is_subobject_of_p (lfi->rval_binfo, binfo))
-
+
{
if (nval == lfi->rval && shared_member_p (nval))
/* The two things are really the same. */
/* Add the new value. */
lfi->ambiguous = tree_cons (NULL_TREE, nval, lfi->ambiguous);
TREE_TYPE (lfi->ambiguous) = error_mark_node;
- lfi->errstr = "request for member `%D' is ambiguous";
+ lfi->errstr = "request for member %qD is ambiguous";
}
}
else
just return NULL_TREE. */
if (!protect && lfi.ambiguous)
return NULL_TREE;
-
- if (protect == 2)
+
+ if (protect == 2)
{
if (lfi.ambiguous)
return lfi.ambiguous;
{
error (errstr, name, type);
if (lfi.ambiguous)
- print_candidates (lfi.ambiguous);
+ print_candidates (lfi.ambiguous);
rval = error_mark_node;
}
- if (rval && is_overloaded_fn (rval))
+ if (rval && is_overloaded_fn (rval))
rval = build_baselink (rval_binfo, basetype_path, rval,
(IDENTIFIER_TYPENAME_P (name)
? TREE_TYPE (name): NULL_TREE));
lookup_field (tree xbasetype, tree name, int protect, bool want_type)
{
tree rval = lookup_member (xbasetype, name, protect, want_type);
-
+
/* Ignore functions, but propagate the ambiguity list. */
if (!error_operand_p (rval)
&& (rval && BASELINK_P (rval)))
{
int i;
tree fn;
- VEC(tree) *methods = CLASSTYPE_METHOD_VEC (class_type);
-
+ VEC(tree,gc) *methods = CLASSTYPE_METHOD_VEC (class_type);
+
for (i = CLASSTYPE_FIRST_CONVERSION_SLOT;
VEC_iterate (tree, methods, i, fn); ++i)
{
fn = OVL_CURRENT (fn);
if (!DECL_CONV_FN_P (fn))
break;
-
+
if (TREE_CODE (fn) == TEMPLATE_DECL)
/* All the templated conversion functions are on the same
slot, so remember it. */
int
lookup_fnfields_1 (tree type, tree name)
{
- VEC(tree) *method_vec;
+ VEC(tree,gc) *method_vec;
tree fn;
tree tmp;
size_t i;
-
+
if (!CLASS_TYPE_P (type))
return -1;
else if (name == ansi_assopname(NOP_EXPR)
&& CLASSTYPE_LAZY_ASSIGNMENT_OP (type))
lazily_declare_fn (sfk_assignment_operator, type);
+ else if ((name == dtor_identifier
+ || name == base_dtor_identifier
+ || name == complete_dtor_identifier
+ || name == deleting_dtor_identifier)
+ && CLASSTYPE_LAZY_DESTRUCTOR (type))
+ lazily_declare_fn (sfk_destructor, type);
}
method_vec = CLASSTYPE_METHOD_VEC (type);
`B', not `D'. This function makes that adjustment. */
tree
-adjust_result_of_qualified_name_lookup (tree decl,
+adjust_result_of_qualified_name_lookup (tree decl,
tree qualifying_scope,
tree context_class)
{
- if (context_class && CLASS_TYPE_P (qualifying_scope)
+ if (context_class && CLASS_TYPE_P (qualifying_scope)
&& DERIVED_FROM_P (qualifying_scope, context_class)
&& BASELINK_P (decl))
{
if (base)
{
BASELINK_ACCESS_BINFO (decl) = base;
- BASELINK_BINFO (decl)
+ BASELINK_BINFO (decl)
= lookup_base (base, BINFO_TYPE (BASELINK_BINFO (decl)),
ba_unique | ba_quiet,
NULL);
tree rval;
unsigned ix;
tree base_binfo;
-
+
/* Call the pre-order walking function. */
if (pre_fn)
{
gcc_assert (rval != dfs_skip_bases);
return rval;
}
-
+
return NULL_TREE;
}
tree rval;
unsigned ix;
tree base_binfo;
-
+
/* Call the pre-order walking function. */
if (pre_fn)
{
{
if (rval == dfs_skip_bases)
goto skip_bases;
-
+
return rval;
}
}
continue;
BINFO_MARKED (base_binfo) = 1;
}
-
+
rval = dfs_walk_once_r (base_binfo, pre_fn, post_fn, data);
if (rval)
return rval;
}
-
+
skip_bases:
/* Call the post-order walking function. */
if (post_fn)
gcc_assert (rval != dfs_skip_bases);
return rval;
}
-
+
return NULL_TREE;
}
/* Worker for dfs_walk_once. Recursively unmark the virtual base binfos of
BINFO. */
-
+
static void
dfs_unmark_r (tree binfo)
{
unsigned ix;
tree base_binfo;
-
+
/* Process the basetypes. */
for (ix = 0; BINFO_BASE_ITERATE (binfo, ix, base_binfo); ix++)
{
dfs_walk_once (tree binfo, tree (*pre_fn) (tree, void *),
tree (*post_fn) (tree, void *), void *data)
{
+ static int active = 0; /* We must not be called recursively. */
tree rval;
gcc_assert (pre_fn || post_fn);
-
+ gcc_assert (!active);
+ active++;
+
if (!CLASSTYPE_DIAMOND_SHAPED_P (BINFO_TYPE (binfo)))
/* We are not diamond shaped, and therefore cannot encounter the
same binfo twice. */
if (!BINFO_INHERITANCE_CHAIN (binfo))
{
/* We are at the top of the hierarchy, and can use the
- CLASSTYPE_VBASECLASSES list for unmarking the virtual
- bases. */
- VEC (tree) *vbases;
+ CLASSTYPE_VBASECLASSES list for unmarking the virtual
+ bases. */
+ VEC(tree,gc) *vbases;
unsigned ix;
tree base_binfo;
-
+
for (vbases = CLASSTYPE_VBASECLASSES (BINFO_TYPE (binfo)), ix = 0;
VEC_iterate (tree, vbases, ix, base_binfo); ix++)
BINFO_MARKED (base_binfo) = 0;
else
dfs_unmark_r (binfo);
}
+
+ active--;
+
return rval;
}
{
if (rval == dfs_skip_bases)
goto skip_bases;
-
+
return rval;
}
}
if (mark && BINFO_MARKED (base_binfo))
continue;
-
+
/* If the base is inherited via private or protected
- inheritance, then we can't see it, unless we are a friend of
- the current binfo. */
+ inheritance, then we can't see it, unless we are a friend of
+ the current binfo. */
if (BINFO_BASE_ACCESS (binfo, ix) != access_public_node)
{
tree scope;
if (!friends_p)
continue;
scope = current_scope ();
- if (!scope
+ if (!scope
|| TREE_CODE (scope) == NAMESPACE_DECL
|| !is_friend (BINFO_TYPE (binfo), scope))
continue;
if (rval)
return rval;
}
-
+
skip_bases:
/* Call the post-order walking function. */
if (post_fn)
gcc_assert (rval != dfs_skip_bases);
return rval;
}
-
+
return NULL_TREE;
}
bool diamond_shaped = CLASSTYPE_DIAMOND_SHAPED_P (BINFO_TYPE (binfo));
tree rval = dfs_walk_once_accessible_r (binfo, friends_p, diamond_shaped,
pre_fn, post_fn, data);
-
+
if (diamond_shaped)
{
if (!BINFO_INHERITANCE_CHAIN (binfo))
{
/* We are at the top of the hierarchy, and can use the
- CLASSTYPE_VBASECLASSES list for unmarking the virtual
- bases. */
- VEC (tree) *vbases;
+ CLASSTYPE_VBASECLASSES list for unmarking the virtual
+ bases. */
+ VEC(tree,gc) *vbases;
unsigned ix;
tree base_binfo;
-
+
for (vbases = CLASSTYPE_VBASECLASSES (BINFO_TYPE (binfo)), ix = 0;
VEC_iterate (tree, vbases, ix, base_binfo); ix++)
BINFO_MARKED (base_binfo) = 0;
/* Check that virtual overrider OVERRIDER is acceptable for base function
BASEFN. Issue diagnostic, and return zero, if unacceptable. */
-int
+static int
check_final_overrider (tree overrider, tree basefn)
{
tree over_type = TREE_TYPE (overrider);
{
/* Potentially covariant. */
unsigned base_quals, over_quals;
-
+
fail = !POINTER_TYPE_P (base_return);
if (!fail)
{
fail = cp_type_quals (base_return) != cp_type_quals (over_return);
-
+
base_return = TREE_TYPE (base_return);
over_return = TREE_TYPE (over_return);
}
if ((base_quals & over_quals) != over_quals)
fail = 1;
-
+
if (CLASS_TYPE_P (base_return) && CLASS_TYPE_P (over_return))
{
tree binfo = lookup_base (over_return, base_return,
fail = 2;
else
{
- cp_warning_at ("deprecated covariant return type for %q#D",
+ warning (0, "deprecated covariant return type for %q+#D",
overrider);
- cp_warning_at (" overriding %q#D", basefn);
+ warning (0, " overriding %q+#D", basefn);
}
}
else
{
if (fail == 1)
{
- cp_error_at ("invalid covariant return type for %q#D", overrider);
- cp_error_at (" overriding %q#D", basefn);
+ error ("invalid covariant return type for %q+#D", overrider);
+ error (" overriding %q+#D", basefn);
}
else
{
- cp_error_at ("conflicting return type specified for %q#D",
- overrider);
- cp_error_at (" overriding %q#D", basefn);
+ error ("conflicting return type specified for %q+#D", overrider);
+ error (" overriding %q+#D", basefn);
}
DECL_INVALID_OVERRIDER_P (overrider) = 1;
return 0;
}
-
+
/* Check throw specifier is at least as strict. */
if (!comp_except_specs (base_throw, over_throw, 0))
{
- cp_error_at ("looser throw specifier for %q#F", overrider);
- cp_error_at (" overriding %q#F", basefn);
+ error ("looser throw specifier for %q+#F", overrider);
+ error (" overriding %q+#F", basefn);
DECL_INVALID_OVERRIDER_P (overrider) = 1;
return 0;
}
-
+
return 1;
}
/* Given a class TYPE, and a function decl FNDECL, look for
virtual functions in TYPE's hierarchy which FNDECL overrides.
We do not look in TYPE itself, only its bases.
-
+
Returns nonzero, if we find any. Set FNDECL's DECL_VIRTUAL_P, if we
find that it overrides anything.
-
+
We check that every function which is overridden, is correctly
overridden. */
for (ix = 0; BINFO_BASE_ITERATE (binfo, ix, base_binfo); ix++)
{
tree basetype = BINFO_TYPE (base_binfo);
-
+
if (TYPE_POLYMORPHIC_P (basetype))
- found += look_for_overrides_r (basetype, fndecl);
+ found += look_for_overrides_r (basetype, fndecl);
}
return found;
}
if (ix >= 0)
{
tree fns = VEC_index (tree, CLASSTYPE_METHOD_VEC (type), ix);
-
+
for (; fns; fns = OVL_NEXT (fns))
- {
- tree fn = OVL_CURRENT (fns);
+ {
+ tree fn = OVL_CURRENT (fns);
- if (!DECL_VIRTUAL_P (fn))
- /* Not a virtual. */;
- else if (DECL_CONTEXT (fn) != type)
- /* Introduced with a using declaration. */;
+ if (!DECL_VIRTUAL_P (fn))
+ /* Not a virtual. */;
+ else if (DECL_CONTEXT (fn) != type)
+ /* Introduced with a using declaration. */;
else if (DECL_STATIC_FUNCTION_P (fndecl))
{
tree btypes = TYPE_ARG_TYPES (TREE_TYPE (fn));
tree dtypes = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
- if (compparms (TREE_CHAIN (btypes), dtypes))
+ if (compparms (TREE_CHAIN (btypes), dtypes))
return fn;
- }
- else if (same_signature_p (fndecl, fn))
+ }
+ else if (same_signature_p (fndecl, fn))
return fn;
}
}
{
/* A static member function cannot match an inherited
virtual member function. */
- cp_error_at ("%q#D cannot be declared", fndecl);
- cp_error_at (" since %q#D declared in base class", fn);
+ error ("%q+#D cannot be declared", fndecl);
+ error (" since %q+#D declared in base class", fn);
}
else
{
if (!BINFO_PRIMARY_P (binfo))
{
tree virtuals;
-
+
for (virtuals = BINFO_VIRTUALS (binfo);
virtuals;
virtuals = TREE_CHAIN (virtuals))
if (DECL_PURE_VIRTUAL_P (BV_FN (virtuals)))
- VEC_safe_push (tree, CLASSTYPE_PURE_VIRTUALS (type),
+ VEC_safe_push (tree, gc, CLASSTYPE_PURE_VIRTUALS (type),
BV_FN (virtuals));
}
/* We might have set this earlier in cp_finish_decl. */
TYPE_DECL_SUPPRESS_DEBUG (TYPE_MAIN_DECL (t)) = 0;
+ /* Always emit the information for each class every time. */
+ if (flag_emit_class_debug_always)
+ return;
+
/* If we already know how we're handling this class, handle debug info
the same way. */
if (CLASSTYPE_INTERFACE_KNOWN (t))
if (virtual_depth || virtualness)
{
/* In a virtual hierarchy, we could be hidden, or could hide a
- conversion function on the other_convs list. */
+ conversion function on the other_convs list. */
for (level = other_convs; level; level = TREE_CHAIN (level))
{
int we_hide_them;
int they_hide_us;
tree *prev, other;
-
+
if (!(virtual_depth || TREE_STATIC (level)))
/* Neither is morally virtual, so cannot hide each other. */
continue;
-
+
if (!TREE_VALUE (level))
/* They evaporated away already. */
continue;
if (!(we_hide_them || they_hide_us))
/* Neither is within the other, so no hiding can occur. */
continue;
-
+
for (prev = &TREE_VALUE (level), other = *prev; other;)
{
if (same_type_p (to_type, TREE_TYPE (other)))
{
tree t;
tree prev;
-
+
/* Remove the original other_convs portion from child_convs. */
for (prev = NULL, t = child_convs;
t != other_convs; prev = t, t = TREE_CHAIN (t))
continue;
-
+
if (prev)
TREE_CHAIN (prev) = NULL_TREE;
else
}
else
my_convs = child_convs;
-
+
return my_convs;
}
tree child_tpl_convs = NULL_TREE;
unsigned i;
tree base_binfo;
- VEC(tree) *method_vec = CLASSTYPE_METHOD_VEC (BINFO_TYPE (binfo));
+ VEC(tree,gc) *method_vec = CLASSTYPE_METHOD_VEC (BINFO_TYPE (binfo));
tree conv;
/* If we have no conversion operators, then don't look. */
if (!TYPE_HAS_CONVERSION (BINFO_TYPE (binfo)))
{
*convs = *tpl_convs = NULL_TREE;
-
+
return 0;
}
-
+
if (BINFO_VIRTUAL_P (binfo))
virtual_depth++;
-
+
/* First, locate the unhidden ones at this level. */
- for (i = CLASSTYPE_FIRST_CONVERSION_SLOT;
+ for (i = CLASSTYPE_FIRST_CONVERSION_SLOT;
VEC_iterate (tree, method_vec, i, conv);
++i)
{
{
tree tpl = OVL_CURRENT (tpls);
tree type = DECL_CONV_FN_TYPE (tpl);
-
+
if (check_hidden_convs (binfo, virtual_depth, virtualness,
type, parent_tpl_convs, other_tpl_convs))
{
if (!IDENTIFIER_MARKED (name))
{
tree type = DECL_CONV_FN_TYPE (cur);
-
+
if (check_hidden_convs (binfo, virtual_depth, virtualness,
type, parent_convs, other_convs))
{
if (virtual_depth)
TREE_STATIC (parent_convs) = 1;
}
-
+
if (my_tpl_convs)
{
parent_tpl_convs = tree_cons (binfo, my_tpl_convs, parent_tpl_convs);
if (virtual_depth)
- TREE_STATIC (parent_convs) = 1;
+ TREE_STATIC (parent_tpl_convs) = 1;
}
child_convs = other_convs;
child_tpl_convs = other_tpl_convs;
-
+
/* Now iterate over each base, looking for more conversions. */
for (i = 0; BINFO_BASE_ITERATE (binfo, i, base_binfo); i++)
{
child_convs, other_convs);
*tpl_convs = split_conversions (my_tpl_convs, parent_tpl_convs,
child_tpl_convs, other_tpl_convs);
-
+
return my_virtualness;
}
{
tree convs, tpl_convs;
tree list = NULL_TREE;
-
+
complete_type (type);
if (!TYPE_BINFO (type))
return NULL_TREE;
-
+
lookup_conversions_r (TYPE_BINFO (type), 0, 0,
NULL_TREE, NULL_TREE, NULL_TREE, NULL_TREE,
&convs, &tpl_convs);
-
+
/* Flatten the list-of-lists */
for (; convs; convs = TREE_CHAIN (convs))
{
list = probe;
}
}
-
+
for (; tpl_convs; tpl_convs = TREE_CHAIN (tpl_convs))
{
tree probe, next;
list = probe;
}
}
-
+
return list;
}
if (limit && !CLASSTYPE_VBASECLASSES (limit))
/* LIMIT has no virtual bases, so BINFO cannot be via one. */
return NULL_TREE;
-
+
for (; binfo && !SAME_BINFO_TYPE_P (BINFO_TYPE (binfo), limit);
binfo = BINFO_INHERITANCE_CHAIN (binfo))
{
copied_binfo (tree binfo, tree here)
{
tree result = NULL_TREE;
-
+
if (BINFO_VIRTUAL_P (binfo))
{
tree t;
tree cbinfo;
tree base_binfo;
int ix;
-
+
cbinfo = copied_binfo (BINFO_INHERITANCE_CHAIN (binfo), here);
for (ix = 0; BINFO_BASE_ITERATE (cbinfo, ix, base_binfo); ix++)
if (SAME_BINFO_TYPE_P (BINFO_TYPE (base_binfo), BINFO_TYPE (binfo)))
{
unsigned ix;
tree binfo;
- VEC (tree) *vbases;
-
+ VEC(tree,gc) *vbases;
+
for (vbases = CLASSTYPE_VBASECLASSES (t), ix = 0;
VEC_iterate (tree, vbases, ix, binfo); ix++)
if (SAME_BINFO_TYPE_P (BINFO_TYPE (binfo), base))
original_binfo (tree binfo, tree here)
{
tree result = NULL;
-
+
if (SAME_BINFO_TYPE_P (BINFO_TYPE (binfo), BINFO_TYPE (here)))
result = here;
else if (BINFO_VIRTUAL_P (binfo))
else if (BINFO_INHERITANCE_CHAIN (binfo))
{
tree base_binfos;
-
+
base_binfos = original_binfo (BINFO_INHERITANCE_CHAIN (binfo), here);
if (base_binfos)
{
int ix;
tree base_binfo;
-
+
for (ix = 0; (base_binfo = BINFO_BASE_BINFO (base_binfos, ix)); ix++)
if (SAME_BINFO_TYPE_P (BINFO_TYPE (base_binfo),
BINFO_TYPE (binfo)))
}
}
}
-
+
return result;
}