static conversion *conditional_conversion (tree, tree);
static char *name_as_c_string (tree, tree, bool *);
static tree prep_operand (tree);
-static void add_candidates (tree, const VEC(tree,gc) *, tree, bool, tree, tree,
- int, struct z_candidate **);
+static void add_candidates (tree, tree, const VEC(tree,gc) *, tree, tree, bool,
+ tree, tree, int, struct z_candidate **);
static conversion *merge_conversion_sequences (conversion *, conversion *);
static bool magic_varargs_p (tree);
static tree build_temp (tree, tree, int, diagnostic_t *);
/* [conv.ptr]
A null pointer constant is an integral constant expression
- (_expr.const_) rvalue of integer type that evaluates to zero. */
+ (_expr.const_) rvalue of integer type that evaluates to zero or
+ an rvalue of type std::nullptr_t. */
t = integral_constant_value (t);
- if (t == null_node)
+ if (t == null_node
+ || NULLPTR_TYPE_P (TREE_TYPE (t)))
return true;
if (CP_INTEGRAL_TYPE_P (TREE_TYPE (t)) && integer_zerop (t))
{
if (same_type_p (from, to))
return conv;
- if ((tcode == POINTER_TYPE || TYPE_PTR_TO_MEMBER_P (to))
+ /* [conv.ptr]
+ A null pointer constant can be converted to a pointer type; ... A
+ null pointer constant of integral type can be converted to an
+ rvalue of type std::nullptr_t. */
+ if ((tcode == POINTER_TYPE || TYPE_PTR_TO_MEMBER_P (to)
+ || NULLPTR_TYPE_P (to))
&& expr && null_ptr_cst_p (expr))
conv = build_conv (ck_std, to, conv);
else if ((tcode == INTEGER_TYPE && fcode == POINTER_TYPE)
An rvalue of arithmetic, unscoped enumeration, pointer, or
pointer to member type can be converted to an rvalue of type
- bool. */
+ bool. ... An rvalue of type std::nullptr_t can be converted
+ to an rvalue of type bool; */
if (ARITHMETIC_TYPE_P (from)
|| UNSCOPED_ENUM_P (from)
|| fcode == POINTER_TYPE
- || TYPE_PTR_TO_MEMBER_P (from))
+ || TYPE_PTR_TO_MEMBER_P (from)
+ || NULLPTR_TYPE_P (from))
{
conv = build_conv (ck_std, to, conv);
if (fcode == POINTER_TYPE
|| TYPE_PTRMEM_P (from)
|| (TYPE_PTRMEMFUNC_P (from)
- && conv->rank < cr_pbool))
+ && conv->rank < cr_pbool)
+ || NULLPTR_TYPE_P (from))
conv->rank = cr_pbool;
return conv;
}
t = TREE_TYPE (reference_type);
+ /* We're performing a user-defined conversion to a desired type, so set
+ this for the benefit of add_candidates. */
+ flags |= LOOKUP_NO_CONVERSION;
+
for (; conversions; conversions = TREE_CHAIN (conversions))
{
tree fns = TREE_VALUE (conversions);
+ tree binfo = TREE_PURPOSE (conversions);
+ struct z_candidate *old_candidates = candidates;;
- for (; fns; fns = OVL_NEXT (fns))
+ add_candidates (fns, first_arg, NULL, reference_type,
+ NULL_TREE, false,
+ binfo, TYPE_BINFO (s),
+ flags, &candidates);
+
+ for (cand = candidates; cand != old_candidates; cand = cand->next)
{
- tree f = OVL_CURRENT (fns);
+ /* Now, see if the conversion function really returns
+ an lvalue of the appropriate type. From the
+ point of view of unification, simply returning an
+ rvalue of the right type is good enough. */
+ tree f = cand->fn;
tree t2 = TREE_TYPE (TREE_TYPE (f));
-
- if (DECL_NONCONVERTING_P (f)
- && (flags & LOOKUP_ONLYCONVERTING))
- continue;
-
- cand = NULL;
-
- /* If this is a template function, try to get an exact
- match. */
- if (TREE_CODE (f) == TEMPLATE_DECL)
+ if (TREE_CODE (t2) != REFERENCE_TYPE
+ || !reference_compatible_p (t, TREE_TYPE (t2)))
{
- cand = add_template_candidate (&candidates,
- f, s,
- NULL_TREE,
- first_arg,
- NULL,
- reference_type,
- TYPE_BINFO (s),
- TREE_PURPOSE (conversions),
- LOOKUP_NORMAL,
- DEDUCE_CONV);
-
- if (cand)
- {
- /* Now, see if the conversion function really returns
- an lvalue of the appropriate type. From the
- point of view of unification, simply returning an
- rvalue of the right type is good enough. */
- f = cand->fn;
- t2 = TREE_TYPE (TREE_TYPE (f));
- if (TREE_CODE (t2) != REFERENCE_TYPE
- || !reference_compatible_p (t, TREE_TYPE (t2)))
- {
- candidates = candidates->next;
- cand = NULL;
- }
- }
+ cand->viable = 0;
}
- else if (TREE_CODE (t2) == REFERENCE_TYPE
- && reference_compatible_p (t, TREE_TYPE (t2)))
- cand = add_function_candidate (&candidates, f, s, first_arg,
- NULL, TYPE_BINFO (s),
- TREE_PURPOSE (conversions),
- LOOKUP_NORMAL);
-
- if (cand)
+ else
{
conversion *identity_conv;
/* Build a standard conversion sequence indicating the
return_type, strict, flags);
if (i != 0)
- return NULL;
+ goto fail;
fn = instantiate_template (tmpl, targs, tf_none);
if (fn == error_mark_node)
- return NULL;
+ goto fail;
/* In [class.copy]:
tree arg_types = FUNCTION_FIRST_USER_PARMTYPE (fn);
if (arg_types && same_type_p (TYPE_MAIN_VARIANT (TREE_VALUE (arg_types)),
ctype))
- return NULL;
+ goto fail;
}
if (obj != NULL_TREE)
cand->template_decl = DECL_TEMPLATE_INFO (fn);
return cand;
+ fail:
+ return add_candidate (candidates, tmpl, first_arg, arglist, nargs, NULL,
+ access_path, conversion_path, 0);
}
}
/* The CANDS are the set of candidates that were considered for
- overload resolution. Return the set of viable candidates. If none
- of the candidates were viable, set *ANY_VIABLE_P to true. STRICT_P
- is true if a candidate should be considered viable only if it is
- strictly viable. */
+ overload resolution. Return the set of viable candidates, or CANDS
+ if none are viable. If any of the candidates were viable, set
+ *ANY_VIABLE_P to true. STRICT_P is true if a candidate should be
+ considered viable only if it is strictly viable. */
static struct z_candidate*
splice_viable (struct z_candidate *cands,
static inline int
equal_functions (tree fn1, tree fn2)
{
+ if (TREE_CODE (fn1) != TREE_CODE (fn2))
+ return 0;
+ if (TREE_CODE (fn1) == TEMPLATE_DECL)
+ return fn1 == fn2;
if (DECL_LOCAL_FUNCTION_P (fn1) || DECL_LOCAL_FUNCTION_P (fn2)
|| DECL_EXTERN_C_FUNCTION_P (fn1))
return decls_match (fn1, fn2);
inform (input_location, "%s %T <conversion>", msgstr, candidate->fn);
else if (candidate->viable == -1)
inform (input_location, "%s %+#D <near match>", msgstr, candidate->fn);
- else if (DECL_DELETED_FN (candidate->fn))
+ else if (DECL_DELETED_FN (STRIP_TEMPLATE (candidate->fn)))
inform (input_location, "%s %+#D <deleted>", msgstr, candidate->fn);
else
inform (input_location, "%s %+#D", msgstr, candidate->fn);
{
tree fn = cand1->fn;
/* Skip builtin candidates and conversion functions. */
- if (TREE_CODE (fn) != FUNCTION_DECL)
+ if (!DECL_P (fn))
continue;
cand2 = &cand1->next;
while (*cand2)
{
- if (TREE_CODE ((*cand2)->fn) == FUNCTION_DECL
+ if (DECL_P ((*cand2)->fn)
&& equal_functions (fn, (*cand2)->fn))
*cand2 = (*cand2)->next;
else
candidates = 0;
flags |= LOOKUP_NO_CONVERSION;
+ if (BRACE_ENCLOSED_INITIALIZER_P (expr))
+ flags |= LOOKUP_NO_NARROWING;
/* It's OK to bind a temporary for converting constructor arguments, but
not in converting the return value of a conversion operator. */
if (ctors)
{
+ int ctorflags = flags;
+ bool try_single_arg = true;
ctors = BASELINK_FUNCTIONS (ctors);
first_arg = build_int_cst (build_pointer_type (totype), 0);
- if (BRACE_ENCLOSED_INITIALIZER_P (expr)
- && !TYPE_HAS_LIST_CTOR (totype))
+ if (BRACE_ENCLOSED_INITIALIZER_P (expr))
{
- args = ctor_to_vec (expr);
- /* We still allow more conversions within an init-list. */
- flags = ((flags & ~LOOKUP_NO_CONVERSION)
- /* But not for the copy ctor. */
- |LOOKUP_NO_COPY_CTOR_CONVERSION
- |LOOKUP_NO_NARROWING);
+ /* For list-initialization we consider explicit constructors, but
+ give an error if one is selected. */
+ ctorflags &= ~LOOKUP_ONLYCONVERTING;
+ /* If the class has a list ctor, try passing the list as a single
+ argument first, but only consider list ctors. */
+ if (TYPE_HAS_LIST_CTOR (totype))
+ ctorflags |= LOOKUP_LIST_ONLY;
+ else
+ try_single_arg = false;
}
- else
- args = make_tree_vector_single (expr);
/* We should never try to call the abstract or base constructor
from here. */
gcc_assert (!DECL_HAS_IN_CHARGE_PARM_P (OVL_CURRENT (ctors))
&& !DECL_HAS_VTT_PARM_P (OVL_CURRENT (ctors)));
- }
- for (; ctors; ctors = OVL_NEXT (ctors))
- {
- tree ctor = OVL_CURRENT (ctors);
- if (DECL_NONCONVERTING_P (ctor)
- && !BRACE_ENCLOSED_INITIALIZER_P (expr))
- continue;
- if (TREE_CODE (ctor) == TEMPLATE_DECL)
- cand = add_template_candidate (&candidates, ctor, totype,
- NULL_TREE, first_arg, args, NULL_TREE,
- TYPE_BINFO (totype),
- TYPE_BINFO (totype),
- flags,
- DEDUCE_CALL);
- else
- cand = add_function_candidate (&candidates, ctor, totype,
- first_arg, args, TYPE_BINFO (totype),
- TYPE_BINFO (totype),
- flags);
+ /* If EXPR is not an initializer-list, or if totype has a list
+ constructor, try EXPR as a single argument. */
+ if (try_single_arg)
+ {
+ args = make_tree_vector_single (expr);
+ add_candidates (ctors, first_arg, args, NULL_TREE, NULL_TREE, false,
+ TYPE_BINFO (totype), TYPE_BINFO (totype),
+ ctorflags, &candidates);
+ }
- if (cand)
+ /* If we didn't find a suitable list constructor for an initializer-list,
+ try breaking it apart. */
+ if (!candidates && BRACE_ENCLOSED_INITIALIZER_P (expr))
+ {
+ args = ctor_to_vec (expr);
+ /* We aren't looking for list-ctors anymore. */
+ ctorflags &= ~LOOKUP_LIST_ONLY;
+ /* We still allow more conversions within an init-list. */
+ ctorflags &= ~LOOKUP_NO_CONVERSION;
+ /* But not for the copy ctor. */
+ ctorflags |= LOOKUP_NO_COPY_CTOR_CONVERSION;
+ add_candidates (ctors, first_arg, args, NULL_TREE, NULL_TREE, false,
+ TYPE_BINFO (totype), TYPE_BINFO (totype),
+ ctorflags, &candidates);
+ }
+
+ for (cand = candidates; cand; cand = cand->next)
{
cand->second_conv = build_identity_conv (totype, NULL_TREE);
for (; conv_fns; conv_fns = TREE_CHAIN (conv_fns))
{
- tree fns;
tree conversion_path = TREE_PURPOSE (conv_fns);
+ struct z_candidate *old_candidates;
/* 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
if (TREE_CODE (totype) == REFERENCE_TYPE)
convflags |= LOOKUP_NO_TEMP_BIND;
- for (fns = TREE_VALUE (conv_fns); fns; fns = OVL_NEXT (fns))
+ old_candidates = candidates;
+ add_candidates (TREE_VALUE (conv_fns), first_arg, NULL, totype,
+ NULL_TREE, false,
+ conversion_path, TYPE_BINFO (fromtype),
+ flags, &candidates);
+
+ for (cand = candidates; cand != old_candidates; cand = cand->next)
{
- tree fn = OVL_CURRENT (fns);
-
- if (DECL_NONCONVERTING_P (fn)
- && (flags & LOOKUP_ONLYCONVERTING))
- continue;
-
- /* [over.match.funcs] For conversion functions, the function
- is considered to be a member of the class of the implicit
- object argument for the purpose of defining the type of
- the implicit object parameter.
-
- So we pass fromtype as CTYPE to add_*_candidate. */
-
- if (TREE_CODE (fn) == TEMPLATE_DECL)
- cand = add_template_candidate (&candidates, fn, fromtype,
- NULL_TREE,
- first_arg, NULL, totype,
- TYPE_BINFO (fromtype),
- conversion_path,
- flags,
- DEDUCE_CONV);
- else
- cand = add_function_candidate (&candidates, fn, fromtype,
- first_arg, NULL,
- TYPE_BINFO (fromtype),
- conversion_path,
- flags);
+ conversion *ics
+ = implicit_conversion (totype,
+ TREE_TYPE (TREE_TYPE (cand->fn)),
+ 0,
+ /*c_cast_p=*/false, convflags);
- if (cand)
- {
- conversion *ics
- = implicit_conversion (totype,
- TREE_TYPE (TREE_TYPE (cand->fn)),
- 0,
- /*c_cast_p=*/false, convflags);
-
- /* If LOOKUP_NO_TEMP_BIND isn't set, then this is
- copy-initialization. In that case, "The result of the
- call is then used to direct-initialize the object that is
- the destination of the copy-initialization." [dcl.init]
-
- We represent this in the conversion sequence with an
- rvalue conversion, which means a constructor call. But
- don't add a second rvalue conversion if there's already
- one there. Which there really shouldn't be, but it's
- harmless since we'd add it here anyway. */
- if (ics && MAYBE_CLASS_TYPE_P (totype) && ics->kind != ck_rvalue
- && !(convflags & LOOKUP_NO_TEMP_BIND))
- ics = build_conv (ck_rvalue, totype, ics);
-
- cand->second_conv = ics;
-
- if (!ics)
- cand->viable = 0;
- else if (candidates->viable == 1 && ics->bad_p)
- cand->viable = -1;
- }
+ /* If LOOKUP_NO_TEMP_BIND isn't set, then this is
+ copy-initialization. In that case, "The result of the
+ call is then used to direct-initialize the object that is
+ the destination of the copy-initialization." [dcl.init]
+
+ We represent this in the conversion sequence with an
+ rvalue conversion, which means a constructor call. But
+ don't add a second rvalue conversion if there's already
+ one there. Which there really shouldn't be, but it's
+ harmless since we'd add it here anyway. */
+ if (ics && MAYBE_CLASS_TYPE_P (totype) && ics->kind != ck_rvalue
+ && !(convflags & LOOKUP_NO_TEMP_BIND))
+ ics = build_conv (ck_rvalue, totype, ics);
+
+ cand->second_conv = ics;
+
+ if (!ics)
+ cand->viable = 0;
+ else if (cand->viable == 1 && ics->bad_p)
+ cand->viable = -1;
}
}
}
/* Add the various candidate functions. */
- add_candidates (fn, args, explicit_targs, template_only,
+ add_candidates (fn, NULL_TREE, args, NULL_TREE,
+ explicit_targs, template_only,
/*conversion_path=*/NULL_TREE,
/*access_path=*/NULL_TREE,
LOOKUP_NORMAL,
{
if (complain & tf_error)
{
- if (!any_viable_p && candidates && ! candidates->next)
+ if (!any_viable_p && candidates && ! candidates->next
+ && (TREE_CODE (candidates->fn) == FUNCTION_DECL))
return cp_build_function_call_vec (candidates->fn, args, complain);
if (TREE_CODE (fn) == TEMPLATE_ID_EXPR)
fn = TREE_OPERAND (fn, 0);
if (fns)
{
- tree base = BINFO_TYPE (BASELINK_BINFO (fns));
first_mem_arg = build_this (obj);
- for (fns = BASELINK_FUNCTIONS (fns); fns; fns = OVL_NEXT (fns))
- {
- tree fn = OVL_CURRENT (fns);
-
- if (TREE_CODE (fn) == TEMPLATE_DECL)
- add_template_candidate (&candidates, fn, base, NULL_TREE,
- first_mem_arg, *args, NULL_TREE,
- TYPE_BINFO (type),
- TYPE_BINFO (type),
- LOOKUP_NORMAL, DEDUCE_CALL);
- else
- add_function_candidate
- (&candidates, fn, base, first_mem_arg, *args, TYPE_BINFO (type),
- TYPE_BINFO (type), LOOKUP_NORMAL);
- }
+ add_candidates (BASELINK_FUNCTIONS (fns),
+ first_mem_arg, *args, NULL_TREE,
+ NULL_TREE, false,
+ BASELINK_BINFO (fns), BASELINK_ACCESS_BINFO (fns),
+ LOOKUP_NORMAL, &candidates);
}
convs = lookup_conversions (type, /*lookup_template_convs_p=*/true);
/* Add each of the viable functions in FNS (a FUNCTION_DECL or
OVERLOAD) to the CANDIDATES, returning an updated list of
- CANDIDATES. The ARGS are the arguments provided to the call,
- without any implicit object parameter. This may change ARGS. The
+ CANDIDATES. The ARGS are the arguments provided to the call;
+ if FIRST_ARG is non-null it is the implicit object argument,
+ otherwise the first element of ARGS is used if needed. The
EXPLICIT_TARGS are explicit template arguments provided.
TEMPLATE_ONLY is true if only template functions should be
considered. CONVERSION_PATH, ACCESS_PATH, and FLAGS are as for
add_function_candidate. */
static void
-add_candidates (tree fns, const VEC(tree,gc) *args,
+add_candidates (tree fns, tree first_arg, const VEC(tree,gc) *args,
+ tree return_type,
tree explicit_targs, bool template_only,
tree conversion_path, tree access_path,
int flags,
struct z_candidate **candidates)
{
tree ctype;
- VEC(tree,gc) *non_static_args;
- tree first_arg;
+ const VEC(tree,gc) *non_static_args;
+ bool check_list_ctor;
+ bool check_converting;
+ unification_kind_t strict;
+ tree fn;
+
+ if (!fns)
+ return;
+
+ /* Precalculate special handling of constructors and conversion ops. */
+ fn = OVL_CURRENT (fns);
+ if (DECL_CONV_FN_P (fn))
+ {
+ check_list_ctor = false;
+ check_converting = !!(flags & LOOKUP_ONLYCONVERTING);
+ if (flags & LOOKUP_NO_CONVERSION)
+ /* We're doing return_type(x). */
+ strict = DEDUCE_CONV;
+ else
+ /* We're doing x.operator return_type(). */
+ strict = DEDUCE_EXACT;
+ /* [over.match.funcs] For conversion functions, the function
+ is considered to be a member of the class of the implicit
+ object argument for the purpose of defining the type of
+ the implicit object parameter. */
+ ctype = TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (first_arg)));
+ }
+ else
+ {
+ if (DECL_CONSTRUCTOR_P (fn))
+ {
+ check_list_ctor = !!(flags & LOOKUP_LIST_ONLY);
+ check_converting = !!(flags & LOOKUP_ONLYCONVERTING);
+ }
+ else
+ {
+ check_list_ctor = false;
+ check_converting = false;
+ }
+ strict = DEDUCE_CALL;
+ ctype = conversion_path ? BINFO_TYPE (conversion_path) : NULL_TREE;
+ }
- ctype = conversion_path ? BINFO_TYPE (conversion_path) : NULL_TREE;
- /* Delay creating the implicit this parameter until it is needed. */
- non_static_args = NULL;
- first_arg = NULL_TREE;
+ if (first_arg)
+ non_static_args = args;
+ else
+ /* Delay creating the implicit this parameter until it is needed. */
+ non_static_args = NULL;
- while (fns)
+ for (; fns; fns = OVL_NEXT (fns))
{
- tree fn;
tree fn_first_arg;
const VEC(tree,gc) *fn_args;
fn = OVL_CURRENT (fns);
+
+ if (check_converting && DECL_NONCONVERTING_P (fn))
+ continue;
+ if (check_list_ctor && !is_list_ctor (fn))
+ continue;
+
/* Figure out which set of arguments to use. */
if (DECL_NONSTATIC_MEMBER_FUNCTION_P (fn))
{
- /* If this function is a non-static member, prepend the implicit
- object parameter. */
- if (non_static_args == NULL)
+ /* If this function is a non-static member and we didn't get an
+ implicit object argument, move it out of args. */
+ if (first_arg == NULL_TREE)
{
unsigned int ix;
tree arg;
-
- non_static_args = VEC_alloc (tree, gc,
- VEC_length (tree, args) - 1);
+ VEC(tree,gc) *tempvec
+ = VEC_alloc (tree, gc, VEC_length (tree, args) - 1);
for (ix = 1; VEC_iterate (tree, args, ix, arg); ++ix)
- VEC_quick_push (tree, non_static_args, arg);
+ VEC_quick_push (tree, tempvec, arg);
+ non_static_args = tempvec;
+ first_arg = build_this (VEC_index (tree, args, 0));
}
- if (first_arg == NULL_TREE)
- first_arg = build_this (VEC_index (tree, args, 0));
+
fn_first_arg = first_arg;
fn_args = non_static_args;
}
explicit_targs,
fn_first_arg,
fn_args,
- NULL_TREE,
+ return_type,
access_path,
conversion_path,
flags,
- DEDUCE_CALL);
+ strict);
else if (!template_only)
add_function_candidate (candidates,
fn,
access_path,
conversion_path,
flags);
- fns = OVL_NEXT (fns);
}
}
/* Add namespace-scope operators to the list of functions to
consider. */
add_candidates (lookup_function_nonclass (fnname, arglist, /*block_p=*/true),
- arglist, NULL_TREE, false, NULL_TREE, NULL_TREE,
+ NULL_TREE, arglist, NULL_TREE,
+ NULL_TREE, false, NULL_TREE, NULL_TREE,
flags, &candidates);
/* Add class-member operators to the candidate set. */
if (CLASS_TYPE_P (TREE_TYPE (arg1)))
goto user_defined_result_ready;
}
if (fns)
- add_candidates (BASELINK_FUNCTIONS (fns), arglist,
+ add_candidates (BASELINK_FUNCTIONS (fns),
+ NULL_TREE, arglist, NULL_TREE,
NULL_TREE, false,
BASELINK_BINFO (fns),
- TYPE_BINFO (TREE_TYPE (arg1)),
+ BASELINK_ACCESS_BINFO (fns),
flags, &candidates);
}
return cp_build_unary_op (code, arg1, candidates != 0, complain);
case ARRAY_REF:
- return build_array_ref (input_location, arg1, arg2);
+ return cp_build_array_ref (input_location, arg1, arg2, complain);
case MEMBER_REF:
return build_m_component_ref (cp_build_indirect_ref (arg1, RO_NULL,
< TYPE_PRECISION (double_type_node))
&& !DECIMAL_FLOAT_MODE_P (TYPE_MODE (TREE_TYPE (arg))))
arg = convert_to_real (double_type_node, arg);
+ else if (NULLPTR_TYPE_P (TREE_TYPE (arg)))
+ arg = null_pointer_node;
else if (INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (arg)))
arg = perform_integral_promotions (arg);
}
/* [class.copy]: the copy constructor is implicitly defined even if
the implementation elided its use. */
- else if (TYPE_HAS_COMPLEX_INIT_REF (DECL_CONTEXT (fn)))
+ else if (TYPE_HAS_COMPLEX_INIT_REF (DECL_CONTEXT (fn))
+ || move_fn_p (fn))
{
mark_used (fn);
already_used = true;
{
if (TREE_CODE (arg) == TARGET_EXPR)
return arg;
- else if (TYPE_HAS_TRIVIAL_INIT_REF (DECL_CONTEXT (fn)))
+ else if (TYPE_HAS_TRIVIAL_INIT_REF (DECL_CONTEXT (fn))
+ && !move_fn_p (fn))
return build_target_expr_with_type (arg, DECL_CONTEXT (fn));
}
else if (TREE_CODE (arg) == TARGET_EXPR
VEC(tree,gc) *user_args;
tree call;
tree fn;
- tree class_type;
int template_only = 0;
bool any_viable_p;
tree orig_instance;
tree orig_fns;
VEC(tree,gc) *orig_args = NULL;
void *p;
+ tree list = NULL_TREE;
+ bool try_normal;
gcc_assert (instance != NULL_TREE);
name = complete_dtor_identifier;
/* If CONSTRUCTOR_IS_DIRECT_INIT is set, this was a T{ } form
- initializer, not T({ }). If the type doesn't have a list ctor,
- break apart the list into separate ctor args. */
+ initializer, not T({ }). If the type doesn't have a list ctor (or no
+ viable list ctor), break apart the list into separate ctor args. */
+ try_normal = true;
if (DECL_CONSTRUCTOR_P (fn) && args != NULL && !VEC_empty (tree, *args)
&& BRACE_ENCLOSED_INITIALIZER_P (VEC_index (tree, *args, 0))
- && CONSTRUCTOR_IS_DIRECT_INIT (VEC_index (tree, *args, 0))
- && !TYPE_HAS_LIST_CTOR (basetype))
+ && CONSTRUCTOR_IS_DIRECT_INIT (VEC_index (tree, *args, 0)))
{
gcc_assert (VEC_length (tree, *args) == 1);
- *args = ctor_to_vec (VEC_index (tree, *args, 0));
+ list = VEC_index (tree, *args, 0);
+
+ if (TYPE_HAS_LIST_CTOR (basetype))
+ flags |= LOOKUP_LIST_ONLY;
+ else
+ try_normal = false;
}
- class_type = (conversion_path ? BINFO_TYPE (conversion_path) : NULL_TREE);
first_mem_arg = instance_ptr;
/* Get the high-water mark for the CONVERSION_OBSTACK. */
p = conversion_obstack_alloc (0);
- for (fn = fns; fn; fn = OVL_NEXT (fn))
+ any_viable_p = false;
+ if (try_normal)
{
- tree t = OVL_CURRENT (fn);
- tree this_first_arg;
-
- /* We can end up here for copy-init of same or base class. */
- if ((flags & LOOKUP_ONLYCONVERTING)
- && DECL_NONCONVERTING_P (t))
- continue;
-
- if (DECL_NONSTATIC_MEMBER_FUNCTION_P (t))
- this_first_arg = first_mem_arg;
- else
- this_first_arg = NULL_TREE;
+ add_candidates (fns, first_mem_arg, user_args, optype,
+ explicit_targs, template_only, conversion_path,
+ access_binfo, flags, &candidates);
+ candidates = splice_viable (candidates, pedantic, &any_viable_p);
+ }
- if (TREE_CODE (t) == TEMPLATE_DECL)
- /* A member template. */
- add_template_candidate (&candidates, t,
- class_type,
- explicit_targs,
- this_first_arg,
- args == NULL ? NULL : *args,
- optype,
- access_binfo,
- conversion_path,
- flags,
- DEDUCE_CALL);
- else if (! template_only)
- add_function_candidate (&candidates, t,
- class_type,
- this_first_arg,
- args == NULL ? NULL : *args,
- access_binfo,
- conversion_path,
- flags);
+ if (!any_viable_p && list)
+ {
+ VEC(tree,gc) *list_args = ctor_to_vec (list);
+ flags &= ~LOOKUP_LIST_ONLY;
+ add_candidates (fns, first_mem_arg, list_args, optype,
+ explicit_targs, template_only, conversion_path,
+ access_binfo, flags, &candidates);
+ candidates = splice_viable (candidates, pedantic, &any_viable_p);
}
- candidates = splice_viable (candidates, pedantic, &any_viable_p);
if (!any_viable_p)
{
if (complain & tf_error)
{
if (!COMPLETE_TYPE_P (basetype))
cxx_incomplete_type_error (instance_ptr, basetype);
+ else if (optype)
+ error ("no matching function for call to %<%T::operator %T(%A)%#V%>",
+ basetype, optype, build_tree_list_vec (user_args),
+ TREE_TYPE (TREE_TYPE (instance_ptr)));
else
{
char *pretty_name;
/* This is not an error, it is runtime undefined
behavior. */
warning (0, (DECL_CONSTRUCTOR_P (current_function_decl) ?
- "abstract virtual %q#D called from constructor"
- : "abstract virtual %q#D called from destructor"),
+ "pure virtual %q#D called from constructor"
+ : "pure virtual %q#D called from destructor"),
fn);
if (TREE_CODE (TREE_TYPE (fn)) == METHOD_TYPE
Two conversion sequences with the same rank are indistinguishable
unless one of the following rules applies:
- --A conversion that is not a conversion of a pointer, or pointer
- to member, to bool is better than another conversion that is such
- a conversion.
+ --A conversion that does not a convert a pointer, pointer to member,
+ or std::nullptr_t to bool is better than one that does.
The ICS_STD_RANK automatically handles the pointer-to-bool rule,
so that we do not have to check it explicitly. */
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