/* Functions related to invoking methods and overloaded functions.
- Copyright (C) 1987, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+ Copyright (C) 1987, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
Contributed by Michael Tiemann (tiemann@cygnus.com) and
hacked by Brendan Kehoe (brendan@cygnus.com).
#include "output.h"
#include "flags.h"
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
#include "obstack.h"
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
-extern void sorry ();
-
extern int inhibit_warnings;
extern tree ctor_label, dtor_label;
between an expected and the given type. */
static struct harshness_code convert_harshness PROTO((register tree, register tree, tree));
+static tree build_new_method_call PROTO((tree, tree, tree, tree, int));
+
+static int rank_for_ideal PROTO((struct candidate *,
+ struct candidate *));
+static int user_harshness PROTO((tree, tree));
+static int strictly_better PROTO((unsigned int, unsigned int));
+static struct candidate * ideal_candidate PROTO((struct candidate *,
+ int, int));
+static int may_be_remote PROTO((tree));
+static tree build_field_call PROTO((tree, tree, tree, tree));
+static tree find_scoped_type PROTO((tree, tree, tree));
+static void print_candidates PROTO((tree));
+static struct z_candidate * tourney PROTO((struct z_candidate *));
+static int joust PROTO((struct z_candidate *, struct z_candidate *));
+static int compare_qual PROTO((tree, tree));
+static int compare_ics PROTO((tree, tree));
+static tree build_over_call PROTO((tree, tree, tree, int));
+static tree convert_default_arg PROTO((tree, tree));
+static void enforce_access PROTO((tree, tree));
+static tree convert_like PROTO((tree, tree));
+static void op_error PROTO((enum tree_code, enum tree_code, tree, tree,
+ tree, char *));
+static tree build_object_call PROTO((tree, tree));
+static tree resolve_args PROTO((tree));
+static struct z_candidate * build_user_type_conversion_1
+ PROTO ((tree, tree, int));
+static void print_z_candidates PROTO((struct z_candidate *));
+static tree build_this PROTO((tree));
+static struct z_candidate * splice_viable PROTO((struct z_candidate *));
+static int any_viable PROTO((struct z_candidate *));
+static struct z_candidate * add_template_candidate
+ PROTO((struct z_candidate *, tree, tree, tree, tree, int));
+static struct z_candidate * add_template_conv_candidate
+ PROTO((struct z_candidate *, tree, tree, tree, tree));
+static struct z_candidate * add_builtin_candidates
+ PROTO((struct z_candidate *, enum tree_code, enum tree_code,
+ tree, tree *, int));
+static struct z_candidate * add_builtin_candidate
+ PROTO((struct z_candidate *, enum tree_code, enum tree_code,
+ tree, tree, tree, tree *, tree *, int));
+static int is_complete PROTO((tree));
+static struct z_candidate * build_builtin_candidate
+ PROTO((struct z_candidate *, tree, tree, tree, tree *, tree *,
+ int));
+static struct z_candidate * add_conv_candidate
+ PROTO((struct z_candidate *, tree, tree, tree));
+static struct z_candidate * add_function_candidate
+ PROTO((struct z_candidate *, tree, tree, int));
+static tree implicit_conversion PROTO((tree, tree, tree, int));
+static tree standard_conversion PROTO((tree, tree, tree));
+static tree reference_binding PROTO((tree, tree, tree, int));
+static tree strip_top_quals PROTO((tree));
+static tree non_reference PROTO((tree));
+static tree build_conv PROTO((enum tree_code, tree, tree));
+static void print_n_candidates PROTO((struct candidate *, int));
+static tree default_parm_conversions PROTO((tree, tree *));
+static int is_subseq PROTO((tree, tree));
#define EVIL_RETURN(ARG) ((ARG).code = EVIL_CODE, (ARG))
#define STD_RETURN(ARG) ((ARG).code = STD_CODE, (ARG))
/* Compare two candidates, argument by argument. */
-int
+static int
rank_for_ideal (x, y)
struct candidate *x, *y;
{
/* A clone of build_type_conversion for checking user-defined conversions in
overload resolution. */
-int
+static int
user_harshness (type, parmtype)
register tree type, parmtype;
{
static int
strictly_better (x, y)
- unsigned short x, y;
+ unsigned int x, y;
{
unsigned short xor;
functions. */
qsort (candidates, n_candidates, sizeof (struct candidate),
- rank_for_overload);
+ (int (*) PROTO((const void *, const void *))) rank_for_overload);
best_code = cp[-1].h.code;
/* If they're at least as good as each other, do an arg-by-arg check. */
break;
qsort (candidates+j, n_candidates-j, sizeof (struct candidate),
- rank_for_ideal);
+ (int (*) PROTO((const void *, const void *))) rank_for_ideal);
for (i = 0; i < len; i++)
{
if (cp[-1].harshness[i].code < cp[-2].harshness[i].code)
{
tree field, instance;
+ if (name == ctor_identifier || name == dtor_identifier)
+ return NULL_TREE;
+
if (instance_ptr == current_class_ptr)
{
/* Check to see if we really have a reference to an instance variable
if (TREE_CODE (TREE_TYPE (TREE_TYPE (instance))) == FUNCTION_TYPE)
return build_function_call (instance, parms);
else if (TREE_CODE (TREE_TYPE (TREE_TYPE (instance))) == METHOD_TYPE)
- return build_function_call (instance, tree_cons (NULL_TREE, current_class_ptr, parms));
+ return build_function_call (instance, expr_tree_cons (NULL_TREE, current_class_ptr, parms));
}
}
return NULL_TREE;
return NULL_TREE;
}
-tree
+static tree
find_scoped_type (type, inner_name, inner_types)
tree type, inner_name, inner_types;
{
if (TREE_CODE (type) == REFERENCE_TYPE)
type = TREE_TYPE (type);
+ if (TREE_CODE (basetype) == TREE_VEC)
+ {
+ binfo = basetype;
+ basetype = BINFO_TYPE (binfo);
+ }
+ else
+ binfo = NULL_TREE;
+
/* Destructors can be "called" for simple types; see 5.2.4 and 12.4 Note
that explicit ~int is caught in the parser; this deals with typedefs
and template parms. */
if (basetype != name && basetype != get_type_value (name))
cp_error ("qualified type `%T' does not match destructor name `~%T'",
basetype, name);
- return convert (void_type_node, exp);
+ return cp_convert (void_type_node, exp);
}
if (! is_aggr_type (basetype, 1))
return error_mark_node;
}
- if ((binfo = binfo_or_else (basetype, type)))
+ if (! binfo)
{
+ binfo = get_binfo (basetype, type, 1);
if (binfo == error_mark_node)
return error_mark_node;
+ if (! binfo)
+ error_not_base_type (basetype, type);
+ }
+
+ if (binfo)
+ {
if (TREE_CODE (exp) == INDIRECT_REF)
- decl = build_indirect_ref (convert_pointer_to (binfo,
- build_unary_op (ADDR_EXPR, exp, 0)), NULL_PTR);
+ decl = build_indirect_ref
+ (convert_pointer_to_real
+ (binfo, build_unary_op (ADDR_EXPR, exp, 0)), NULL_PTR);
else
decl = build_scoped_ref (exp, basetype);
return error_mark_node;
}
if (! TYPE_HAS_DESTRUCTOR (TREE_TYPE (decl)))
- return convert (void_type_node, exp);
+ return cp_convert (void_type_node, exp);
return build_delete (TREE_TYPE (decl), decl, integer_two_node,
LOOKUP_NORMAL|LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR,
{
cp_error ("destructor name `~%D' does not match type `%T' of expression",
name, basetype);
- return convert (void_type_node, instance);
+ return cp_convert (void_type_node, instance);
}
- if (! TYPE_HAS_DESTRUCTOR (basetype))
- return convert (void_type_node, instance);
+ if (! TYPE_HAS_DESTRUCTOR (complete_type (basetype)))
+ return cp_convert (void_type_node, instance);
instance = default_conversion (instance);
instance_ptr = build_unary_op (ADDR_EXPR, instance, 0);
return build_delete (build_pointer_type (basetype),
if (! IS_AGGR_TYPE (basetype))
{
non_aggr_error:
- if ((flags & LOOKUP_COMPLAIN) && TREE_CODE (basetype) != ERROR_MARK)
+ if ((flags & LOOKUP_COMPLAIN) && basetype != error_mark_node)
cp_error ("request for member `%D' in `%E', which is of non-aggregate type `%T'",
name, instance, basetype);
/* The MAIN_VARIANT of the type that `instance_ptr' winds up being. */
tree inst_ptr_basetype;
- static_call_context =
- (TREE_CODE (instance) == INDIRECT_REF
- && TREE_CODE (TREE_OPERAND (instance, 0)) == NOP_EXPR
- && TREE_OPERAND (TREE_OPERAND (instance, 0), 0) == error_mark_node);
+ static_call_context
+ = (TREE_CODE (instance) == INDIRECT_REF
+ && TREE_CODE (TREE_OPERAND (instance, 0)) == NOP_EXPR
+ && TREE_OPERAND (TREE_OPERAND (instance, 0), 0) == error_mark_node);
if (TREE_CODE (instance) == OFFSET_REF)
instance = resolve_offset_ref (instance);
basetype = inst_ptr_basetype;
else
{
- instance_ptr = convert (build_pointer_type (basetype), instance_ptr);
+ instance_ptr = cp_convert (build_pointer_type (basetype), instance_ptr);
if (instance_ptr == error_mark_node)
return error_mark_node;
}
if (basetype_path == NULL_TREE
&& IS_SIGNATURE (basetype))
basetype_path = TYPE_BINFO (basetype);
- else if (basetype_path == NULL_TREE ||
- BINFO_TYPE (basetype_path) != TYPE_MAIN_VARIANT (inst_ptr_basetype))
+ else if (basetype_path == NULL_TREE
+ || (BINFO_TYPE (basetype_path)
+ != TYPE_MAIN_VARIANT (inst_ptr_basetype)))
basetype_path = TYPE_BINFO (inst_ptr_basetype);
result = build_field_call (basetype_path, instance_ptr, name, parms);
of the signature pointer? */
constp = TYPE_READONLY (basetype);
volatilep = TYPE_VOLATILE (basetype);
- parms = tree_cons (NULL_TREE, instance_ptr, parms);
+ parms = expr_tree_cons (NULL_TREE, instance_ptr, parms);
}
else if (instance)
{
/* TREE_READONLY (instance) fails for references. */
constp = TYPE_READONLY (TREE_TYPE (TREE_TYPE (instance_ptr)));
volatilep = TYPE_VOLATILE (TREE_TYPE (TREE_TYPE (instance_ptr)));
- parms = tree_cons (NULL_TREE, instance_ptr, parms);
+ parms = expr_tree_cons (NULL_TREE, instance_ptr, parms);
}
else
{
&& ! (flags & LOOKUP_HAS_IN_CHARGE))
{
flags |= LOOKUP_HAS_IN_CHARGE;
- parms = tree_cons (NULL_TREE, integer_one_node, parms);
- parmtypes = tree_cons (NULL_TREE, integer_type_node, parmtypes);
+ parms = expr_tree_cons (NULL_TREE, integer_one_node, parms);
+ parmtypes = scratch_tree_cons (NULL_TREE, integer_type_node, parmtypes);
}
constp = 0;
volatilep = 0;
instance_ptr = build_int_2 (0, 0);
TREE_TYPE (instance_ptr) = build_pointer_type (basetype);
- parms = tree_cons (NULL_TREE, instance_ptr, parms);
+ parms = expr_tree_cons (NULL_TREE, instance_ptr, parms);
}
- parmtypes = tree_cons (NULL_TREE, TREE_TYPE (instance_ptr), parmtypes);
+ parmtypes = scratch_tree_cons (NULL_TREE, TREE_TYPE (instance_ptr), parmtypes);
if (last == NULL_TREE)
last = parmtypes;
tree tmplist;
flags |= LOOKUP_HAS_IN_CHARGE;
- tmplist = tree_cons (NULL_TREE, integer_zero_node,
+ tmplist = expr_tree_cons (NULL_TREE, integer_zero_node,
TREE_CHAIN (parms));
TREE_CHAIN (parms) = tmplist;
- tmplist = tree_cons (NULL_TREE, integer_type_node, TREE_CHAIN (parmtypes));
+ tmplist = scratch_tree_cons (NULL_TREE, integer_type_node, TREE_CHAIN (parmtypes));
TREE_CHAIN (parmtypes) = tmplist;
}
basetype = BINFO_TYPE (tmp);
else
my_friendly_abort (167);
- friend_parms = tree_cons (NULL_TREE, parm, TREE_CHAIN (parms));
+ friend_parms = expr_tree_cons (NULL_TREE, parm, TREE_CHAIN (parms));
cp->h_len = len;
cp->harshness = (struct harshness_code *)
#endif
ever_seen++;
if (pass > 0)
- found_fns = tree_cons (NULL_TREE, function, found_fns);
+ found_fns = scratch_tree_cons (NULL_TREE, function, found_fns);
/* Not looking for friends here. */
if (TREE_CODE (TREE_TYPE (function)) == FUNCTION_TYPE
instance_ptr = convert_pointer_to (basetype, instance_ptr);
instance = build_indirect_ref (instance_ptr, NULL_PTR);
}
- parms = tree_cons (NULL_TREE, instance_ptr,
+ parms = expr_tree_cons (NULL_TREE, instance_ptr,
convert_arguments (NULL_TREE, TREE_CHAIN (TYPE_ARG_TYPES (fntype)), TREE_CHAIN (parms), function, sub_flags));
}
else
&& TREE_OPERAND (TREE_OPERAND (instance_ptr, 0), 0) == instance)
;
/* The call to `convert_pointer_to' may return error_mark_node. */
- else if (TREE_CODE (instance_ptr) == ERROR_MARK)
+ else if (instance_ptr == error_mark_node)
return instance_ptr;
else if (instance == NULL_TREE
|| TREE_CODE (instance) != INDIRECT_REF
|| TREE_OPERAND (instance, 0) != instance_ptr)
instance = build_indirect_ref (instance_ptr, NULL_PTR);
}
- parms = tree_cons (NULL_TREE, instance_ptr,
+ parms = expr_tree_cons (NULL_TREE, instance_ptr,
convert_arguments (NULL_TREE, TREE_CHAIN (TYPE_ARG_TYPES (fntype)), TREE_CHAIN (parms), function, LOOKUP_NORMAL));
}
}
if (TREE_CODE (function) == TEMPLATE_DECL)
{
- int ntparms = TREE_VEC_LENGTH (DECL_TEMPLATE_PARMS (function));
- tree *targs = (tree *) alloca (sizeof (tree) * ntparms);
+ int ntparms = DECL_NTPARMS (function);
+ tree targs = make_scratch_vec (ntparms);
int i;
- i = type_unification (DECL_TEMPLATE_PARMS (function), targs,
+ i = type_unification (DECL_INNERMOST_TEMPLATE_PARMS (function),
+ &TREE_VEC_ELT (targs, 0),
TYPE_ARG_TYPES (TREE_TYPE (function)),
- parms, &template_cost, 0, 0);
+ parms, NULL_TREE, &template_cost, 0, 0);
if (i == 0)
{
function = instantiate_template (function, targs);
passed to calling function. */
cp->h_len = parmlength;
cp->harshness = (struct harshness_code *)
- oballoc ((parmlength + 1) * sizeof (struct harshness_code));
+ scratchalloc ((parmlength + 1) * sizeof (struct harshness_code));
compute_conversion_costs (function, parms, cp, parmlength);
return NULL_TREE;
if (flags & LOOKUP_COMPLAIN)
- report_type_mismatch (cp, parms, "function",
- decl_as_string (cp->function, 1));
+ report_type_mismatch (cp, parms, "function");
return error_mark_node;
}
#define USER_CONV_FN(NODE) TREE_OPERAND (NODE, 1)
-static struct z_candidate * build_user_type_conversion_1 ();
-static tree convert_like ();
-static tree build_over_call ();
-static struct z_candidate * tourney ();
-static void enforce_access ();
-
int
null_ptr_cst_p (t)
tree t;
{
if (t == null_node
- || integer_zerop (t) && INTEGRAL_TYPE_P (TREE_TYPE (t)))
- return 1;
- /* Remove this eventually. */
- if (! pedantic && TREE_TYPE (t) == ptr_type_node && integer_zerop (t))
+ || integer_zerop (t) && TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE)
return 1;
return 0;
}
-tree
+static tree
build_conv (code, type, from)
enum tree_code code;
tree type, from;
rank = STD_RANK;
break;
- case LVALUE_CONV:
case QUAL_CONV:
- case RVALUE_CONV:
if (rank < EXACT_RANK)
rank = EXACT_RANK;
return t;
}
-tree
+static tree
non_reference (t)
tree t;
{
return t;
}
-tree
+static tree
strip_top_quals (t)
tree t;
{
TO, if any. For proper handling of null pointer constants, you must
also pass the expression EXPR to convert from. */
-tree
+static tree
standard_conversion (to, from, expr)
tree to, from, expr;
{
Currently does not distinguish in the generated trees between binding to
an lvalue and a temporary. Should it? */
-tree
+static tree
reference_binding (rto, rfrom, expr, flags)
tree rto, rfrom, expr;
int flags;
int lvalue = 1;
tree to = TREE_TYPE (rto);
tree from = rfrom;
+ int related;
if (TREE_CODE (from) == REFERENCE_TYPE)
from = TREE_TYPE (from);
else if (! expr || ! real_lvalue_p (expr))
lvalue = 0;
- if (lvalue
+ related = (TYPE_MAIN_VARIANT (to) == TYPE_MAIN_VARIANT (from)
+ || (IS_AGGR_TYPE (to) && IS_AGGR_TYPE (from)
+ && DERIVED_FROM_P (to, from)));
+
+ if (lvalue && related
&& TYPE_READONLY (to) >= TYPE_READONLY (from)
&& TYPE_VOLATILE (to) >= TYPE_VOLATILE (from))
{
if (TYPE_MAIN_VARIANT (to) == TYPE_MAIN_VARIANT (from))
conv = build_conv (REF_BIND, rto, conv);
- else if (IS_AGGR_TYPE (to) && IS_AGGR_TYPE (from)
- && DERIVED_FROM_P (to, from))
+ else
{
conv = build_conv (REF_BIND, rto, conv);
ICS_STD_RANK (conv) = STD_RANK;
}
- else
- conv = NULL_TREE;
}
else
conv = NULL_TREE;
if (TREE_CODE (TREE_OPERAND (conv, 0)) == BASE_CONV)
TREE_OPERAND (conv, 0) = TREE_OPERAND (TREE_OPERAND (conv, 0), 0);
}
- if (conv && ! (TYPE_READONLY (to) && ! TYPE_VOLATILE (to)
- && (flags & LOOKUP_NO_TEMP_BIND) == 0))
+ if (conv
+ && ((! (TYPE_READONLY (to) && ! TYPE_VOLATILE (to)
+ && (flags & LOOKUP_NO_TEMP_BIND) == 0))
+ /* If T1 is reference-related to T2, cv1 must be the same
+ cv-qualification as, or greater cv-qualification than,
+ cv2; otherwise, the program is ill-formed. */
+ || (related
+ && (TYPE_READONLY (to) < TYPE_READONLY (from)
+ || TYPE_VOLATILE (to) < TYPE_VOLATILE (from)))))
ICS_BAD_FLAG (conv) = 1;
}
FLAGS are the usual overloading flags. Only LOOKUP_NO_CONVERSION is
significant. */
-tree
+static tree
implicit_conversion (to, from, expr, flags)
tree to, from, expr;
int flags;
if (conv)
;
- else if ((IS_AGGR_TYPE (non_reference (from))
+ else if (expr != NULL_TREE
+ && (IS_AGGR_TYPE (non_reference (from))
|| IS_AGGR_TYPE (non_reference (to)))
&& (flags & LOOKUP_NO_CONVERSION) == 0)
{
- if (TREE_CODE (to) == REFERENCE_TYPE
- && TYPE_READONLY (TREE_TYPE (to))
- && ! TYPE_VOLATILE (TREE_TYPE (to))
+ cand = build_user_type_conversion_1
+ (to, expr, LOOKUP_ONLYCONVERTING);
+ if (cand)
+ conv = cand->second_conv;
+ if ((! conv || ICS_BAD_FLAG (conv))
+ && TREE_CODE (to) == REFERENCE_TYPE
&& (flags & LOOKUP_NO_TEMP_BIND) == 0)
{
cand = build_user_type_conversion_1
(TYPE_MAIN_VARIANT (TREE_TYPE (to)), expr, LOOKUP_ONLYCONVERTING);
if (cand)
- conv = build_conv (REF_BIND, to, cand->second_conv);
- }
- else
- {
- cand = build_user_type_conversion_1
- (to, expr, LOOKUP_ONLYCONVERTING);
- if (cand)
- conv = cand->second_conv;
+ {
+ if (! TYPE_READONLY (TREE_TYPE (to))
+ || TYPE_VOLATILE (TREE_TYPE (to)))
+ ICS_BAD_FLAG (cand->second_conv) = 1;
+ if (!conv || (ICS_BAD_FLAG (conv)
+ > ICS_BAD_FLAG (cand->second_conv)))
+ conv = build_conv (REF_BIND, to, cand->second_conv);
+ }
}
}
}
len = list_length (argnode);
- convs = make_tree_vec (len);
+ convs = make_scratch_vec (len);
for (i = 0; i < len; ++i)
{
break;
}
- cand = (struct z_candidate *) oballoc (sizeof (struct z_candidate));
+ cand = (struct z_candidate *) scratchalloc (sizeof (struct z_candidate));
cand->fn = fn;
cand->convs = convs;
tree totype = TREE_TYPE (TREE_TYPE (fn));
tree parmlist = TYPE_ARG_TYPES (TREE_TYPE (totype));
int i, len = list_length (arglist) + 1;
- tree convs = make_tree_vec (len);
+ tree convs = make_scratch_vec (len);
tree parmnode = parmlist;
tree argnode = arglist;
int viable = 1;
break;
}
- cand = (struct z_candidate *) oballoc (sizeof (struct z_candidate));
+ cand = (struct z_candidate *) scratchalloc (sizeof (struct z_candidate));
cand->fn = fn;
cand->convs = convs;
types[0] = type1;
types[1] = type2;
- convs = make_tree_vec (args[2] ? 3 : (args[1] ? 2 : 1));
+ convs = make_scratch_vec (args[2] ? 3 : (args[1] ? 2 : 1));
for (i = 0; i < 2; ++i)
{
viable = 0;
}
- cand = (struct z_candidate *) oballoc (sizeof (struct z_candidate));
+ cand = (struct z_candidate *) scratchalloc (sizeof (struct z_candidate));
cand->fn = fnname;
cand->convs = convs;
return cand;
}
-int
+static int
is_complete (t)
tree t;
{
case POSTDECREMENT_EXPR:
args[1] = integer_zero_node;
type2 = integer_type_node;
+ break;
+ default:
+ break;
}
switch (code)
{
tree c1 = TREE_TYPE (type1);
tree c2 = (TYPE_PTRMEMFUNC_P (type2)
- ? TYPE_METHOD_BASETYPE (TYPE_PTRMEMFUNC_FN_TYPE (type2))
+ ? TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (type2)))
: TYPE_OFFSET_BASETYPE (TREE_TYPE (type2)));
if (IS_AGGR_TYPE (c1) && DERIVED_FROM_P (c2, c1)
break;
case COND_EXPR:
-#if 0
/* Kludge around broken overloading rules whereby
bool ? const char& : enum is ambiguous
(between int and const char&). */
- /* Not needed for compiles without -pedantic, since the rank compare
- in joust will pick the int promotion. Let's just leave this out
- for now. */
flags |= LOOKUP_NO_TEMP_BIND;
-#endif
/* Extension: Support ?: of enumeral type. Hopefully this will not
be an extension for long. */
if (code == COND_EXPR)
{
if (real_lvalue_p (args[i]))
- types[i] = tree_cons
+ types[i] = scratch_tree_cons
(NULL_TREE, build_reference_type (argtypes[i]), types[i]);
- types[i] = tree_cons
+ types[i] = scratch_tree_cons
(NULL_TREE, TYPE_MAIN_VARIANT (argtypes[i]), types[i]);
}
continue;
if (code == COND_EXPR && TREE_CODE (type) == REFERENCE_TYPE)
- types[i] = tree_cons (NULL_TREE, type, types[i]);
+ types[i] = scratch_tree_cons (NULL_TREE, type, types[i]);
type = non_reference (type);
if (i != 0 || ! ref1)
{
type = TYPE_MAIN_VARIANT (type_decays_to (type));
if (code == COND_EXPR && TREE_CODE (type) == ENUMERAL_TYPE)
- types[i] = tree_cons (NULL_TREE, type, types[i]);
+ types[i] = scratch_tree_cons (NULL_TREE, type, types[i]);
if (INTEGRAL_TYPE_P (type))
type = type_promotes_to (type);
}
if (! value_member (type, types[i]))
- types[i] = tree_cons (NULL_TREE, type, types[i]);
+ types[i] = scratch_tree_cons (NULL_TREE, type, types[i]);
}
}
else
{
if (code == COND_EXPR && real_lvalue_p (args[i]))
- types[i] = tree_cons
+ types[i] = scratch_tree_cons
(NULL_TREE, build_reference_type (argtypes[i]), types[i]);
type = non_reference (argtypes[i]);
if (i != 0 || ! ref1)
{
type = TYPE_MAIN_VARIANT (type_decays_to (type));
if (code == COND_EXPR && TREE_CODE (type) == ENUMERAL_TYPE)
- types[i] = tree_cons (NULL_TREE, type, types[i]);
+ types[i] = scratch_tree_cons (NULL_TREE, type, types[i]);
if (INTEGRAL_TYPE_P (type))
type = type_promotes_to (type);
}
- types[i] = tree_cons (NULL_TREE, type, types[i]);
+ types[i] = scratch_tree_cons (NULL_TREE, type, types[i]);
}
}
return candidates;
}
+/* If TMPL can be successfully instantiated as indicated by
+ EXPLICIT_TARGS and ARGLIST, adds the instantiation to CANDIDATES.
+
+ TMPL is the template. EXPLICIT_TARGS are any explicit template arguments.
+ ARGLIST is the arguments provided at the call-site. The RETURN_TYPE
+ is the desired type for conversion operators. FLAGS are as for
+ add_function_candidate. */
+
static struct z_candidate *
-add_template_candidate (candidates, tmpl, arglist, flags)
+add_template_candidate (candidates, tmpl, explicit_targs,
+ arglist, return_type, flags)
struct z_candidate *candidates;
- tree tmpl, arglist;
+ tree tmpl, explicit_targs, arglist, return_type;
int flags;
{
- int ntparms = TREE_VEC_LENGTH (DECL_TEMPLATE_PARMS (tmpl));
- tree *targs = (tree *) alloca (sizeof (tree) * ntparms);
+ int ntparms = DECL_NTPARMS (tmpl);
+ tree targs = make_scratch_vec (ntparms);
struct z_candidate *cand;
- int i, dummy;
+ int i;
tree fn;
- i = type_unification (DECL_TEMPLATE_PARMS (tmpl), targs,
- TYPE_ARG_TYPES (TREE_TYPE (tmpl)),
- arglist, &dummy, 0, 0);
+ i = fn_type_unification (tmpl, explicit_targs, targs, arglist,
+ return_type, 0);
+
if (i != 0)
return candidates;
return cand;
}
+
+static struct z_candidate *
+add_template_conv_candidate (candidates, tmpl, obj, arglist, return_type)
+ struct z_candidate *candidates;
+ tree tmpl, obj, arglist, return_type;
+{
+ int ntparms = DECL_NTPARMS (tmpl);
+ tree targs = make_scratch_vec (ntparms);
+ struct z_candidate *cand;
+ int i;
+ tree fn;
+
+ i = fn_type_unification (tmpl, NULL_TREE, targs, arglist, return_type, 0);
+
+ if (i != 0)
+ return candidates;
+
+ fn = instantiate_template (tmpl, targs);
+ if (fn == error_mark_node)
+ return candidates;
+
+ cand = add_conv_candidate (candidates, fn, obj, arglist);
+ cand->template = DECL_TEMPLATE_INFO (fn);
+ return cand;
+}
+
+
static int
any_viable (cands)
struct z_candidate *cands;
return cands;
}
-tree
+static tree
build_this (obj)
tree obj;
{
}
/* Returns the best overload candidate to perform the requested
- conversion. */
+ conversion. This function is used for three the overloading situations
+ described in [over.match.copy], [over.match.conv], and [over.match.ref].
+ If TOTYPE is a REFERENCE_TYPE, we're trying to find an lvalue binding as
+ per [dcl.init.ref], so we ignore temporary bindings. */
static struct z_candidate *
build_user_type_conversion_1 (totype, expr, flags)
tree fromtype = TREE_TYPE (expr);
tree ctors = NULL_TREE, convs = NULL_TREE, *p;
tree args;
+ tree templates = NULL_TREE;
if (IS_AGGR_TYPE (totype))
ctors = lookup_fnfields (TYPE_BINFO (totype), ctor_identifier, 0);
{
tree t = build_int_2 (0, 0);
TREE_TYPE (t) = build_pointer_type (totype);
- args = build_tree_list (NULL_TREE, expr);
+ args = build_scratch_list (NULL_TREE, expr);
if (TYPE_USES_VIRTUAL_BASECLASSES (totype))
- args = tree_cons (NULL_TREE, integer_one_node, args);
- args = tree_cons (NULL_TREE, t, args);
+ args = scratch_tree_cons (NULL_TREE, integer_one_node, args);
+ args = scratch_tree_cons (NULL_TREE, t, args);
ctors = TREE_VALUE (ctors);
}
if (DECL_NONCONVERTING_P (ctors))
continue;
- candidates = add_function_candidate (candidates, ctors, args, flags);
- candidates->second_conv = build1 (IDENTITY_CONV, totype, NULL_TREE);
- candidates->basetype_path = TYPE_BINFO (totype);
+ if (TREE_CODE (ctors) == TEMPLATE_DECL)
+ {
+ templates = scratch_tree_cons (NULL_TREE, ctors, templates);
+ candidates =
+ add_template_candidate (candidates, ctors,
+ NULL_TREE, args, NULL_TREE, flags);
+ }
+ else
+ candidates = add_function_candidate (candidates, ctors,
+ args, flags);
+
+ if (candidates)
+ {
+ candidates->second_conv = build1 (IDENTITY_CONV, totype, NULL_TREE);
+ candidates->basetype_path = TYPE_BINFO (totype);
+ }
}
if (convs)
- args = build_tree_list (NULL_TREE, build_this (expr));
+ args = build_scratch_list (NULL_TREE, build_this (expr));
for (; convs; convs = TREE_CHAIN (convs))
{
tree fn = TREE_VALUE (convs);
- tree ics = implicit_conversion
- (totype, TREE_TYPE (TREE_TYPE (fn)), 0, LOOKUP_NO_CONVERSION);
- if (ics)
+ int convflags = LOOKUP_NO_CONVERSION;
+ tree ics;
+
+ /* If we are called to convert to a reference type, we are trying to
+ find an lvalue binding, so don't even consider temporaries. If
+ we don't find an lvalue binding, the caller will try again to
+ look for a temporary binding. */
+ if (TREE_CODE (totype) == REFERENCE_TYPE)
+ convflags |= LOOKUP_NO_TEMP_BIND;
+
+ ics = implicit_conversion
+ (totype, TREE_TYPE (TREE_TYPE (fn)), 0, convflags);
+
+ if (TREE_CODE (totype) == REFERENCE_TYPE && ics && ICS_BAD_FLAG (ics))
+ /* ignore the near match. */;
+ else if (ics)
for (; fn; fn = DECL_CHAIN (fn))
{
- candidates = add_function_candidate (candidates, fn, args, flags);
- candidates->second_conv = ics;
- candidates->basetype_path = TREE_PURPOSE (convs);
- if (candidates->viable == 1 && ICS_BAD_FLAG (ics))
- candidates->viable = -1;
+ if (TREE_CODE (fn) == TEMPLATE_DECL)
+ {
+ templates = scratch_tree_cons (NULL_TREE, fn, templates);
+ candidates =
+ add_template_candidate (candidates, fn, NULL_TREE,
+ args, totype, flags);
+ }
+ else
+ candidates = add_function_candidate (candidates, fn,
+ args, flags);
+
+ if (candidates)
+ {
+ candidates->second_conv = ics;
+ candidates->basetype_path = TREE_PURPOSE (convs);
+ if (candidates->viable == 1 && ICS_BAD_FLAG (ics))
+ candidates->viable = -1;
+ }
}
}
}
candidates = splice_viable (candidates);
- cand = tourney (candidates, totype);
+ cand = tourney (candidates);
if (cand == 0)
{
for (p = &(cand->second_conv); TREE_CODE (*p) != IDENTITY_CONV; )
p = &(TREE_OPERAND (*p, 0));
+ /* Pedantically, normal function declarations are never considered
+ to refer to template instantiations, so we only do this with
+ -fguiding-decls. */
+ if (flag_guiding_decls && templates && ! cand->template
+ && !DECL_INITIAL (cand->fn)
+ && TREE_CODE (TREE_TYPE (cand->fn)) != METHOD_TYPE)
+ add_maybe_template (cand->fn, templates);
+
*p = build
(USER_CONV,
(DECL_CONSTRUCTOR_P (cand->fn)
? totype : non_reference (TREE_TYPE (TREE_TYPE (cand->fn)))),
- NULL_TREE, cand->fn, cand->convs, cand->basetype_path);
+ expr, cand->fn, cand->convs, cand->basetype_path);
ICS_USER_FLAG (cand->second_conv) = 1;
if (cand->viable == -1)
ICS_BAD_FLAG (cand->second_conv) = 1;
return NULL_TREE;
}
+/* Do any initial processing on the arguments to a function call. */
+
+static tree
+resolve_args (args)
+ tree args;
+{
+ tree t;
+ for (t = args; t; t = TREE_CHAIN (t))
+ {
+ if (TREE_VALUE (t) == error_mark_node)
+ return error_mark_node;
+ else if (TREE_CODE (TREE_TYPE (TREE_VALUE (t))) == VOID_TYPE)
+ {
+ error ("invalid use of void expression");
+ return error_mark_node;
+ }
+ else if (TREE_CODE (TREE_VALUE (t)) == OFFSET_REF)
+ TREE_VALUE (t) = resolve_offset_ref (TREE_VALUE (t));
+ }
+ return args;
+}
+
tree
-build_new_function_call (fn, args, obj)
- tree fn, args, obj;
+build_new_function_call (fn, args)
+ tree fn, args;
{
struct z_candidate *candidates = 0, *cand;
-
- if (obj == NULL_TREE && TREE_CODE (fn) == TREE_LIST)
+ tree explicit_targs = NULL_TREE;
+ int template_only = 0;
+
+ if (TREE_CODE (fn) == TEMPLATE_ID_EXPR)
+ {
+ explicit_targs = TREE_OPERAND (fn, 1);
+ fn = TREE_OPERAND (fn, 0);
+ template_only = 1;
+ }
+
+ if (really_overloaded_fn (fn))
{
tree t;
tree templates = NULL_TREE;
- for (t = args; t; t = TREE_CHAIN (t))
- if (TREE_VALUE (t) == error_mark_node)
- return error_mark_node;
-
+ args = resolve_args (args);
+
+ if (args == error_mark_node)
+ return error_mark_node;
+
for (t = TREE_VALUE (fn); t; t = DECL_CHAIN (t))
{
if (TREE_CODE (t) == TEMPLATE_DECL)
{
- templates = decl_tree_cons (NULL_TREE, t, templates);
+ templates = scratch_tree_cons (NULL_TREE, t, templates);
candidates = add_template_candidate
- (candidates, t, args, LOOKUP_NORMAL);
+ (candidates, t, explicit_targs, args, NULL_TREE,
+ LOOKUP_NORMAL);
}
- else
+ else if (! template_only)
candidates = add_function_candidate
(candidates, t, args, LOOKUP_NORMAL);
}
{
if (candidates && ! candidates->next)
return build_function_call (candidates->fn, args);
- else
- cp_error ("no matching function for call to `%D (%A)'",
- TREE_PURPOSE (fn), args);
+ cp_error ("no matching function for call to `%D (%A)'",
+ TREE_PURPOSE (fn), args);
+ if (candidates)
+ print_z_candidates (candidates);
return error_mark_node;
}
candidates = splice_viable (candidates);
- cand = tourney (candidates, NULL_TREE);
+ cand = tourney (candidates);
if (cand == 0)
{
return error_mark_node;
}
- /* Pedantically, it is ill-formed to define a function that could
- also be a template instantiation, but we won't implement that
- until things settle down. */
- if (templates && ! cand->template && ! DECL_INITIAL (cand->fn))
+ /* Pedantically, normal function declarations are never considered
+ to refer to template instantiations, so we only do this with
+ -fguiding-decls. */
+ if (flag_guiding_decls && templates && ! cand->template
+ && ! DECL_INITIAL (cand->fn))
add_maybe_template (cand->fn, templates);
return build_over_call (cand->fn, cand->convs, args, LOOKUP_NORMAL);
return build_function_call (fn, args);
}
-tree
+static tree
build_object_call (obj, args)
tree obj, args;
{
struct z_candidate *candidates = 0, *cand;
tree fns, convs, mem_args;
tree type = TREE_TYPE (obj);
+ tree templates = NULL_TREE;
fns = lookup_fnfields (TYPE_BINFO (type), ansi_opname [CALL_EXPR], 0);
+ args = resolve_args (args);
+
+ if (args == error_mark_node)
+ return error_mark_node;
+
if (fns)
{
tree fn = TREE_VALUE (fns);
- mem_args = tree_cons (NULL_TREE, build_this (obj), args);
+ mem_args = scratch_tree_cons (NULL_TREE, build_this (obj), args);
for (; fn; fn = DECL_CHAIN (fn))
{
- candidates = add_function_candidate
- (candidates, fn, mem_args, LOOKUP_NORMAL);
- candidates->basetype_path = TREE_PURPOSE (fns);
+ if (TREE_CODE (fn) == TEMPLATE_DECL)
+ {
+ templates = scratch_tree_cons (NULL_TREE, fn, templates);
+ candidates
+ = add_template_candidate (candidates, fn, NULL_TREE,
+ mem_args, NULL_TREE,
+ LOOKUP_NORMAL);
+ }
+ else
+ candidates = add_function_candidate
+ (candidates, fn, mem_args, LOOKUP_NORMAL);
+
+ if (candidates)
+ candidates->basetype_path = TREE_PURPOSE (fns);
}
}
&& TREE_CODE (TREE_TYPE (totype)) == FUNCTION_TYPE)
for (; fn; fn = DECL_CHAIN (fn))
{
- candidates = add_conv_candidate (candidates, fn, obj, args);
- candidates->basetype_path = TREE_PURPOSE (convs);
+ if (TREE_CODE (fn) == TEMPLATE_DECL)
+ {
+ templates = scratch_tree_cons (NULL_TREE, fn, templates);
+ candidates = add_template_conv_candidate (candidates,
+ fn,
+ obj,
+ args,
+ totype);
+ }
+ else
+ candidates = add_conv_candidate (candidates, fn, obj, args);
+
+ if (candidates)
+ candidates->basetype_path = TREE_PURPOSE (convs);
}
}
}
candidates = splice_viable (candidates);
- cand = tourney (candidates, NULL_TREE);
+ cand = tourney (candidates);
if (cand == 0)
{
tree fns, mem_arglist, arglist, fnname;
enum tree_code code2 = NOP_EXPR;
tree templates = NULL_TREE;
+ tree conv;
if (arg1 == error_mark_node
|| arg2 == error_mark_node
|| arg3 == error_mark_node)
return error_mark_node;
+ /* This can happen if a template takes all non-type parameters, e.g.
+ undeclared_template<1, 5, 72>a; */
+ if (code == LT_EXPR && TREE_CODE (arg1) == TEMPLATE_DECL)
+ {
+ cp_error ("`%D' must be declared before use", arg1);
+ return error_mark_node;
+ }
+
if (code == MODIFY_EXPR)
{
code2 = TREE_CODE (arg3);
{
tree rval;
- arglist = tree_cons (NULL_TREE, arg2, arg3);
+ arglist = scratch_tree_cons (NULL_TREE, arg2, arg3);
if (flags & LOOKUP_GLOBAL)
return build_new_function_call
- (lookup_name_nonclass (fnname), arglist, NULL_TREE);
+ (lookup_name_nonclass (fnname), arglist);
/* FIXME */
rval = build_method_call
return rval;
TREE_TYPE (rval) = arg1;
- TREE_CALLS_NEW (rval) = 1;
return rval;
}
if (flags & LOOKUP_GLOBAL)
return build_new_function_call
(lookup_name_nonclass (fnname),
- build_tree_list (NULL_TREE, arg1), NULL_TREE);
+ build_scratch_list (NULL_TREE, arg1));
- arglist = tree_cons (NULL_TREE, arg1, build_tree_list (NULL_TREE, arg2));
+ arglist = scratch_tree_cons (NULL_TREE, arg1, build_scratch_list (NULL_TREE, arg2));
arg1 = TREE_TYPE (arg1);
case CALL_EXPR:
return build_object_call (arg1, arg2);
+
+ default:
+ break;
}
/* The comma operator can have void args. */
if (code == COND_EXPR)
{
- if (TREE_CODE (TREE_TYPE (arg2)) == VOID_TYPE
+ if (arg2 == NULL_TREE
+ || TREE_CODE (TREE_TYPE (arg2)) == VOID_TYPE
|| TREE_CODE (TREE_TYPE (arg3)) == VOID_TYPE
|| (! IS_OVERLOAD_TYPE (TREE_TYPE (arg2))
&& ! IS_OVERLOAD_TYPE (TREE_TYPE (arg3))))
if (code == POSTINCREMENT_EXPR || code == POSTDECREMENT_EXPR)
arg2 = integer_zero_node;
- fns = lookup_name_nonclass (fnname);
- /* + Koenig lookup */
-
if (arg2 && arg3)
- arglist = tree_cons (NULL_TREE, arg1, tree_cons
- (NULL_TREE, arg2, build_tree_list (NULL_TREE, arg3)));
+ arglist = scratch_tree_cons (NULL_TREE, arg1, scratch_tree_cons
+ (NULL_TREE, arg2, build_scratch_list (NULL_TREE, arg3)));
else if (arg2)
- arglist = tree_cons (NULL_TREE, arg1, build_tree_list (NULL_TREE, arg2));
+ arglist = scratch_tree_cons (NULL_TREE, arg1, build_scratch_list (NULL_TREE, arg2));
else
- arglist = build_tree_list (NULL_TREE, arg1);
+ arglist = build_scratch_list (NULL_TREE, arg1);
+
+ fns = lookup_name_nonclass (fnname);
+ /* + Koenig lookup */
if (fns && TREE_CODE (fns) == TREE_LIST)
fns = TREE_VALUE (fns);
{
if (TREE_CODE (fns) == TEMPLATE_DECL)
{
- templates = decl_tree_cons (NULL_TREE, fns, templates);
- candidates = add_template_candidate
- (candidates, fns, arglist, flags);
+ templates = scratch_tree_cons (NULL_TREE, fns, templates);
+ candidates
+ = add_template_candidate (candidates, fns, NULL_TREE,
+ arglist, TREE_TYPE (fnname),
+ flags);
}
else
candidates = add_function_candidate (candidates, fns, arglist, flags);
if (fns)
{
tree fn = TREE_VALUE (fns);
- mem_arglist = tree_cons (NULL_TREE, build_this (arg1), TREE_CHAIN (arglist));
+ mem_arglist = scratch_tree_cons (NULL_TREE, build_this (arg1), TREE_CHAIN (arglist));
for (; fn; fn = DECL_CHAIN (fn))
{
+ tree this_arglist;
+
if (TREE_CODE (TREE_TYPE (fn)) == METHOD_TYPE)
- candidates = add_function_candidate
- (candidates, fn, mem_arglist, flags);
+ this_arglist = mem_arglist;
else
- candidates = add_function_candidate (candidates, fn, arglist, flags);
-
- candidates->basetype_path = TREE_PURPOSE (fns);
+ this_arglist = arglist;
+
+ if (TREE_CODE (fn) == TEMPLATE_DECL)
+ {
+ /* A member template. */
+ templates = scratch_tree_cons (NULL_TREE, fn, templates);
+ candidates
+ = add_template_candidate (candidates, fn, NULL_TREE,
+ this_arglist, TREE_TYPE (fnname),
+ flags);
+ }
+ else
+ candidates = add_function_candidate
+ (candidates, fn, this_arglist, flags);
+
+ if (candidates)
+ candidates->basetype_path = TREE_PURPOSE (fns);
}
}
case COMPOUND_EXPR:
case COMPONENT_REF:
return NULL_TREE;
+
+ default:
+ break;
}
if (flags & LOOKUP_COMPLAIN)
{
return error_mark_node;
}
candidates = splice_viable (candidates);
- cand = tourney (candidates, NULL_TREE);
+ cand = tourney (candidates);
if (cand == 0)
{
if (DECL_FUNCTION_MEMBER_P (cand->fn))
enforce_access (cand->basetype_path, cand->fn);
- /* Pedantically, it is ill-formed to define a function that could
- also be a template instantiation, but we won't implement that
- until things settle down. */
- if (templates && ! cand->template && ! DECL_INITIAL (cand->fn)
+ /* Pedantically, normal function declarations are never considered
+ to refer to template instantiations, so we only do this with
+ -fguiding-decls. */
+ if (flag_guiding_decls && templates && ! cand->template
+ && ! DECL_INITIAL (cand->fn)
&& TREE_CODE (TREE_TYPE (cand->fn)) != METHOD_TYPE)
add_maybe_template (cand->fn, templates);
cp_warning ("comparison between `%#T' and `%#T'",
TREE_TYPE (arg1), TREE_TYPE (arg2));
}
+ break;
+ default:
+ break;
}
- arg1 = convert_from_reference
- (convert_like (TREE_VEC_ELT (cand->convs, 0), arg1));
+ /* We need to strip any leading REF_BIND so that bitfields don't cause
+ errors. This should not remove any important conversions, because
+ builtins don't apply to class objects directly. */
+ conv = TREE_VEC_ELT (cand->convs, 0);
+ if (TREE_CODE (conv) == REF_BIND)
+ conv = TREE_OPERAND (conv, 0);
+ arg1 = convert_like (conv, arg1);
if (arg2)
arg2 = convert_like (TREE_VEC_ELT (cand->convs, 1), arg2);
if (arg3)
case POSTINCREMENT_EXPR:
case PREDECREMENT_EXPR:
case POSTDECREMENT_EXPR:
+ case REALPART_EXPR:
+ case IMAGPART_EXPR:
return build_unary_op (code, arg1, candidates != 0);
case ARRAY_REF:
}
}
+/* Build up a call to operator new. This has to be handled differently
+ from other operators in the way lookup is handled; first members are
+ considered, then globals. CODE is either NEW_EXPR or VEC_NEW_EXPR.
+ TYPE is the type to be created. ARGS are any new-placement args.
+ FLAGS are the usual overloading flags. */
+
+tree
+build_op_new_call (code, type, args, flags)
+ enum tree_code code;
+ tree type, args;
+ int flags;
+{
+ tree fnname = ansi_opname[code];
+
+ if (IS_AGGR_TYPE (type) && ! (flags & LOOKUP_GLOBAL)
+ && (TYPE_GETS_NEW (type) & (1 << (code == VEC_NEW_EXPR))))
+ {
+ tree dummy = build1 (NOP_EXPR, build_pointer_type (type),
+ error_mark_node);
+ dummy = build_indirect_ref (dummy, "new");
+ return build_method_call (dummy, fnname, args, NULL_TREE, flags);
+ }
+ else
+ return build_new_function_call (lookup_name_nonclass (fnname), args);
+}
+
+/* Build a call to operator delete. This has to be handled very specially,
+ because the restrictions on what signatures match are different from all
+ other call instances. For a normal delete, only a delete taking (void *)
+ or (void *, size_t) is accepted. For a placement delete, only an exact
+ match with the placement new is accepted.
+
+ CODE is either DELETE_EXPR or VEC_DELETE_EXPR.
+ ADDR is the pointer to be deleted. For placement delete, it is also
+ used to determine what the corresponding new looked like.
+ SIZE is the size of the memory block to be deleted.
+ FLAGS are the usual overloading flags. */
+
+tree
+build_op_delete_call (code, addr, size, flags)
+ enum tree_code code;
+ tree addr, size;
+ int flags;
+{
+ tree fn, fns, fnname, fntype, argtypes, args, type;
+ int placement;
+
+ if (addr == error_mark_node)
+ return error_mark_node;
+
+ type = TREE_TYPE (TREE_TYPE (addr));
+ fnname = ansi_opname[code];
+
+ if (IS_AGGR_TYPE (type) && ! (flags & LOOKUP_GLOBAL))
+ fns = lookup_fnfields (TYPE_BINFO (type), fnname, 0);
+ else
+ fns = NULL_TREE;
+
+ if (fns)
+ {
+ /* Build this up like build_offset_ref does. */
+ fns = build_tree_list (error_mark_node, fns);
+ TREE_TYPE (fns) = build_offset_type (type, unknown_type_node);
+ }
+ else
+ fns = lookup_name_nonclass (fnname);
+
+ /* We can recognize a placement delete because of LOOKUP_SPECULATIVELY;
+ if we are doing placement delete we do nothing if we don't find a
+ matching op delete. */
+ placement = !!(flags & LOOKUP_SPECULATIVELY);
+ if (placement)
+ {
+ /* If placement, we are coming from build_new, and we know that addr
+ is the allocation expression, so extract the info we need from it.
+ Obviously, if the build_new process changes this may have to
+ change as well. */
+
+ /* The NOP_EXPR. */
+ tree t = TREE_OPERAND (addr, 1);
+ /* The CALL_EXPR. */
+ t = TREE_OPERAND (t, 0);
+ /* The function. */
+ argtypes = TREE_OPERAND (TREE_OPERAND (t, 0), 0);
+ /* The second parm type. */
+ argtypes = TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (argtypes)));
+ /* The second argument. */
+ args = TREE_CHAIN (TREE_OPERAND (t, 1));
+
+ /* Pull the dummy var out of the TARGET_EXPR for use in our call. */
+ addr = TREE_OPERAND (addr, 0);
+ }
+ else
+ {
+ /* First try it without the size argument. */
+ argtypes = void_list_node;
+ args = NULL_TREE;
+ }
+
+ argtypes = tree_cons (NULL_TREE, ptr_type_node, argtypes);
+ fntype = build_function_type (void_type_node, argtypes);
+
+ /* Strip const and volatile from addr. */
+ if (type != TYPE_MAIN_VARIANT (type))
+ addr = cp_convert (build_pointer_type (TYPE_MAIN_VARIANT (type)), addr);
+
+ /* instantiate_type will always return a plain function; pretend it's
+ overloaded. */
+ if (TREE_CODE (fns) == FUNCTION_DECL)
+ fns = scratch_tree_cons (NULL_TREE, fns, NULL_TREE);
+
+ fn = instantiate_type (fntype, fns, 0);
+
+ if (fn != error_mark_node)
+ {
+ if (TREE_CODE (TREE_VALUE (fns)) == TREE_LIST)
+ /* Member functions. */
+ enforce_access (TREE_PURPOSE (TREE_VALUE (fns)), fn);
+ return build_function_call (fn, expr_tree_cons (NULL_TREE, addr, args));
+ }
+
+ if (placement)
+ return NULL_TREE;
+
+ /* Normal delete; now try to find a match including the size argument. */
+ argtypes = tree_cons (NULL_TREE, ptr_type_node,
+ tree_cons (NULL_TREE, sizetype, void_list_node));
+ fntype = build_function_type (void_type_node, argtypes);
+
+ fn = instantiate_type (fntype, fns, 0);
+
+ if (fn != error_mark_node)
+ return build_function_call
+ (fn, expr_tree_cons (NULL_TREE, addr,
+ build_expr_list (NULL_TREE, size)));
+
+ cp_error ("no suitable operator delete for `%T'", type);
+ return error_mark_node;
+}
+
+/* If the current scope isn't allowed to access FUNCTION along
+ BASETYPE_PATH, give an error. */
+
static void
enforce_access (basetype_path, function)
tree basetype_path, function;
tree t = build_int_2 (0, 0);
TREE_TYPE (t) = build_pointer_type (DECL_CONTEXT (fn));
- args = build_tree_list (NULL_TREE, expr);
+ args = build_scratch_list (NULL_TREE, expr);
if (TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (fn)))
- args = tree_cons (NULL_TREE, integer_one_node, args);
- args = tree_cons (NULL_TREE, t, args);
+ args = scratch_tree_cons (NULL_TREE, integer_one_node, args);
+ args = scratch_tree_cons (NULL_TREE, t, args);
}
else
args = build_this (expr);
/* Call build_user_type_conversion again for the error. */
return build_user_type_conversion
(TREE_TYPE (convs), TREE_OPERAND (convs, 0), LOOKUP_NORMAL);
+
+ default:
+ break;
};
expr = convert_like (TREE_OPERAND (convs, 0), expr);
error_mark_node);
case LVALUE_CONV:
return decay_conversion (expr);
+
+ default:
+ break;
}
- return cp_convert (TREE_TYPE (convs), expr, CONV_IMPLICIT,
- LOOKUP_NORMAL|LOOKUP_NO_CONVERSION);
+ return ocp_convert (TREE_TYPE (convs), expr, CONV_IMPLICIT,
+ LOOKUP_NORMAL|LOOKUP_NO_CONVERSION);
}
static tree
int is_method = 0;
if (args && TREE_CODE (args) != TREE_LIST)
- args = build_tree_list (NULL_TREE, args);
+ args = build_scratch_list (NULL_TREE, args);
arg = args;
/* The implicit parameters to a constructor are not considered by overload
resolution, and must be of the proper type. */
if (DECL_CONSTRUCTOR_P (fn))
{
- converted_args = tree_cons (NULL_TREE, TREE_VALUE (arg), converted_args);
+ converted_args = expr_tree_cons (NULL_TREE, TREE_VALUE (arg), converted_args);
arg = TREE_CHAIN (arg);
parm = TREE_CHAIN (parm);
if (TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (fn)))
{
- converted_args = tree_cons
+ converted_args = expr_tree_cons
(NULL_TREE, TREE_VALUE (arg), converted_args);
arg = TREE_CHAIN (arg);
parm = TREE_CHAIN (parm);
< TYPE_VOLATILE (TREE_TYPE (argtype)));
int dc = (TYPE_READONLY (TREE_TYPE (parmtype))
< TYPE_READONLY (TREE_TYPE (argtype)));
- char *p = (dv && dc ? "const and volatile" :
- dc ? "const" : dv ? "volatile" : "");
+ char *p = (dv && dc ? "const and volatile"
+ : dc ? "const" : dv ? "volatile" : "");
cp_pedwarn ("passing `%T' as `this' argument of `%#D' discards %s",
TREE_TYPE (argtype), fn, p);
}
- converted_args = tree_cons
+ converted_args = expr_tree_cons
(NULL_TREE, convert_force (TREE_VALUE (parm), TREE_VALUE (arg), CONV_C_CAST),
converted_args);
parm = TREE_CHAIN (parm);
is_method = 1;
}
- for (; conv = TREE_VEC_ELT (convs, i), arg && parm;
+ for (; arg && parm;
parm = TREE_CHAIN (parm), arg = TREE_CHAIN (arg), ++i)
{
tree type = TREE_VALUE (parm);
+ conv = TREE_VEC_ELT (convs, i);
if (ICS_BAD_FLAG (conv))
{
tree t = conv;
&& (TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)))
val = default_conversion (val);
#endif
- converted_args = tree_cons (NULL_TREE, val, converted_args);
+ converted_args = expr_tree_cons (NULL_TREE, val, converted_args);
}
/* Default arguments */
{
tree arg = TREE_PURPOSE (parm);
- if (PARM_DEFAULT_FROM_TEMPLATE (parm))
+ if (DECL_TEMPLATE_INFO (fn))
/* This came from a template. Instantiate the default arg here,
not in tsubst. */
- arg = tsubst_expr (arg, &TREE_VEC_ELT (DECL_TI_ARGS (fn), 0),
+ arg = tsubst_expr (arg, DECL_TI_ARGS (fn),
TREE_VEC_LENGTH (DECL_TI_ARGS (fn)), NULL_TREE);
- converted_args = tree_cons
+ converted_args = expr_tree_cons
(NULL_TREE, convert_default_arg (TREE_VALUE (parm), arg),
converted_args);
}
&& (TYPE_PRECISION (TREE_TYPE (val))
< TYPE_PRECISION (double_type_node)))
/* Convert `float' to `double'. */
- val = convert (double_type_node, val);
+ val = cp_convert (double_type_node, val);
else if (TYPE_LANG_SPECIFIC (TREE_TYPE (val))
&& ! TYPE_HAS_TRIVIAL_INIT_REF (TREE_TYPE (val)))
cp_warning ("cannot pass objects of type `%T' through `...'",
/* Convert `short' and `char' to full-size `int'. */
val = default_conversion (val);
- converted_args = tree_cons (NULL_TREE, val, converted_args);
+ converted_args = expr_tree_cons (NULL_TREE, val, converted_args);
}
converted_args = nreverse (converted_args);
&& TREE_VEC_LENGTH (convs) == 1
&& copy_args_p (fn))
{
- tree targ = NULL_TREE;
- arg = TREE_VALUE (TREE_CHAIN (converted_args));
+ tree targ;
+ arg = TREE_CHAIN (converted_args);
+ if (TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (fn)))
+ arg = TREE_CHAIN (arg);
+ arg = TREE_VALUE (arg);
/* Pull out the real argument, disregarding const-correctness. */
- if (TREE_CODE (arg) == ADDR_EXPR)
- {
- targ = TREE_OPERAND (arg, 0);
+ targ = arg;
+ while (TREE_CODE (targ) == NOP_EXPR
+ || TREE_CODE (targ) == NON_LVALUE_EXPR
+ || TREE_CODE (targ) == CONVERT_EXPR)
+ targ = TREE_OPERAND (targ, 0);
+ if (TREE_CODE (targ) == ADDR_EXPR)
+ {
+ targ = TREE_OPERAND (targ, 0);
if (! comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (arg))),
TYPE_MAIN_VARIANT (TREE_TYPE (targ)), 1))
targ = NULL_TREE;
}
+ else
+ targ = NULL_TREE;
if (targ)
arg = targ;
else
arg = build_indirect_ref (arg, 0);
+ /* [class.copy]: the copy constructor is implicitly defined even if
+ the implementation elided its use. */
+ if (TYPE_HAS_COMPLEX_INIT_REF (DECL_CONTEXT (fn)))
+ mark_used (fn);
+
/* If we're creating a temp and we already have one, don't create a
new one. If we're not creating a temp but we get one, use
INIT_EXPR to collapse the temp into our target. Otherwise, if the
fn = build_call (fn, TREE_TYPE (TREE_TYPE (TREE_TYPE (fn))), converted_args);
if (TREE_TYPE (fn) == void_type_node)
return fn;
+ fn = require_complete_type (fn);
if (IS_AGGR_TYPE (TREE_TYPE (fn)))
fn = build_cplus_new (TREE_TYPE (fn), fn);
- return convert_from_reference (require_complete_type (fn));
+ return convert_from_reference (fn);
}
-tree
+static tree
build_new_method_call (instance, name, args, basetype_path, flags)
tree instance, name, args, basetype_path;
int flags;
{
struct z_candidate *candidates = 0, *cand;
+ tree explicit_targs = NULL_TREE;
tree basetype, mem_args, fns, instance_ptr;
tree pretty_name;
+ tree user_args = args;
+ tree templates = NULL_TREE;
+ int template_only = 0;
- for (fns = args; fns; fns = TREE_CHAIN (fns))
- if (TREE_VALUE (fns) == error_mark_node)
- return error_mark_node;
+ if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
+ {
+ explicit_targs = TREE_OPERAND (name, 1);
+ name = TREE_OPERAND (name, 0);
+ if (TREE_CODE (name) == TEMPLATE_DECL)
+ name = DECL_NAME (name);
+ template_only = 1;
+ }
+
+ /* If there is an extra argument for controlling virtual bases,
+ remove it for error reporting. */
+ if (flags & LOOKUP_HAS_IN_CHARGE)
+ user_args = TREE_CHAIN (args);
+
+ args = resolve_args (args);
+
+ if (args == error_mark_node)
+ return error_mark_node;
if (instance == NULL_TREE)
basetype = BINFO_TYPE (basetype_path);
{
instance_ptr = build_this (instance);
- /* XXX this should be handled before we get here. */
- fns = build_field_call (basetype_path, instance_ptr, name, args);
- if (fns)
- return fns;
+ if (! template_only)
+ {
+ /* XXX this should be handled before we get here. */
+ fns = build_field_call (basetype_path, instance_ptr, name, args);
+ if (fns)
+ return fns;
+ }
}
else
{
TREE_TYPE (instance_ptr) = build_pointer_type (basetype);
}
- pretty_name =
- (name == ctor_identifier ? constructor_name_full (basetype) : name);
+ pretty_name
+ = (name == ctor_identifier ? constructor_name (basetype) : name);
fns = lookup_fnfields (basetype_path, name, 1);
&& ! (flags & LOOKUP_HAS_IN_CHARGE))
{
flags |= LOOKUP_HAS_IN_CHARGE;
- args = tree_cons (NULL_TREE, integer_one_node, args);
+ args = scratch_tree_cons (NULL_TREE, integer_one_node, args);
}
- mem_args = tree_cons (NULL_TREE, instance_ptr, args);
+ mem_args = scratch_tree_cons (NULL_TREE, instance_ptr, args);
for (; t; t = DECL_CHAIN (t))
{
+ tree this_arglist;
+
/* We can end up here for copy-init of same or base class. */
if (name == ctor_identifier
&& (flags & LOOKUP_ONLYCONVERTING)
&& DECL_NONCONVERTING_P (t))
continue;
if (TREE_CODE (TREE_TYPE (t)) == METHOD_TYPE)
- candidates = add_function_candidate
- (candidates, t, mem_args, flags);
+ this_arglist = mem_args;
else
- candidates = add_function_candidate (candidates, t, args, flags);
- candidates->basetype_path = TREE_PURPOSE (fns);
+ this_arglist = args;
+
+ if (TREE_CODE (t) == TEMPLATE_DECL)
+ {
+ /* A member template. */
+ templates = scratch_tree_cons (NULL_TREE, t, templates);
+ candidates =
+ add_template_candidate (candidates, t, explicit_targs,
+ this_arglist,
+ TREE_TYPE (name), flags);
+ }
+ else if (! template_only)
+ candidates = add_function_candidate (candidates, t,
+ this_arglist, flags);
+
+ if (candidates)
+ candidates->basetype_path = TREE_PURPOSE (fns);
}
}
if (flags & LOOKUP_SPECULATIVELY)
return NULL_TREE;
cp_error ("no matching function for call to `%T::%D (%A)%V'", basetype,
- pretty_name, args, TREE_TYPE (TREE_TYPE (instance_ptr)));
+ pretty_name, user_args, TREE_TYPE (TREE_TYPE (instance_ptr)));
print_z_candidates (candidates);
return error_mark_node;
}
candidates = splice_viable (candidates);
- cand = tourney (candidates, NULL_TREE);
+ cand = tourney (candidates);
if (cand == 0)
{
- cp_error ("call of overloaded `%D(%A)' is ambiguous", pretty_name, args);
+ cp_error ("call of overloaded `%D(%A)' is ambiguous", pretty_name,
+ user_args);
print_z_candidates (candidates);
return error_mark_node;
}
|| resolves_to_fixed_type_p (instance, 0)))
flags |= LOOKUP_NONVIRTUAL;
+ /* Pedantically, normal function declarations are never considered
+ to refer to template instantiations, so we only do this with
+ -fguiding-decls. */
+ if (flag_guiding_decls && templates && ! cand->template
+ && ! DECL_INITIAL (cand->fn))
+ add_maybe_template (cand->fn, templates);
+
return build_over_call
(cand->fn, cand->convs,
TREE_CODE (TREE_TYPE (cand->fn)) == METHOD_TYPE ? mem_args : args,
tree to1 = TREE_TYPE (ics1);
tree to2 = TREE_TYPE (ics2);
+ if (TYPE_PTRMEMFUNC_P (to1))
+ to1 = TYPE_PTRMEMFUNC_FN_TYPE (to1);
+ if (TYPE_PTRMEMFUNC_P (to2))
+ to2 = TYPE_PTRMEMFUNC_FN_TYPE (to2);
+
to1 = TREE_TYPE (to1);
to2 = TREE_TYPE (to2);
return 0;
}
+/* Determine whether standard conversion sequence ICS1 is a proper
+ subsequence of ICS2. We assume that a conversion of the same code
+ between the same types indicates a subsequence. */
+
+static int
+is_subseq (ics1, ics2)
+ tree ics1, ics2;
+{
+ /* Do not consider lvalue transformations here. */
+ if (TREE_CODE (ics2) == RVALUE_CONV
+ || TREE_CODE (ics2) == LVALUE_CONV)
+ return 0;
+
+ for (;; ics2 = TREE_OPERAND (ics2, 0))
+ {
+ if (TREE_CODE (ics2) == TREE_CODE (ics1)
+ && comptypes (TREE_TYPE (ics2), TREE_TYPE (ics1), 1)
+ && comptypes (TREE_TYPE (TREE_OPERAND (ics2, 0)),
+ TREE_TYPE (TREE_OPERAND (ics1, 0)), 1))
+ return 1;
+
+ if (TREE_CODE (ics2) == USER_CONV
+ || TREE_CODE (ics2) == AMBIG_CONV
+ || TREE_CODE (ics2) == IDENTITY_CONV)
+ return 0;
+ }
+}
+
/* Compare two implicit conversion sequences according to the rules set out in
[over.ics.rank]. Return values:
they were REF_BINDs. */
if (ICS_THIS_FLAG (ics1))
{
- ics1 = build_conv (REF_BIND, TREE_TYPE (ics1), main1);
- TREE_OPERAND (ics1, 0) = TREE_OPERAND (main1, 0);
- main1 = ics1;
+ tree t = main1;
+ if (TREE_CODE (t) == PTR_CONV)
+ t = TREE_OPERAND (t, 0);
+ t = build1 (IDENTITY_CONV, TREE_TYPE (TREE_TYPE (t)), NULL_TREE);
+ t = build_conv (REF_BIND, TREE_TYPE (ics1), t);
+ ICS_STD_RANK (t) = ICS_STD_RANK (main1);
+ main1 = ics1 = t;
}
if (ICS_THIS_FLAG (ics2))
{
- ics2 = build_conv (REF_BIND, TREE_TYPE (ics2), main2);
- TREE_OPERAND (ics2, 0) = TREE_OPERAND (main2, 0);
- main2 = ics2;
+ tree t = main2;
+ if (TREE_CODE (t) == PTR_CONV)
+ t = TREE_OPERAND (t, 0);
+ t = build1 (IDENTITY_CONV, TREE_TYPE (TREE_TYPE (t)), NULL_TREE);
+ t = build_conv (REF_BIND, TREE_TYPE (ics2), t);
+ ICS_STD_RANK (t) = ICS_STD_RANK (main2);
+ main2 = ics2 = t;
}
if (ICS_RANK (ics1) > ICS_RANK (ics2))
#endif
if (TREE_CODE (main1) != TREE_CODE (main2))
- return 0;
+ {
+ /* ...if S1 is a proper subsequence of S2 */
+ if (is_subseq (main1, main2))
+ return 1;
+ if (is_subseq (main2, main1))
+ return -1;
+ return 0;
+ }
if (TREE_CODE (main1) == PTR_CONV || TREE_CODE (main1) == PMEM_CONV
|| TREE_CODE (main1) == REF_BIND || TREE_CODE (main1) == BASE_CONV)
if (TYPE_PTRMEMFUNC_P (to1))
{
- to1 = TYPE_METHOD_BASETYPE (TYPE_PTRMEMFUNC_FN_TYPE (to1));
- from1 = TYPE_METHOD_BASETYPE (TYPE_PTRMEMFUNC_FN_TYPE (from1));
+ to1 = TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (to1)));
+ from1 = TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (from1)));
}
else if (TREE_CODE (main1) != BASE_CONV)
{
if (TYPE_PTRMEMFUNC_P (to2))
{
- to2 = TYPE_METHOD_BASETYPE (TYPE_PTRMEMFUNC_FN_TYPE (to2));
- from2 = TYPE_METHOD_BASETYPE (TYPE_PTRMEMFUNC_FN_TYPE (from2));
+ to2 = TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (to2)));
+ from2 = TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (from2)));
}
else if (TREE_CODE (main1) != BASE_CONV)
{
return 0;
}
+/* The source type for this standard conversion sequence. */
+
+static tree
+source_type (t)
+ tree t;
+{
+ for (;; t = TREE_OPERAND (t, 0))
+ {
+ if (TREE_CODE (t) == USER_CONV
+ || TREE_CODE (t) == AMBIG_CONV
+ || TREE_CODE (t) == IDENTITY_CONV)
+ return TREE_TYPE (t);
+ }
+ my_friendly_abort (1823);
+}
+
/* Compare two candidates for overloading as described in
[over.match.best]. Return values:
for (i = 0; i < len; ++i)
{
- int comp = compare_ics (TREE_VEC_ELT (cand1->convs, i+off1),
- TREE_VEC_ELT (cand2->convs, i+off2));
+ tree t1 = TREE_VEC_ELT (cand1->convs, i+off1);
+ tree t2 = TREE_VEC_ELT (cand2->convs, i+off2);
+ int comp = compare_ics (t1, t2);
if (comp != 0)
{
+#if 0 /* move this warning to tourney. */
+ if (warn_sign_promo
+ && ICS_RANK (t1) + ICS_RANK (t2) == STD_RANK + PROMO_RANK
+ && TREE_CODE (t1) == STD_CONV
+ && TREE_CODE (t2) == STD_CONV
+ && TREE_CODE (TREE_TYPE (t1)) == INTEGER_TYPE
+ && TREE_CODE (TREE_TYPE (t2)) == INTEGER_TYPE
+ && (TYPE_PRECISION (TREE_TYPE (t1))
+ == TYPE_PRECISION (TREE_TYPE (t2)))
+ && (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (t1, 0)))
+ || (TREE_CODE (TREE_TYPE (TREE_OPERAND (t1, 0)))
+ == ENUMERAL_TYPE)))
+ {
+ tree type = TREE_TYPE (TREE_OPERAND (t1, 0));
+ tree type1, type2;
+ if (comp > 0)
+ type1 = TREE_TYPE (t1), type2 = TREE_TYPE (t2);
+ else
+ type1 = TREE_TYPE (t2), type2 = TREE_TYPE (t1);
+
+ cp_warning ("passing `%T' chooses `%T' over `%T'",
+ type, type1, type2);
+ cp_warning (" in call to `%D'", DECL_NAME (cand1->fn));
+ }
+#endif
+
if (winner && comp != winner)
{
winner = 0;
}
}
+#if 0 /* move this warning to tourney. */
+ /* warn about confusing overload resolution */
+ if (winner && cand1->second_conv
+ && ! DECL_CONSTRUCTOR_P (cand1->fn)
+ && ! DECL_CONSTRUCTOR_P (cand2->fn))
+ {
+ int comp = compare_ics (cand1->second_conv, cand2->second_conv);
+ if (comp && comp != winner)
+ {
+ struct z_candidate *w, *l;
+ if (winner == 1)
+ w = cand1, l = cand2;
+ else
+ w = cand2, l = cand1;
+ cp_warning ("choosing `%D' over `%D'", w->fn, l->fn);
+ cp_warning (" for conversion from `%T' to `%T'",
+ TREE_TYPE (source_type (TREE_VEC_ELT (w->convs, 0))),
+ TREE_TYPE (w->second_conv));
+ cp_warning (" because conversion sequence for `this' argument is better");
+ }
+ }
+#endif
+
if (winner)
return winner;
break;
if (i == TREE_VEC_LENGTH (cand1->convs))
return 1;
-#if 0
+
/* Kludge around broken overloading rules whereby
- bool ? void *const & : void *const & is ambiguous. */
- /* Huh? Explain the problem better. */
+ Integer a, b; test ? a : b; is ambiguous, since there's a builtin
+ that takes references and another that takes values. */
if (cand1->fn == ansi_opname[COND_EXPR])
{
tree c1 = TREE_VEC_ELT (cand1->convs, 1);
return -1;
}
}
-#endif
}
tweak:
projects / gcc.git / blobdiff