/* Handle initialization things in C++.
Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 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. */
begin_init_stmts (tree *stmt_expr_p, tree *compound_stmt_p)
{
bool is_global = !building_stmt_tree ();
-
+
*stmt_expr_p = begin_stmt_expr ();
*compound_stmt_p = begin_compound_stmt (BCS_NO_SCOPE);
static tree
finish_init_stmts (bool is_global, tree stmt_expr, tree compound_stmt)
-{
+{
finish_compound_stmt (compound_stmt);
-
+
stmt_expr = finish_stmt_expr (stmt_expr, true);
gcc_assert (!building_stmt_tree () == is_global);
-
+
return stmt_expr;
}
{
if (!TYPE_CONTAINS_VPTR_P (BINFO_TYPE (binfo)))
return dfs_skip_bases;
-
+
if (!BINFO_PRIMARY_P (binfo) || BINFO_VIRTUAL_P (binfo))
{
tree base_ptr = TREE_VALUE ((tree) data);
To zero-initialization storage for an object of type T means:
-- if T is a scalar type, the storage is set to the value of zero
- converted to T.
+ converted to T.
-- if T is a non-union class type, the storage for each nonstatic
- data member and each base-class subobject is zero-initialized.
+ data member and each base-class subobject is zero-initialized.
-- if T is a union type, the storage for its first data member is
- zero-initialized.
+ zero-initialized.
-- if T is an array type, the storage for each element is
- zero-initialized.
+ zero-initialized.
-- if T is a reference type, no initialization is performed. */
else if (CLASS_TYPE_P (type))
{
tree field;
- tree inits;
+ VEC(constructor_elt,gc) *v = NULL;
- /* Build a constructor to contain the initializations. */
- init = build_constructor (type, NULL_TREE);
/* Iterate over the fields, building initializations. */
- inits = NULL_TREE;
for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field))
{
if (TREE_CODE (field) != FIELD_DECL)
over TYPE_FIELDs will result in correct initialization of
all of the subobjects. */
if (static_storage_p && !zero_init_p (TREE_TYPE (field)))
- inits = tree_cons (field,
- build_zero_init (TREE_TYPE (field),
- /*nelts=*/NULL_TREE,
- static_storage_p),
- inits);
+ {
+ tree value = build_zero_init (TREE_TYPE (field),
+ /*nelts=*/NULL_TREE,
+ static_storage_p);
+ CONSTRUCTOR_APPEND_ELT(v, field, value);
+ }
/* For unions, only the first field is initialized. */
if (TREE_CODE (type) == UNION_TYPE)
break;
}
- CONSTRUCTOR_ELTS (init) = nreverse (inits);
+
+ /* Build a constructor to contain the initializations. */
+ init = build_constructor (type, v);
}
else if (TREE_CODE (type) == ARRAY_TYPE)
{
- tree index;
tree max_index;
- tree inits;
+ VEC(constructor_elt,gc) *v = NULL;
- /* Build a constructor to contain the initializations. */
- init = build_constructor (type, NULL_TREE);
/* Iterate over the array elements, building initializations. */
- inits = NULL_TREE;
- max_index = nelts ? nelts : array_type_nelts (type);
+ if (nelts)
+ max_index = fold_build2 (MINUS_EXPR, TREE_TYPE (nelts),
+ nelts, integer_one_node);
+ else
+ max_index = array_type_nelts (type);
gcc_assert (TREE_CODE (max_index) == INTEGER_CST);
/* A zero-sized array, which is accepted as an extension, will
have an upper bound of -1. */
if (!tree_int_cst_equal (max_index, integer_minus_one_node))
- for (index = size_zero_node;
- !tree_int_cst_lt (max_index, index);
- index = size_binop (PLUS_EXPR, index, size_one_node))
- inits = tree_cons (index,
- build_zero_init (TREE_TYPE (type),
- /*nelts=*/NULL_TREE,
- static_storage_p),
- inits);
- CONSTRUCTOR_ELTS (init) = nreverse (inits);
+ {
+ constructor_elt *ce;
+
+ v = VEC_alloc (constructor_elt, gc, 1);
+ ce = VEC_quick_push (constructor_elt, v, NULL);
+
+ /* If this is a one element array, we just use a regular init. */
+ if (tree_int_cst_equal (size_zero_node, max_index))
+ ce->index = size_zero_node;
+ else
+ ce->index = build2 (RANGE_EXPR, sizetype, size_zero_node,
+ max_index);
+
+ ce->value = build_zero_init (TREE_TYPE (type),
+ /*nelts=*/NULL_TREE,
+ static_storage_p);
+ }
+
+ /* Build a constructor to contain the initializations. */
+ init = build_constructor (type, v);
}
else
gcc_assert (TREE_CODE (type) == REFERENCE_TYPE);
a class with a pointer-to-data member as a non-static data member
does not have TYPE_NEEDS_CONSTRUCTING set.) Therefore, we end up
passing non-PODs to build_zero_init below, which is contrary to
- the semantics quoted above from [dcl.init].
+ the semantics quoted above from [dcl.init].
It happens, however, that the behavior of the constructor the
standard says we should have generated would be precisely the
if (TYPE_NEEDS_CONSTRUCTING (type)
|| (nelts && TREE_CODE (nelts) != INTEGER_CST))
return NULL_TREE;
-
+
/* At this point, TYPE is either a POD class type, an array of POD
classes, or something even more innocuous. */
return build_zero_init (type, nelts, /*static_storage_p=*/false);
/* Effective C++ rule 12 requires that all data members be
initialized. */
if (warn_ecpp && !explicit && TREE_CODE (type) != ARRAY_TYPE)
- warning ("%J%qD should be initialized in the member initialization "
+ warning (0, "%J%qD should be initialized in the member initialization "
"list", current_function_decl, member);
if (init == void_type_node)
{
/* Initialization of one array from another. */
finish_expr_stmt (build_vec_init (decl, NULL_TREE, TREE_VALUE (init),
+ /*explicit_default_init_p=*/false,
/* from_array=*/1));
}
else
{
init = build_default_init (type, /*nelts=*/NULL_TREE);
if (TREE_CODE (type) == REFERENCE_TYPE)
- warning ("%Jdefault-initialization of %q#D, "
+ warning (0, "%Jdefault-initialization of %q#D, "
"which has reference type",
current_function_decl, member);
}
/* Returns a TREE_LIST containing (as the TREE_PURPOSE of each node) all
the FIELD_DECLs on the TYPE_FIELDS list for T, in reverse order. */
-static tree
+static tree
build_field_list (tree t, tree list, int *uses_unions_p)
{
tree fields;
/* Skip CONST_DECLs for enumeration constants and so forth. */
if (TREE_CODE (fields) != FIELD_DECL || DECL_ARTIFICIAL (fields))
continue;
-
+
/* Keep track of whether or not any fields are unions. */
if (TREE_CODE (TREE_TYPE (fields)) == UNION_TYPE)
*uses_unions_p = 1;
initialize the entire aggregate. */
list = tree_cons (fields, NULL_TREE, list);
/* And now add the fields in the anonymous aggregate. */
- list = build_field_list (TREE_TYPE (fields), list,
+ list = build_field_list (TREE_TYPE (fields), list,
uses_unions_p);
}
/* Add this field. */
tree base, binfo, base_binfo;
tree sorted_inits;
tree next_subobject;
- VEC (tree) *vbases;
+ VEC(tree,gc) *vbases;
int i;
int uses_unions_p;
TREE_VALUE will be the constructor arguments, or NULL if no
explicit initialization was provided. */
sorted_inits = NULL_TREE;
-
+
/* Process the virtual bases. */
for (vbases = CLASSTYPE_VBASECLASSES (t), i = 0;
VEC_iterate (tree, vbases, i, base); i++)
sorted_inits = tree_cons (base, NULL_TREE, sorted_inits);
-
+
/* Process the direct bases. */
for (binfo = TYPE_BINFO (t), i = 0;
BINFO_BASE_ITERATE (binfo, i, base_binfo); ++i)
subobject = TREE_PURPOSE (init);
/* If the explicit initializers are in sorted order, then
- SUBOBJECT will be NEXT_SUBOBJECT, or something following
+ SUBOBJECT will be NEXT_SUBOBJECT, or something following
it. */
- for (subobject_init = next_subobject;
- subobject_init;
+ for (subobject_init = next_subobject;
+ subobject_init;
subobject_init = TREE_CHAIN (subobject_init))
if (TREE_PURPOSE (subobject_init) == subobject)
break;
/* Issue a warning if the explicit initializer order does not
match that which will actually occur.
- ??? Are all these on the correct lines? */
+ ??? Are all these on the correct lines? */
if (warn_reorder && !subobject_init)
{
if (TREE_CODE (TREE_PURPOSE (next_subobject)) == FIELD_DECL)
- cp_warning_at ("%qD will be initialized after",
- TREE_PURPOSE (next_subobject));
+ warning (0, "%q+D will be initialized after",
+ TREE_PURPOSE (next_subobject));
else
- warning ("base %qT will be initialized after",
+ warning (0, "base %qT will be initialized after",
TREE_PURPOSE (next_subobject));
if (TREE_CODE (subobject) == FIELD_DECL)
- cp_warning_at (" %q#D", subobject);
+ warning (0, " %q+#D", subobject);
else
- warning (" base %qT", subobject);
- warning ("%J when initialized here", current_function_decl);
+ warning (0, " base %qT", subobject);
+ warning (0, "%J when initialized here", current_function_decl);
}
/* Look again, from the beginning of the list. */
while (TREE_PURPOSE (subobject_init) != subobject)
subobject_init = TREE_CHAIN (subobject_init);
}
-
+
/* It is invalid to initialize the same subobject more than
once. */
if (TREE_VALUE (subobject_init))
error ("%Jmultiple initializations given for %qD",
current_function_decl, subobject);
else
- error ("%Jmultiple initializations given for base %qT",
+ error ("%Jmultiple initializations given for base %qT",
current_function_decl, subobject);
}
int done;
/* Skip uninitialized members and base classes. */
- if (!TREE_VALUE (init)
+ if (!TREE_VALUE (init)
|| TREE_CODE (TREE_PURPOSE (init)) != FIELD_DECL)
continue;
/* See if this field is a member of a union, or a member of a
last_field_type = TYPE_CONTEXT (last_field_type);
}
-
+
/* If we've reached the outermost class, then we're
done. */
if (same_type_p (field_type, t))
void
emit_mem_initializers (tree mem_inits)
{
+ /* We will already have issued an error message about the fact that
+ the type is incomplete. */
+ if (!COMPLETE_TYPE_P (current_class_type))
+ return;
+
/* Sort the mem-initializers into the order in which the
initializations should be performed. */
mem_inits = sort_mem_initializers (current_class_type, mem_inits);
in_base_initializer = 1;
-
+
/* Initialize base classes. */
- while (mem_inits
+ while (mem_inits
&& TREE_CODE (TREE_PURPOSE (mem_inits)) != FIELD_DECL)
{
tree subobject = TREE_PURPOSE (mem_inits);
/* If these initializations are taking place in a copy
constructor, the base class should probably be explicitly
initialized. */
- if (extra_warnings && !arguments
+ if (extra_warnings && !arguments
&& DECL_COPY_CONSTRUCTOR_P (current_function_decl)
&& TYPE_NEEDS_CONSTRUCTING (BINFO_TYPE (subobject)))
- warning ("%Jbase class %q#T should be explicitly initialized in the "
+ warning (0, "%Jbase class %q#T should be explicitly initialized in the "
"copy constructor",
current_function_decl, BINFO_TYPE (subobject));
else
{
tree base_addr;
-
+
base_addr = build_base_path (PLUS_EXPR, current_class_ptr,
subobject, 1);
expand_aggr_init_1 (subobject, NULL_TREE,
- build_indirect_ref (base_addr, NULL),
+ build_indirect_ref (base_addr, NULL),
arguments,
LOOKUP_NORMAL);
expand_cleanup_for_base (subobject, NULL_TREE);
/* Initialize the vptrs. */
initialize_vtbl_ptrs (current_class_ptr);
-
+
/* Initialize the data members. */
while (mem_inits)
{
/* Compute the value to use, when there's a VTT. */
vtt_parm = current_vtt_parm;
- vtbl2 = build2 (PLUS_EXPR,
- TREE_TYPE (vtt_parm),
+ vtbl2 = build2 (PLUS_EXPR,
+ TREE_TYPE (vtt_parm),
vtt_parm,
vtt_index);
vtbl2 = build_indirect_ref (vtbl2, NULL);
/* The actual initializer is the VTT value only in the subobject
constructor. In maybe_clone_body we'll substitute NULL for
the vtt_parm in the case of the non-subobject constructor. */
- vtbl = build3 (COND_EXPR,
- TREE_TYPE (vtbl),
+ vtbl = build3 (COND_EXPR,
+ TREE_TYPE (vtbl),
build2 (EQ_EXPR, boolean_type_node,
current_in_charge_parm, integer_zero_node),
- vtbl2,
+ vtbl2,
vtbl);
}
return;
/* Call the destructor. */
- expr = build_special_member_call (current_class_ref,
+ expr = build_special_member_call (current_class_ref,
base_dtor_identifier,
NULL_TREE,
binfo,
LOOKUP_NORMAL | LOOKUP_NONVIRTUAL);
if (flag)
- expr = fold (build3 (COND_EXPR, void_type_node,
- c_common_truthvalue_conversion (flag),
- expr, integer_zero_node));
+ expr = fold_build3 (COND_EXPR, void_type_node,
+ c_common_truthvalue_conversion (flag),
+ expr, integer_zero_node);
finish_eh_cleanup (expr);
}
{
tree inner_if_stmt;
tree exp;
- tree flag;
+ tree flag;
/* If there are virtual base classes with destructors, we need to
emit cleanups to destroy them if an exception is thrown during
we already know where it is. */
exp = convert_to_base_statically (current_class_ref, vbase);
- expand_aggr_init_1 (vbase, current_class_ref, exp, arguments,
+ expand_aggr_init_1 (vbase, current_class_ref, exp, arguments,
LOOKUP_COMPLAIN);
finish_then_clause (inner_if_stmt);
finish_if_stmt (inner_if_stmt);
is erroneous. FIELD is the member we decided to initialize.
TYPE is the type for which the initialization is being performed.
FIELD must be a member of TYPE.
-
+
MEMBER_NAME is the name of the member. */
static int
virtual_binfo = binfo_for_vbase (basetype, current_class_type);
/* [class.base.init]
-
- If a mem-initializer-id is ambiguous because it designates
+
+ If a mem-initializer-id is ambiguous because it designates
both a direct non-virtual base class and an inherited virtual
base class, the mem-initializer is ill-formed. */
if (direct_binfo && virtual_binfo)
if (itype && cp_type_quals (itype) != TYPE_UNQUALIFIED)
itype = TREE_TYPE (init) = TYPE_MAIN_VARIANT (itype);
stmt_expr = build_vec_init (exp, NULL_TREE, init,
+ /*explicit_default_init_p=*/false,
itype && same_type_p (itype,
TREE_TYPE (exp)));
TREE_READONLY (exp) = was_const;
{
/* A brace-enclosed initializer for an aggregate. */
gcc_assert (CP_AGGREGATE_TYPE_P (type));
- init = digest_init (type, init, (tree *)NULL);
+ init = digest_init (type, init);
}
else
init = ocp_convert (type, init, CONV_IMPLICIT|CONV_FORCE_TEMP, flags);
if (type == NULL_TREE)
return error_mark_node;
-
+
/* Handle namespace names fully here. */
if (TREE_CODE (type) == NAMESPACE_DECL)
{
tree t = lookup_namespace_name (type, name);
if (t == error_mark_node)
- return t;
+ return t;
if (TREE_CODE (orig_name) == TEMPLATE_ID_EXPR)
- /* Reconstruct the TEMPLATE_ID_EXPR. */
+ /* Reconstruct the TEMPLATE_ID_EXPR. */
t = build2 (TEMPLATE_ID_EXPR, TREE_TYPE (t),
t, TREE_OPERAND (orig_name, 1));
if (! type_unknown_p (t))
else
{
member = lookup_member (basebinfo, name, 1, 0);
-
+
if (member == error_mark_node)
return error_mark_node;
}
return error_mark_node;
}
- if (processing_template_decl)
- {
- if (TREE_CODE (orig_name) == TEMPLATE_ID_EXPR)
- return build_min (SCOPE_REF, TREE_TYPE (member), type, orig_name);
- else
- return build_min (SCOPE_REF, TREE_TYPE (member), type, name);
- }
-
if (TREE_CODE (member) == TYPE_DECL)
{
TREE_USED (member) = 1;
expects to encounter OVERLOADs, not raw functions. */
t = ovl_cons (t, NULL_TREE);
- t = build2 (TEMPLATE_ID_EXPR, TREE_TYPE (t), t,
+ t = build2 (TEMPLATE_ID_EXPR, TREE_TYPE (t), t,
TREE_OPERAND (orig_name, 1));
t = build2 (OFFSET_REF, unknown_type_node, decl, t);
-
- PTRMEM_OK_P (t) = 1;
-
+
+ PTRMEM_OK_P (t) = 1;
+
return t;
}
PTRMEM_OK_P (member) = 1;
return build_unary_op (ADDR_EXPR, member, 0);
}
- error ("invalid use of non-static member function %qD",
+ error ("invalid use of non-static member function %qD",
TREE_OPERAND (member, 1));
return member;
}
return member;
}
- /* In member functions, the form `type::name' is no longer
- equivalent to `this->type::name', at least not until
- resolve_offset_ref. */
member = build2 (OFFSET_REF, TREE_TYPE (member), decl, member);
PTRMEM_OK_P (member) = 1;
return member;
}
-/* If DECL is a `const' declaration, and its value is a known
- constant, then return that value. */
+/* If DECL is a CONST_DECL, or a constant VAR_DECL initialized by
+ constant of integral or enumeration type, then return that value.
+ These are those variables permitted in constant expressions by
+ [5.19/1]. FIXME:If we did lazy folding, this could be localized. */
tree
-decl_constant_value (tree decl)
+integral_constant_value (tree decl)
{
- /* When we build a COND_EXPR, we don't know whether it will be used
- as an lvalue or as an rvalue. If it is an lvalue, it's not safe
- to replace the second and third operands with their
- initializers. So, we do that here. */
- if (TREE_CODE (decl) == COND_EXPR)
- {
- tree d1;
- tree d2;
-
- d1 = decl_constant_value (TREE_OPERAND (decl, 1));
- d2 = decl_constant_value (TREE_OPERAND (decl, 2));
-
- if (d1 != TREE_OPERAND (decl, 1) || d2 != TREE_OPERAND (decl, 2))
- return build3 (COND_EXPR,
- TREE_TYPE (decl),
- TREE_OPERAND (decl, 0), d1, d2);
+ while (TREE_CODE (decl) == CONST_DECL
+ || DECL_INTEGRAL_CONSTANT_VAR_P (decl))
+ {
+ tree init;
+ /* If DECL is a static data member in a template class, we must
+ instantiate it here. The initializer for the static data
+ member is not processed until needed; we need it now. */
+ mark_used (decl);
+ init = DECL_INITIAL (decl);
+ /* If we are currently processing a template, the
+ initializer for a static data member may not be dependent,
+ but it is not folded until instantiation time. */
+ if (init)
+ init = fold_non_dependent_expr (init);
+ if (!(init || init == error_mark_node)
+ || !TREE_TYPE (init)
+ || !INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (init)))
+ break;
+ decl = init;
}
+ return decl;
+}
+
+/* A more relaxed version of integral_constant_value, for which type
+ is not considered. This is used by the common C/C++ code, and not
+ directly by the C++ front end. */
- if (DECL_P (decl)
- && (/* Enumeration constants are constant. */
- TREE_CODE (decl) == CONST_DECL
+tree
+decl_constant_value (tree decl)
+{
+ if ((TREE_CODE (decl) == CONST_DECL
+ || (TREE_CODE (decl) == VAR_DECL
/* And so are variables with a 'const' type -- unless they
are also 'volatile'. */
- || CP_TYPE_CONST_NON_VOLATILE_P (TREE_TYPE (decl)))
- && TREE_CODE (decl) != PARM_DECL
+ && CP_TYPE_CONST_NON_VOLATILE_P (TREE_TYPE (decl))))
&& DECL_INITIAL (decl)
&& DECL_INITIAL (decl) != error_mark_node
- /* This is invalid if initial value is not constant.
- If it has either a function call, a memory reference,
- or a variable, then re-evaluating it could give different results. */
- && TREE_CONSTANT (DECL_INITIAL (decl))
- /* Check for cases where this is sub-optimal, even though valid. */
- && TREE_CODE (DECL_INITIAL (decl)) != CONSTRUCTOR)
+ /* This is invalid if initial value is not constant. If it has
+ either a function call, a memory reference, or a variable,
+ then re-evaluating it could give different results. */
+ && TREE_CONSTANT (DECL_INITIAL (decl)))
return DECL_INITIAL (decl);
+
return decl;
}
\f
explicitly wrote "::new" rather than just "new". */
tree
-build_new (tree placement, tree type, tree nelts, tree init,
+build_new (tree placement, tree type, tree nelts, tree init,
int use_global_new)
{
tree rval;
if (processing_template_decl)
{
- rval = build_min (NEW_EXPR, build_pointer_type (type),
+ rval = build_min (NEW_EXPR, build_pointer_type (type),
placement, type, nelts, init);
NEW_EXPR_USE_GLOBAL (rval) = use_global_new;
TREE_SIDE_EFFECTS (rval) = 1;
pedwarn ("size in array new must have integral type");
nelts = save_expr (cp_convert (sizetype, nelts));
if (nelts == integer_zero_node)
- warning ("zero size array reserves no space");
+ warning (0, "zero size array reserves no space");
}
/* ``A reference cannot be created by the new operator. A reference
tree placement, init;
tree size, rval;
/* True iff this is a call to "operator new[]" instead of just
- "operator new". */
+ "operator new". */
bool array_p = false;
/* True iff ARRAY_P is true and the bound of the array type is
not necessarily a compile time constant. For example, VLA_P is
true for "new int[f()]". */
bool vla_p = false;
- /* The type being allocated. If ARRAY_P is true, this will be an
+ /* The type being allocated. If ARRAY_P is true, this will be an
ARRAY_TYPE. */
tree full_type;
/* If ARRAY_P is true, the element type of the array. This is an
from ELT_TYPE for a multi-dimensional array; ELT_TYPE is never an
ARRAY_TYPE, but TYPE may be an ARRAY_TYPE. */
tree type;
- /* A pointer type pointing to to the FULL_TYPE. */
+ /* A pointer type pointing to the FULL_TYPE. */
tree full_pointer_type;
tree outer_nelts = NULL_TREE;
tree nelts = NULL_TREE;
outer_nelts = nelts;
array_p = true;
- /* ??? The middle-end will error on us for building a VLA outside a
+ /* ??? The middle-end will error on us for building a VLA outside a
function context. Methinks that's not it's purvey. So we'll do
our own VLA layout later. */
vla_p = true;
}
}
+ if (!complete_type_or_else (type, exp))
+ return error_mark_node;
+
/* If our base type is an array, then make sure we know how many elements
it has. */
for (elt_type = type;
TREE_CODE (elt_type) == ARRAY_TYPE;
elt_type = TREE_TYPE (elt_type))
- nelts = cp_build_binary_op (MULT_EXPR, nelts,
+ nelts = cp_build_binary_op (MULT_EXPR, nelts,
array_type_nelts_top (elt_type));
- if (!complete_type_or_else (elt_type, exp))
- return error_mark_node;
-
if (TREE_CODE (elt_type) == VOID_TYPE)
{
error ("invalid type %<void%> for new");
use_java_new = 1;
alloc_decl = NULL;
- if (!get_global_value_if_present (get_identifier (alloc_name),
+ if (!get_global_value_if_present (get_identifier (alloc_name),
&alloc_decl))
{
error ("call to Java constructor with %qs undefined", alloc_name);
fnname = ansi_opname (array_p ? VEC_NEW_EXPR : NEW_EXPR);
- if (!globally_qualified_p
+ if (!globally_qualified_p
&& CLASS_TYPE_P (elt_type)
&& (array_p
? TYPE_HAS_ARRAY_NEW_OPERATOR (elt_type)
args = tree_cons (NULL_TREE, size, placement);
/* Do name-lookup to find the appropriate operator. */
fns = lookup_fnfields (elt_type, fnname, /*protect=*/2);
+ if (fns == NULL_TREE)
+ {
+ error ("no suitable %qD found in class %qT", fnname, elt_type);
+ return error_mark_node;
+ }
if (TREE_CODE (fns) == TREE_LIST)
{
error ("request for member %qD is ambiguous", fnname);
else
cookie_size = NULL_TREE;
- alloc_call = build_operator_new_call (fnname, placement,
+ alloc_call = build_operator_new_call (fnname, placement,
&size, &cookie_size);
}
}
alloc_node = TARGET_EXPR_SLOT (alloc_expr);
/* Strip any COMPOUND_EXPRs from ALLOC_CALL. */
- while (TREE_CODE (alloc_call) == COMPOUND_EXPR)
+ while (TREE_CODE (alloc_call) == COMPOUND_EXPR)
alloc_call = TREE_OPERAND (alloc_call, 1);
alloc_fn = get_callee_fndecl (alloc_call);
gcc_assert (alloc_fn != NULL_TREE);
there is no explicit placement argument. If there is more than
one argument, or there are variable arguments, then this is a
placement allocation function. */
- placement_allocation_fn_p
- = (type_num_arguments (TREE_TYPE (alloc_fn)) > 1
+ placement_allocation_fn_p
+ = (type_num_arguments (TREE_TYPE (alloc_fn)) > 1
|| varargs_function_p (alloc_fn));
/* Preevaluate the placement args so that we don't reevaluate them for a
init_expr = build_indirect_ref (data_addr, NULL);
- if (init == void_zero_node)
- init = build_default_init (full_type, nelts);
- else if (init && array_p)
- pedwarn ("ISO C++ forbids initialization in array new");
-
if (array_p)
{
+ bool explicit_default_init_p = false;
+
+ if (init == void_zero_node)
+ {
+ init = NULL_TREE;
+ explicit_default_init_p = true;
+ }
+ else if (init)
+ pedwarn ("ISO C++ forbids initialization in array new");
+
init_expr
= build_vec_init (init_expr,
cp_build_binary_op (MINUS_EXPR, outer_nelts,
integer_one_node),
- init, /*from_array=*/0);
+ init,
+ explicit_default_init_p,
+ /*from_array=*/0);
/* An array initialization is stable because the initialization
of each element is a full-expression, so the temporaries don't
leak out. */
stable = true;
}
- else if (TYPE_NEEDS_CONSTRUCTING (type))
- {
- init_expr = build_special_member_call (init_expr,
- complete_ctor_identifier,
- init, elt_type,
- LOOKUP_NORMAL);
- stable = stabilize_init (init_expr, &init_preeval_expr);
- }
else
{
- /* We are processing something like `new int (10)', which
- means allocate an int, and initialize it with 10. */
-
- if (TREE_CODE (init) == TREE_LIST)
- init = build_x_compound_expr_from_list (init, "new initializer");
+ if (init == void_zero_node)
+ init = build_default_init (full_type, nelts);
+ if (TYPE_NEEDS_CONSTRUCTING (type))
+ {
+ init_expr = build_special_member_call (init_expr,
+ complete_ctor_identifier,
+ init, elt_type,
+ LOOKUP_NORMAL);
+ stable = stabilize_init (init_expr, &init_preeval_expr);
+ }
else
- gcc_assert (TREE_CODE (init) != CONSTRUCTOR
- || TREE_TYPE (init) != NULL_TREE);
-
- init_expr = build_modify_expr (init_expr, INIT_EXPR, init);
- stable = stabilize_init (init_expr, &init_preeval_expr);
+ {
+ /* We are processing something like `new int (10)', which
+ means allocate an int, and initialize it with 10. */
+
+ if (TREE_CODE (init) == TREE_LIST)
+ init = build_x_compound_expr_from_list (init,
+ "new initializer");
+ else
+ gcc_assert (TREE_CODE (init) != CONSTRUCTOR
+ || TREE_TYPE (init) != NULL_TREE);
+
+ init_expr = build_modify_expr (init_expr, INIT_EXPR, init);
+ stable = stabilize_init (init_expr, &init_preeval_expr);
+ }
}
if (init_expr == error_mark_node)
/* The Standard is unclear here, but the right thing to do
is to use the same method for finding deallocation
functions that we use for finding allocation functions. */
- cleanup = build_op_delete_call (dcode, alloc_node, size,
+ cleanup = build_op_delete_call (dcode, alloc_node, size,
globally_qualified_p,
- (placement_allocation_fn_p
+ (placement_allocation_fn_p
? alloc_call : NULL_TREE));
if (!cleanup)
build2 (COMPOUND_EXPR, void_type_node, init_expr,
end));
}
-
+
}
}
else
rval = build_nop (pointer_type, rval);
/* A new-expression is never an lvalue. */
- if (real_lvalue_p (rval))
- rval = build1 (NON_LVALUE_EXPR, TREE_TYPE (rval), rval);
+ rval = rvalue (rval);
return rval;
}
tbase = create_temporary_var (ptype);
tbase_init = build_modify_expr (tbase, NOP_EXPR,
- fold (build2 (PLUS_EXPR, ptype,
- base,
- virtual_size)));
+ fold_build2 (PLUS_EXPR, ptype,
+ base,
+ virtual_size));
DECL_REGISTER (tbase) = 1;
controller = build3 (BIND_EXPR, void_type_node, tbase,
NULL_TREE, NULL_TREE);
tree cookie_size;
cookie_size = targetm.cxx.get_cookie_size (type);
- base_tbd
+ base_tbd
= cp_convert (ptype,
cp_build_binary_op (MINUS_EXPR,
- cp_convert (string_type_node,
+ cp_convert (string_type_node,
base),
cookie_size));
/* True size with header. */
body = deallocate_expr;
else
body = build_compound_expr (body, deallocate_expr);
-
+
if (!body)
body = integer_zero_node;
-
+
/* Outermost wrapper: If pointer is null, punt. */
- body = fold (build3 (COND_EXPR, void_type_node,
- fold (build2 (NE_EXPR, boolean_type_node, base,
- convert (TREE_TYPE (base),
- integer_zero_node))),
- body, integer_zero_node));
+ body = fold_build3 (COND_EXPR, void_type_node,
+ fold_build2 (NE_EXPR, boolean_type_node, base,
+ convert (TREE_TYPE (base),
+ integer_zero_node)),
+ body, integer_zero_node);
body = build1 (NOP_EXPR, void_type_node, body);
if (controller)
return convert_to_void (body, /*implicit=*/NULL);
}
-/* Create an unnamed variable of the indicated TYPE. */
+/* Create an unnamed variable of the indicated TYPE. */
tree
create_temporary_var (tree type)
{
tree decl;
-
+
decl = build_decl (VAR_DECL, NULL_TREE, type);
TREE_USED (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
- DECL_SOURCE_LOCATION (decl) = input_location;
DECL_IGNORED_P (decl) = 1;
+ DECL_SOURCE_LOCATION (decl) = input_location;
DECL_CONTEXT (decl) = current_function_decl;
return decl;
decl = create_temporary_var (type);
add_decl_expr (decl);
-
+
finish_expr_stmt (build_modify_expr (decl, INIT_EXPR, init));
return decl;
MAXINDEX is the maximum index of the array (one less than the
number of elements). It is only used if
TYPE_DOMAIN (TREE_TYPE (BASE)) == NULL_TREE.
+
INIT is the (possibly NULL) initializer.
+ If EXPLICIT_DEFAULT_INIT_P is true, then INIT must be NULL. All
+ elements in the array are default-initialized.
+
FROM_ARRAY is 0 if we should init everything with INIT
(i.e., every element initialized from INIT).
FROM_ARRAY is 1 if we should index into INIT in parallel
but use assignment instead of initialization. */
tree
-build_vec_init (tree base, tree maxindex, tree init, int from_array)
+build_vec_init (tree base, tree maxindex, tree init,
+ bool explicit_default_init_p,
+ int from_array)
{
tree rval;
tree base2 = NULL_TREE;
tree atype = TREE_TYPE (base);
/* The type of an element in the array. */
tree type = TREE_TYPE (atype);
+ /* The element type reached after removing all outer array
+ types. */
+ tree inner_elt_type;
/* The type of a pointer to an element in the array. */
tree ptype;
tree stmt_expr;
tree try_block = NULL_TREE;
int num_initialized_elts = 0;
bool is_global;
-
+
if (TYPE_DOMAIN (atype))
maxindex = array_type_nelts (atype);
if (maxindex == NULL_TREE || maxindex == error_mark_node)
return error_mark_node;
+ if (explicit_default_init_p)
+ gcc_assert (!init);
+
+ inner_elt_type = strip_array_types (atype);
if (init
&& (from_array == 2
- ? (!CLASS_TYPE_P (type) || !TYPE_HAS_COMPLEX_ASSIGN_REF (type))
+ ? (!CLASS_TYPE_P (inner_elt_type)
+ || !TYPE_HAS_COMPLEX_ASSIGN_REF (inner_elt_type))
: !TYPE_NEEDS_CONSTRUCTING (type))
&& ((TREE_CODE (init) == CONSTRUCTOR
/* Don't do this if the CONSTRUCTOR might contain something
that might throw and require us to clean up. */
- && (CONSTRUCTOR_ELTS (init) == NULL_TREE
- || ! TYPE_HAS_NONTRIVIAL_DESTRUCTOR (target_type (type))))
+ && (VEC_empty (constructor_elt, CONSTRUCTOR_ELTS (init))
+ || ! TYPE_HAS_NONTRIVIAL_DESTRUCTOR (inner_elt_type)))
|| from_array))
{
/* Do non-default initialization of POD arrays resulting from
++t1;
}
} catch (...) {
- ... destroy elements that were constructed ...
+ ... destroy elements that were constructed ...
}
rval;
})
-
+
We can omit the try and catch blocks if we know that the
initialization will never throw an exception, or if the array
elements do not have destructors. We can omit the loop completely if
- the elements of the array do not have constructors.
+ the elements of the array do not have constructors.
We actually wrap the entire body of the above in a STMT_EXPR, for
- tidiness.
+ tidiness.
When copying from array to another, when the array elements have
only trivial copy constructors, we should use __builtin_memcpy
{
/* Do non-default initialization of non-POD arrays resulting from
brace-enclosed initializers. */
-
- tree elts;
+ unsigned HOST_WIDE_INT idx;
+ tree elt;
from_array = 0;
- for (elts = CONSTRUCTOR_ELTS (init); elts; elts = TREE_CHAIN (elts))
+ FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (init), idx, elt)
{
- tree elt = TREE_VALUE (elts);
tree baseref = build1 (INDIRECT_REF, type, base);
num_initialized_elts++;
{
/* If initializing one array from another, initialize element by
element. We rely upon the below calls the do argument
- checking. */
+ checking. */
if (init)
{
base2 = decay_conversion (init);
We do need to keep going if we're copying an array. */
if (from_array
- || (TYPE_NEEDS_CONSTRUCTING (type)
+ || ((TYPE_NEEDS_CONSTRUCTING (type) || explicit_default_init_p)
&& ! (host_integerp (maxindex, 0)
&& (num_initialized_elts
== tree_low_cst (maxindex, 0) + 1))))
we've already initialized all the elements. */
tree for_stmt;
tree elt_init;
+ tree to;
for_stmt = begin_for_stmt ();
finish_for_init_stmt (for_stmt);
finish_for_expr (build_unary_op (PREDECREMENT_EXPR, iterator, 0),
for_stmt);
+ to = build1 (INDIRECT_REF, type, base);
+
if (from_array)
{
- tree to = build1 (INDIRECT_REF, type, base);
tree from;
if (base2)
sorry
("cannot initialize multi-dimensional array with initializer");
elt_init = build_vec_init (build1 (INDIRECT_REF, type, base),
- 0, 0, 0);
+ 0, 0,
+ /*explicit_default_init_p=*/false,
+ 0);
}
+ else if (!TYPE_NEEDS_CONSTRUCTING (type))
+ elt_init = (build_modify_expr
+ (to, INIT_EXPR,
+ build_zero_init (type, size_one_node,
+ /*static_storage_p=*/false)));
else
- elt_init = build_aggr_init (build1 (INDIRECT_REF, type, base),
- init, 0);
-
+ elt_init = build_aggr_init (to, init, 0);
+
current_stmt_tree ()->stmts_are_full_exprs_p = 1;
finish_expr_stmt (elt_init);
current_stmt_tree ()->stmts_are_full_exprs_p = 0;
/* Flatten multi-dimensional array since build_vec_delete only
expects one-dimensional array. */
if (TREE_CODE (type) == ARRAY_TYPE)
- {
- m = cp_build_binary_op (MULT_EXPR, m,
- array_type_nelts_total (type));
- type = strip_array_types (type);
- }
+ m = cp_build_binary_op (MULT_EXPR, m,
+ array_type_nelts_total (type));
finish_cleanup_try_block (try_block);
- e = build_vec_delete_1 (rval, m, type, sfk_base_destructor,
+ e = build_vec_delete_1 (rval, m,
+ inner_elt_type, sfk_base_destructor,
/*use_global_delete=*/0);
finish_cleanup (e, try_block);
}
atype = build_pointer_type (atype);
stmt_expr = build1 (NOP_EXPR, atype, stmt_expr);
stmt_expr = build_indirect_ref (stmt_expr, NULL);
-
+
current_stmt_tree ()->stmts_are_full_exprs_p = destroy_temps;
return stmt_expr;
}
int use_vec_delete = !!(which_delete & 2);
enum tree_code code = use_vec_delete ? VEC_DELETE_EXPR : DELETE_EXPR;
- return build_op_delete_call (code, addr, virtual_size, use_global_delete,
+ return build_op_delete_call (code, addr, virtual_size, use_global_delete,
NULL_TREE);
}
default:
gcc_unreachable ();
}
-
- exp = convert_from_reference (exp);
fn = lookup_fnfields (TREE_TYPE (exp), name, /*protect=*/2);
- return build_new_method_call (exp, fn,
+ return build_new_method_call (exp, fn,
/*args=*/NULL_TREE,
/*conversion_path=*/NULL_TREE,
flags);
complete_type (type);
if (!COMPLETE_TYPE_P (type))
{
- warning ("possible problem detected in invocation of "
+ warning (0, "possible problem detected in invocation of "
"delete operator:");
cxx_incomplete_type_diagnostic (addr, type, 1);
inform ("neither the destructor nor the class-specific "
else if (TREE_CODE (type) == ARRAY_TYPE)
{
handle_array:
-
+
if (TYPE_DOMAIN (type) == NULL_TREE)
{
error ("unknown array size in delete");
tree do_delete = NULL_TREE;
tree ifexp;
- gcc_assert (TYPE_HAS_DESTRUCTOR (type));
+ if (CLASSTYPE_LAZY_DESTRUCTOR (type))
+ lazily_declare_fn (sfk_destructor, type);
/* For `::delete x', we must not use the deleting destructor
since then we would not be sure to get the global `operator
int i;
tree member;
tree expr;
- VEC (tree) *vbases;
+ VEC(tree,gc) *vbases;
/* Run destructors for all virtual baseclasses. */
if (CLASSTYPE_VBASECLASSES (current_class_type))
{
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (BINFO_TYPE (base_binfo)))
{
- expr = build_special_member_call (current_class_ref,
+ expr = build_special_member_call (current_class_ref,
base_dtor_identifier,
NULL_TREE,
base_binfo,
- (LOOKUP_NORMAL
+ (LOOKUP_NORMAL
| LOOKUP_NONVIRTUAL));
expr = build3 (COND_EXPR, void_type_node, cond,
expr, void_zero_node);
|| BINFO_VIRTUAL_P (base_binfo))
continue;
- expr = build_special_member_call (current_class_ref,
+ expr = build_special_member_call (current_class_ref,
base_dtor_identifier,
- NULL_TREE, base_binfo,
+ NULL_TREE, base_binfo,
LOOKUP_NORMAL | LOOKUP_NONVIRTUAL);
finish_decl_cleanup (NULL_TREE, expr);
}
continue;
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TREE_TYPE (member)))
{
- tree this_member = (build_class_member_access_expr
- (current_class_ref, member,
+ tree this_member = (build_class_member_access_expr
+ (current_class_ref, member,
/*access_path=*/NULL_TREE,
/*preserve_reference=*/false));
tree this_type = TREE_TYPE (member);
}
}
-/* For type TYPE, delete the virtual baseclass objects of DECL. */
-
-tree
-build_vbase_delete (tree type, tree decl)
-{
- unsigned ix;
- tree binfo;
- tree result;
- VEC (tree) *vbases;
- tree addr = build_unary_op (ADDR_EXPR, decl, 0);
-
- gcc_assert (addr != error_mark_node);
-
- result = convert_to_void (integer_zero_node, NULL);
- for (vbases = CLASSTYPE_VBASECLASSES (type), ix = 0;
- VEC_iterate (tree, vbases, ix, binfo); ix++)
- {
- tree base_addr = convert_force
- (build_pointer_type (BINFO_TYPE (binfo)), addr, 0);
- tree base_delete = build_delete
- (TREE_TYPE (base_addr), base_addr, sfk_base_destructor,
- LOOKUP_NORMAL|LOOKUP_DESTRUCTOR, 0);
-
- result = build_compound_expr (result, base_delete);
- }
- return result;
-}
-
/* Build a C++ vector delete expression.
MAXINDEX is the number of elements to be deleted.
ELT_SIZE is the nominal size of each element in the vector.
projects / gcc.git / blobdiff