}
/* Subroutine of composite_pointer_type to implement the recursive
- case. See that function for documentation fo the parameters. */
+ case. See that function for documentation of the parameters. */
static tree
-composite_pointer_type_r (tree t1, tree t2, const char* location,
+composite_pointer_type_r (tree t1, tree t2,
+ composite_pointer_operation operation,
tsubst_flags_t complain)
{
tree pointee1;
&& TREE_CODE (pointee2) == POINTER_TYPE)
|| (TYPE_PTR_TO_MEMBER_P (pointee1)
&& TYPE_PTR_TO_MEMBER_P (pointee2)))
- result_type = composite_pointer_type_r (pointee1, pointee2, location,
+ result_type = composite_pointer_type_r (pointee1, pointee2, operation,
complain);
else
{
if (complain & tf_error)
- permerror (input_location, "%s between distinct pointer types %qT and %qT "
- "lacks a cast",
- location, t1, t2);
+ {
+ switch (operation)
+ {
+ case CPO_COMPARISON:
+ permerror (input_location, "comparison between "
+ "distinct pointer types %qT and %qT lacks a cast",
+ t1, t2);
+ break;
+ case CPO_CONVERSION:
+ permerror (input_location, "conversion between "
+ "distinct pointer types %qT and %qT lacks a cast",
+ t1, t2);
+ break;
+ case CPO_CONDITIONAL_EXPR:
+ permerror (input_location, "conditional expression between "
+ "distinct pointer types %qT and %qT lacks a cast",
+ t1, t2);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ }
result_type = void_type_node;
}
result_type = cp_build_qualified_type (result_type,
if (!same_type_p (TYPE_PTRMEM_CLASS_TYPE (t1),
TYPE_PTRMEM_CLASS_TYPE (t2))
&& (complain & tf_error))
- permerror (input_location, "%s between distinct pointer types %qT and %qT "
- "lacks a cast",
- location, t1, t2);
+ {
+ switch (operation)
+ {
+ case CPO_COMPARISON:
+ permerror (input_location, "comparison between "
+ "distinct pointer types %qT and %qT lacks a cast",
+ t1, t2);
+ break;
+ case CPO_CONVERSION:
+ permerror (input_location, "conversion between "
+ "distinct pointer types %qT and %qT lacks a cast",
+ t1, t2);
+ break;
+ case CPO_CONDITIONAL_EXPR:
+ permerror (input_location, "conditional expression between "
+ "distinct pointer types %qT and %qT lacks a cast",
+ t1, t2);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ }
result_type = build_ptrmem_type (TYPE_PTRMEM_CLASS_TYPE (t1),
result_type);
}
}
/* Return the composite pointer type (see [expr.rel]) for T1 and T2.
- ARG1 and ARG2 are the values with those types. The LOCATION is a
- string describing the current location, in case an error occurs.
+ ARG1 and ARG2 are the values with those types. The OPERATION is to
+ describe the operation between the pointer types,
+ in case an error occurs.
This routine also implements the computation of a common type for
pointers-to-members as per [expr.eq]. */
tree
composite_pointer_type (tree t1, tree t2, tree arg1, tree arg2,
- const char* location, tsubst_flags_t complain)
+ composite_pointer_operation operation,
+ tsubst_flags_t complain)
{
tree class1;
tree class2;
tree result_type;
if (TYPE_PTRFN_P (t2) && (complain & tf_error))
- pedwarn (input_location, OPT_pedantic, "ISO C++ forbids %s "
- "between pointer of type %<void *%> and pointer-to-function",
- location);
+ {
+ switch (operation)
+ {
+ case CPO_COMPARISON:
+ pedwarn (input_location, OPT_pedantic,
+ "ISO C++ forbids comparison between "
+ "pointer of type %<void *%> and pointer-to-function");
+ break;
+ case CPO_CONVERSION:
+ pedwarn (input_location, OPT_pedantic,
+ "ISO C++ forbids conversion between "
+ "pointer of type %<void *%> and pointer-to-function");
+ break;
+ case CPO_CONDITIONAL_EXPR:
+ pedwarn (input_location, OPT_pedantic,
+ "ISO C++ forbids conditional expression between "
+ "pointer of type %<void *%> and pointer-to-function");
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ }
result_type
= cp_build_qualified_type (void_type_node,
(cp_type_quals (TREE_TYPE (t1))
t1 = (build_pointer_type
(cp_build_qualified_type (class2, TYPE_QUALS (class1))));
else
- {
- if (complain & tf_error)
- error ("%s between distinct pointer types %qT and %qT "
- "lacks a cast", location, t1, t2);
- return error_mark_node;
- }
+ {
+ if (complain & tf_error)
+ switch (operation)
+ {
+ case CPO_COMPARISON:
+ error ("comparison between distinct "
+ "pointer types %qT and %qT lacks a cast", t1, t2);
+ break;
+ case CPO_CONVERSION:
+ error ("conversion between distinct "
+ "pointer types %qT and %qT lacks a cast", t1, t2);
+ break;
+ case CPO_CONDITIONAL_EXPR:
+ error ("conditional expression between distinct "
+ "pointer types %qT and %qT lacks a cast", t1, t2);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ return error_mark_node;
+ }
}
/* [expr.eq] permits the application of a pointer-to-member
conversion to change the class type of one of the types. */
else if (TYPE_PTR_TO_MEMBER_P (t1)
- && !same_type_p (TYPE_PTRMEM_CLASS_TYPE (t1),
+ && !same_type_p (TYPE_PTRMEM_CLASS_TYPE (t1),
TYPE_PTRMEM_CLASS_TYPE (t2)))
{
class1 = TYPE_PTRMEM_CLASS_TYPE (t1);
else if (DERIVED_FROM_P (class2, class1))
t2 = build_ptrmem_type (class1, TYPE_PTRMEM_POINTED_TO_TYPE (t2));
else
- {
- if (complain & tf_error)
- error ("%s between distinct pointer-to-member types %qT and %qT "
- "lacks a cast", location, t1, t2);
- return error_mark_node;
- }
+ {
+ if (complain & tf_error)
+ switch (operation)
+ {
+ case CPO_COMPARISON:
+ error ("comparison between distinct "
+ "pointer-to-member types %qT and %qT lacks a cast",
+ t1, t2);
+ break;
+ case CPO_CONVERSION:
+ error ("conversion between distinct "
+ "pointer-to-member types %qT and %qT lacks a cast",
+ t1, t2);
+ break;
+ case CPO_CONDITIONAL_EXPR:
+ error ("conditional expression between distinct "
+ "pointer-to-member types %qT and %qT lacks a cast",
+ t1, t2);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ return error_mark_node;
+ }
}
- return composite_pointer_type_r (t1, t2, location, complain);
+ return composite_pointer_type_r (t1, t2, operation, complain);
}
/* Return the merged type of two types.
|| (TYPE_PTRMEMFUNC_P (t1) && TYPE_PTRMEMFUNC_P (t2)));
return composite_pointer_type (t1, t2, error_mark_node, error_mark_node,
- "conversion", tf_warning_or_error);
+ CPO_CONVERSION, tf_warning_or_error);
}
\f
/* Compare two exception specifier types for exactness or subsetness, if
return true;
}
+/* Compare the relative position of T1 and T2 into their respective
+ template parameter list.
+ T1 and T2 must be template parameter types.
+ Return TRUE if T1 and T2 have the same position, FALSE otherwise. */
+
+static bool
+comp_template_parms_position (tree t1, tree t2)
+{
+ gcc_assert (t1 && t2
+ && TREE_CODE (t1) == TREE_CODE (t2)
+ && (TREE_CODE (t1) == BOUND_TEMPLATE_TEMPLATE_PARM
+ || TREE_CODE (t1) == TEMPLATE_TEMPLATE_PARM
+ || TREE_CODE (t1) == TEMPLATE_TYPE_PARM));
+
+ if (TEMPLATE_TYPE_IDX (t1) != TEMPLATE_TYPE_IDX (t2)
+ || TEMPLATE_TYPE_LEVEL (t1) != TEMPLATE_TYPE_LEVEL (t2)
+ || (TEMPLATE_TYPE_PARAMETER_PACK (t1)
+ != TEMPLATE_TYPE_PARAMETER_PACK (t2)))
+ return false;
+
+ return true;
+}
+
+/* Subroutine of structural_comptypes.
+ Compare the template type parameters T1 and T2.
+ Return TRUE if we are sure they can't be equal, FALSE otherwise. */
+
+static bool
+incompatible_template_type_parms_p (tree t1, tree t2)
+{
+ tree decl1, tparms1 = NULL_TREE,
+ decl2, tparms2 = NULL_TREE;
+
+ gcc_assert (t1 && TREE_CODE (t1) == TEMPLATE_TYPE_PARM
+ && t2 && TREE_CODE (t2) == TEMPLATE_TYPE_PARM);
+
+ /* If T1 and T2 don't have the same relative position in their
+ template parameters set, they can't be equal. */
+ if (!comp_template_parms_position (t1, t2))
+ return true;
+
+ if (!typedef_variant_p (t1) && !typedef_variant_p (t2))
+ /* If neither T1 nor T2 is a typedef we cannot know more
+ about their incompatibility than what comp_template_parms_position
+ told us above. If we try to keep going nonetheless, the call to
+ comp_template_parms at the end of this function might lead to an
+ infinite recursion. */
+ return false;
+
+ decl1 = TYPE_NAME (t1);
+ decl2 = TYPE_NAME (t2);
+ if (decl1 == NULL_TREE || decl2 == NULL_TREE || decl1 == decl2)
+ return false ;
+
+ /* So if we reach this point, it means either T1 or T2 is a typedef variant.
+ Let's compare their template parameters. */
+
+ /* If T1 is not a typedef, there possibly is a delay between the
+ creation of DECL1 and the setting of DECL_CONTEXT (DECL1) to its
+ template decl so DECL_CONTEXT (DECL1) can be empty for
+ a little while. */
+ if (DECL_CONTEXT (decl1))
+ {
+ if (TREE_CODE (DECL_CONTEXT (decl1)) == TEMPLATE_DECL)
+ tparms1 = DECL_TEMPLATE_PARMS (DECL_CONTEXT (decl1));
+ else
+ /* T1 is a typedef variant type. Get the parms of its context. */
+ tparms1 =
+ DECL_TEMPLATE_PARMS (TI_TEMPLATE
+ (get_template_info (DECL_CONTEXT (decl1))));
+ }
+
+ /* Do the same thing for DECL2. */
+ if (DECL_CONTEXT (decl2))
+ {
+ if (TREE_CODE (DECL_CONTEXT (decl2)) == TEMPLATE_DECL)
+ tparms2 = DECL_TEMPLATE_PARMS (DECL_CONTEXT (decl2));
+ else
+ tparms2 =
+ DECL_TEMPLATE_PARMS (TI_TEMPLATE
+ (get_template_info (DECL_CONTEXT (decl2))));
+ }
+
+ if (tparms1 == NULL_TREE
+ || tparms2 == NULL_TREE
+ || tparms1 == tparms2)
+ return false;
+
+ /* And now compare the mighty template parms! */
+ return !comp_template_parms (tparms1, tparms2);
+}
+
/* Subroutine in comptypes. */
static bool
case TEMPLATE_TEMPLATE_PARM:
case BOUND_TEMPLATE_TEMPLATE_PARM:
- if (TEMPLATE_TYPE_IDX (t1) != TEMPLATE_TYPE_IDX (t2)
- || TEMPLATE_TYPE_LEVEL (t1) != TEMPLATE_TYPE_LEVEL (t2)
- || (TEMPLATE_TYPE_PARAMETER_PACK (t1)
- != TEMPLATE_TYPE_PARAMETER_PACK (t2)))
+ if (!comp_template_parms_position (t1, t2))
return false;
if (!comp_template_parms
(DECL_TEMPLATE_PARMS (TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL (t1)),
break;
case TEMPLATE_TYPE_PARM:
- if (TEMPLATE_TYPE_IDX (t1) != TEMPLATE_TYPE_IDX (t2)
- || TEMPLATE_TYPE_LEVEL (t1) != TEMPLATE_TYPE_LEVEL (t2)
- || (TEMPLATE_TYPE_PARAMETER_PACK (t1)
- != TEMPLATE_TYPE_PARAMETER_PACK (t2)))
+ if (incompatible_template_type_parms_p (t1, t2))
return false;
break;
case DECLTYPE_TYPE:
if (DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (t1)
!= DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (t2)
+ || (DECLTYPE_FOR_LAMBDA_CAPTURE (t1)
+ != DECLTYPE_FOR_LAMBDA_CAPTURE (t2))
+ || (DECLTYPE_FOR_LAMBDA_RETURN (t1)
+ != DECLTYPE_FOR_LAMBDA_RETURN (t2))
|| !cp_tree_equal (DECLTYPE_TYPE_EXPR (t1),
DECLTYPE_TYPE_EXPR (t2)))
return false;
if (type == error_mark_node)
return error_mark_node;
+ exp = resolve_nondeduced_context (exp);
if (type_unknown_p (exp))
{
cxx_incomplete_type_error (exp, TREE_TYPE (exp));
Non-class rvalues always have cv-unqualified types. */
type = TREE_TYPE (exp);
- if (!CLASS_TYPE_P (type) && cp_type_quals (type))
- exp = build_nop (TYPE_MAIN_VARIANT (type), exp);
+ if (!CLASS_TYPE_P (type) && cv_qualified_p (type))
+ exp = build_nop (cv_unqualified (type), exp);
return exp;
}
{
tree temp = unary_complex_lvalue (ADDR_EXPR, object);
if (temp)
- object = cp_build_indirect_ref (temp, NULL, complain);
+ object = cp_build_indirect_ref (temp, RO_NULL, complain);
}
/* In [expr.ref], there is an explicit list of the valid choices for
in various testsuite cases where a null object is passed where a
vtable access is required. */
if (null_object_p && warn_invalid_offsetof
- && CLASSTYPE_NON_POD_P (object_type)
+ && CLASSTYPE_NON_STD_LAYOUT (object_type)
&& !DECL_FIELD_IS_BASE (member)
&& cp_unevaluated_operand == 0
&& (complain & tf_warning))
gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE
|| TREE_CODE (name) == BIT_NOT_EXPR);
+ if (constructor_name_p (name, scope))
+ {
+ if (complain & tf_error)
+ error ("cannot call constructor %<%T::%D%> directly",
+ scope, name);
+ return error_mark_node;
+ }
+
/* Find the base of OBJECT_TYPE corresponding to SCOPE. */
access_path = lookup_base (object_type, scope, ba_check, NULL);
if (access_path == error_mark_node)
/*want_type=*/false);
member_type = cp_build_qualified_type (TREE_TYPE (member),
cp_type_quals (ptrmem_type));
- return fold_build3 (COMPONENT_REF, member_type,
+ return fold_build3_loc (input_location,
+ COMPONENT_REF, member_type,
ptrmem, member, NULL_TREE);
}
Must also handle REFERENCE_TYPEs for C++. */
tree
-build_x_indirect_ref (tree expr, const char *errorstring,
+build_x_indirect_ref (tree expr, ref_operator errorstring,
tsubst_flags_t complain)
{
tree orig_expr = expr;
/* Helper function called from c-common. */
tree
build_indirect_ref (location_t loc __attribute__ ((__unused__)),
- tree ptr, const char *errorstring)
+ tree ptr, ref_operator errorstring)
{
return cp_build_indirect_ref (ptr, errorstring, tf_warning_or_error);
}
tree
-cp_build_indirect_ref (tree ptr, const char *errorstring,
+cp_build_indirect_ref (tree ptr, ref_operator errorstring,
tsubst_flags_t complain)
{
tree pointer, type;
/* `pointer' won't be an error_mark_node if we were given a
pointer to member, so it's cool to check for this here. */
else if (TYPE_PTR_TO_MEMBER_P (type))
- error ("invalid use of %qs on pointer to member", errorstring);
+ switch (errorstring)
+ {
+ case RO_ARRAY_INDEXING:
+ error ("invalid use of array indexing on pointer to member");
+ break;
+ case RO_UNARY_STAR:
+ error ("invalid use of unary %<*%> on pointer to member");
+ break;
+ case RO_IMPLICIT_CONVERSION:
+ error ("invalid use of implicit conversion on pointer to member");
+ break;
+ default:
+ gcc_unreachable ();
+ }
else if (pointer != error_mark_node)
- {
- if (errorstring)
- error ("invalid type argument of %qs", errorstring);
- else
- error ("invalid type argument");
- }
+ switch (errorstring)
+ {
+ case RO_NULL:
+ error ("invalid type argument");
+ break;
+ case RO_ARRAY_INDEXING:
+ error ("invalid type argument of array indexing");
+ break;
+ case RO_UNARY_STAR:
+ error ("invalid type argument of unary %<*%>");
+ break;
+ case RO_IMPLICIT_CONVERSION:
+ error ("invalid type argument of implicit conversion");
+ break;
+ default:
+ gcc_unreachable ();
+ }
return error_mark_node;
}
ret = cp_build_indirect_ref (cp_build_binary_op (input_location,
PLUS_EXPR, ar, ind,
tf_warning_or_error),
- "array indexing",
+ RO_ARRAY_INDEXING,
tf_warning_or_error);
protected_set_expr_location (ret, loc);
return ret;
/* Next extract the vtable pointer from the object. */
vtbl = build1 (NOP_EXPR, build_pointer_type (vtbl_ptr_type_node),
instance_ptr);
- vtbl = cp_build_indirect_ref (vtbl, NULL, tf_warning_or_error);
+ vtbl = cp_build_indirect_ref (vtbl, RO_NULL, tf_warning_or_error);
/* If the object is not dynamic the access invokes undefined
behavior. As it is not executed in this case silence the
spurious warnings it may provoke. */
TREE_NO_WARNING (vtbl) = 1;
/* Finally, extract the function pointer from the vtable. */
- e2 = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (vtbl), vtbl,
+ e2 = fold_build2_loc (input_location,
+ POINTER_PLUS_EXPR, TREE_TYPE (vtbl), vtbl,
fold_convert (sizetype, idx));
- e2 = cp_build_indirect_ref (e2, NULL, tf_warning_or_error);
+ e2 = cp_build_indirect_ref (e2, RO_NULL, tf_warning_or_error);
TREE_CONSTANT (e2) = 1;
/* When using function descriptors, the address of the
tsubst_flags_t complain)
{
tree fntype, fndecl;
- tree name = NULL_TREE;
int is_method;
tree original = function;
int nargs;
if (TREE_CODE (function) == FUNCTION_DECL)
{
- name = DECL_NAME (function);
-
mark_used (function);
fndecl = function;
if (fndecl && DECL_BUILT_IN (fndecl)
&& DECL_FUNCTION_CODE (fndecl) == BUILT_IN_CONSTANT_P)
/* Don't do ellipsis conversion for __built_in_constant_p
- as this will result in spurious warnings for non-POD
+ as this will result in spurious errors for non-trivial
types. */
val = require_complete_type (val);
else
misinterpret. But don't warn about obj << x + y, since that is a
common idiom for I/O. */
if (warn_parentheses
+ && (complain & tf_warning)
&& !processing_template_decl
&& !error_operand_p (arg1)
&& !error_operand_p (arg2)
/* If an error was already reported for one of the arguments,
avoid reporting another error. */
-
if (code0 == ERROR_MARK || code1 == ERROR_MARK)
return error_mark_node;
return error_mark_node;
}
+ /* Issue warnings about peculiar, but valid, uses of NULL. */
+ if ((orig_op0 == null_node || orig_op1 == null_node)
+ /* It's reasonable to use pointer values as operands of &&
+ and ||, so NULL is no exception. */
+ && code != TRUTH_ANDIF_EXPR && code != TRUTH_ORIF_EXPR
+ && ( /* Both are NULL (or 0) and the operation was not a
+ comparison or a pointer subtraction. */
+ (null_ptr_cst_p (orig_op0) && null_ptr_cst_p (orig_op1)
+ && code != EQ_EXPR && code != NE_EXPR && code != MINUS_EXPR)
+ /* Or if one of OP0 or OP1 is neither a pointer nor NULL. */
+ || (!null_ptr_cst_p (orig_op0)
+ && !TYPE_PTR_P (type0) && !TYPE_PTR_TO_MEMBER_P (type0))
+ || (!null_ptr_cst_p (orig_op1)
+ && !TYPE_PTR_P (type1) && !TYPE_PTR_TO_MEMBER_P (type1)))
+ && (complain & tf_warning))
+ /* Some sort of arithmetic operation involving NULL was
+ performed. */
+ warning (OPT_Wpointer_arith, "NULL used in arithmetic");
+
switch (code)
{
case MINUS_EXPR:
else if ((code0 == POINTER_TYPE && code1 == POINTER_TYPE)
|| (TYPE_PTRMEM_P (type0) && TYPE_PTRMEM_P (type1)))
result_type = composite_pointer_type (type0, type1, op0, op1,
- "comparison", complain);
+ CPO_COMPARISON, complain);
else if ((code0 == POINTER_TYPE || TYPE_PTRMEM_P (type0))
&& null_ptr_cst_p (op1))
{
tree delta0;
tree delta1;
- type = composite_pointer_type (type0, type1, op0, op1, "comparison",
- complain);
+ type = composite_pointer_type (type0, type1, op0, op1,
+ CPO_COMPARISON, complain);
if (!same_type_p (TREE_TYPE (op0), type))
op0 = cp_convert_and_check (type, op0);
shorten = 1;
else if (code0 == POINTER_TYPE && code1 == POINTER_TYPE)
result_type = composite_pointer_type (type0, type1, op0, op1,
- "comparison", complain);
+ CPO_COMPARISON, complain);
break;
case LE_EXPR:
short_compare = 1;
else if (code0 == POINTER_TYPE && code1 == POINTER_TYPE)
result_type = composite_pointer_type (type0, type1, op0, op1,
- "comparison", complain);
+ CPO_COMPARISON, complain);
else if (code0 == POINTER_TYPE && TREE_CODE (op1) == INTEGER_CST
&& integer_zerop (op1))
result_type = type0;
if ((short_compare || code == MIN_EXPR || code == MAX_EXPR)
&& warn_sign_compare
+ && !TREE_NO_WARNING (orig_op0)
+ && !TREE_NO_WARNING (orig_op1)
/* Do not warn until the template is instantiated; we cannot
bound the ranges of the arguments until that point. */
&& !processing_template_decl
}
}
- /* Issue warnings about peculiar, but valid, uses of NULL. */
- if ((orig_op0 == null_node || orig_op1 == null_node)
- /* It's reasonable to use pointer values as operands of &&
- and ||, so NULL is no exception. */
- && code != TRUTH_ANDIF_EXPR && code != TRUTH_ORIF_EXPR
- && ( /* Both are NULL (or 0) and the operation was not a comparison. */
- (null_ptr_cst_p (orig_op0) && null_ptr_cst_p (orig_op1)
- && code != EQ_EXPR && code != NE_EXPR)
- /* Or if one of OP0 or OP1 is neither a pointer nor NULL. */
- || (!null_ptr_cst_p (orig_op0) && TREE_CODE (TREE_TYPE (op0)) != POINTER_TYPE)
- || (!null_ptr_cst_p (orig_op1) && TREE_CODE (TREE_TYPE (op1)) != POINTER_TYPE))
- && (complain & tf_warning))
- /* Some sort of arithmetic operation involving NULL was
- performed. Note that pointer-difference and pointer-addition
- have already been handled above, and so we don't end up here in
- that case. */
- warning (OPT_Wpointer_arith, "NULL used in arithmetic");
-
-
/* If CONVERTED is zero, both args will be converted to type RESULT_TYPE.
Then the expression will be built.
It will be given type FINAL_TYPE if that is nonzero;
pointer_int_sum() anyway. */
complete_type (TREE_TYPE (res_type));
- return pointer_int_sum (resultcode, ptrop,
+ return pointer_int_sum (input_location, resultcode, ptrop,
fold_if_not_in_template (intop));
}
tree fn = get_first_fn (xarg);
if (DECL_CONSTRUCTOR_P (fn) || DECL_DESTRUCTOR_P (fn))
{
- const char *type =
- (DECL_CONSTRUCTOR_P (fn) ? "constructor" : "destructor");
- error ("taking address of %s %qE", type, xarg);
+ error (DECL_CONSTRUCTOR_P (fn)
+ ? G_("taking address of constructor %qE")
+ : G_("taking address of destructor %qE"),
+ xarg);
return error_mark_node;
}
}
tree t;
if (processing_template_decl)
return expr;
- t = perform_implicit_conversion (boolean_type_node, expr,
- tf_warning_or_error);
+ t = perform_implicit_conversion_flags (boolean_type_node, expr,
+ tf_warning_or_error, LOOKUP_NORMAL);
t = fold_build_cleanup_point_expr (boolean_type_node, t);
return t;
}
-/* Return an ADDR_EXPR giving the address of T. This function
- attempts no optimizations or simplifications; it is a low-level
- primitive. */
+/* Returns the address of T. This function will fold away
+ ADDR_EXPR of INDIRECT_REF. */
tree
build_address (tree t)
{
- tree addr;
-
if (error_operand_p (t) || !cxx_mark_addressable (t))
return error_mark_node;
+ t = build_fold_addr_expr (t);
+ if (TREE_CODE (t) != ADDR_EXPR)
+ t = rvalue (t);
+ return t;
+}
- addr = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (t)), t);
+/* Returns the address of T with type TYPE. */
- return addr;
+tree
+build_typed_address (tree t, tree type)
+{
+ if (error_operand_p (t) || !cxx_mark_addressable (t))
+ return error_mark_node;
+ t = build_fold_addr_expr_with_type (t, type);
+ if (TREE_CODE (t) != ADDR_EXPR)
+ t = rvalue (t);
+ return t;
}
/* Return a NOP_EXPR converting EXPR to TYPE. */
arg = build_expr_type_conversion (flags, arg, true);
if (!arg)
errstring = (code == NEGATE_EXPR
- ? "wrong type argument to unary minus"
- : "wrong type argument to unary plus");
+ ? _("wrong type argument to unary minus")
+ : _("wrong type argument to unary plus"));
else
{
if (!noconvert && CP_INTEGRAL_TYPE_P (TREE_TYPE (arg)))
else if (!(arg = build_expr_type_conversion (WANT_INT | WANT_ENUM
| WANT_VECTOR,
arg, true)))
- errstring = "wrong type argument to bit-complement";
+ errstring = _("wrong type argument to bit-complement");
else if (!noconvert && CP_INTEGRAL_TYPE_P (TREE_TYPE (arg)))
arg = perform_integral_promotions (arg);
break;
case ABS_EXPR:
if (!(arg = build_expr_type_conversion (WANT_ARITH | WANT_ENUM, arg, true)))
- errstring = "wrong type argument to abs";
+ errstring = _("wrong type argument to abs");
else if (!noconvert)
arg = default_conversion (arg);
break;
case CONJ_EXPR:
/* Conjugating a real value is a no-op, but allow it anyway. */
if (!(arg = build_expr_type_conversion (WANT_ARITH | WANT_ENUM, arg, true)))
- errstring = "wrong type argument to conjugation";
+ errstring = _("wrong type argument to conjugation");
else if (!noconvert)
arg = default_conversion (arg);
break;
case TRUTH_NOT_EXPR:
arg = perform_implicit_conversion (boolean_type_node, arg,
complain);
- val = invert_truthvalue (arg);
+ val = invert_truthvalue_loc (input_location, arg);
if (arg != error_mark_node)
return val;
- errstring = "in argument to unary !";
+ errstring = _("in argument to unary !");
break;
case NOP_EXPR:
arg, true)))
{
if (code == PREINCREMENT_EXPR)
- errstring ="no pre-increment operator for type";
+ errstring = _("no pre-increment operator for type");
else if (code == POSTINCREMENT_EXPR)
- errstring ="no post-increment operator for type";
+ errstring = _("no post-increment operator for type");
else if (code == PREDECREMENT_EXPR)
- errstring ="no pre-decrement operator for type";
+ errstring = _("no pre-decrement operator for type");
else
- errstring ="no post-decrement operator for type";
+ errstring = _("no post-decrement operator for type");
break;
}
else if (arg == error_mark_node)
if (complain & tf_error)
readonly_error (arg, ((code == PREINCREMENT_EXPR
|| code == POSTINCREMENT_EXPR)
- ? "increment" : "decrement"));
+ ? REK_INCREMENT : REK_DECREMENT));
else
return error_mark_node;
}
return error_mark_node;
/* Forbid using -- on `bool'. */
- if (same_type_p (declared_type, boolean_type_node))
+ if (TREE_CODE (declared_type) == BOOLEAN_TYPE)
{
if (code == POSTDECREMENT_EXPR || code == PREDECREMENT_EXPR)
{
PLUS_EXPR, op1, delta,
tf_warning_or_error);
- expr = fold_build3 (COND_EXPR, ptrdiff_type_node, cond, op1, op2);
+ expr = fold_build3_loc (input_location,
+ COND_EXPR, ptrdiff_type_node, cond, op1, op2);
}
if (TREE_CODE (type) == REFERENCE_TYPE
&& CLASS_TYPE_P (TREE_TYPE (type))
&& CLASS_TYPE_P (intype)
- && real_lvalue_p (expr)
+ && (TYPE_REF_IS_RVALUE (type) || real_lvalue_p (expr))
&& DERIVED_FROM_P (intype, TREE_TYPE (type))
&& can_convert (build_pointer_type (TYPE_MAIN_VARIANT (intype)),
build_pointer_type (TYPE_MAIN_VARIANT
base, /*nonnull=*/false);
/* Convert the pointer to a reference -- but then remember that
there are no expressions with reference type in C++. */
- return convert_from_reference (build_nop (type, expr));
+ return convert_from_reference (cp_fold_convert (type, expr));
+ }
+
+ /* "An lvalue of type cv1 T1 can be cast to type rvalue reference to
+ cv2 T2 if cv2 T2 is reference-compatible with cv1 T1 (8.5.3)." */
+ if (TREE_CODE (type) == REFERENCE_TYPE
+ && TYPE_REF_IS_RVALUE (type)
+ && real_lvalue_p (expr)
+ && reference_related_p (TREE_TYPE (type), intype)
+ && (c_cast_p || at_least_as_qualified_p (TREE_TYPE (type), intype)))
+ {
+ expr = build_typed_address (expr, type);
+ return convert_from_reference (expr);
}
orig = expr;
+ /* Resolve overloaded address here rather than once in
+ implicit_conversion and again in the inverse code below. */
+ if (TYPE_PTRMEMFUNC_P (type) && type_unknown_p (expr))
+ {
+ expr = instantiate_type (type, expr, complain);
+ intype = TREE_TYPE (expr);
+ }
+
/* [expr.static.cast]
An expression e can be explicitly converted to a type T using a
intype, type);
expr = cp_build_unary_op (ADDR_EXPR, expr, 0, complain);
+
+ if (warn_strict_aliasing > 2)
+ strict_aliasing_warning (TREE_TYPE (expr), type, expr);
+
if (expr != error_mark_node)
expr = build_reinterpret_cast_1
(build_pointer_type (TREE_TYPE (type)), expr, c_cast_p,
valid_p, complain);
if (expr != error_mark_node)
- expr = cp_build_indirect_ref (expr, 0, complain);
+ /* cp_build_indirect_ref isn't right for rvalue refs. */
+ expr = convert_from_reference (fold_convert (type, expr));
return expr;
}
&& C_TYPE_FIELDS_READONLY (lhstype))))
{
if (complain & tf_error)
- readonly_error (lhs, "assignment");
+ readonly_error (lhs, REK_ASSIGNMENT);
else
return error_mark_node;
}
{
int from_array;
- if (!same_or_base_type_p (TYPE_MAIN_VARIANT (lhstype),
- TYPE_MAIN_VARIANT (TREE_TYPE (rhs))))
+ if (BRACE_ENCLOSED_INITIALIZER_P (newrhs))
+ {
+ if (check_array_initializer (lhs, lhstype, newrhs))
+ return error_mark_node;
+ newrhs = digest_init (lhstype, newrhs);
+ }
+
+ else if (!same_or_base_type_p (TYPE_MAIN_VARIANT (lhstype),
+ TYPE_MAIN_VARIANT (TREE_TYPE (newrhs))))
{
if (complain & tf_error)
error ("incompatible types in assignment of %qT to %qT",
}
/* Allow array assignment in compiler-generated code. */
- if (!current_function_decl || !DECL_ARTIFICIAL (current_function_decl))
+ else if (!current_function_decl
+ || !DECL_ARTIFICIAL (current_function_decl))
{
/* This routine is used for both initialization and assignment.
Make sure the diagnostic message differentiates the context. */
result = get_delta_difference_1 (to, from, c_cast_p);
if (result)
- result = size_diffop (size_zero_node, result);
+ result = size_diffop_loc (input_location,
+ size_zero_node, result);
else
{
error_not_base_type (from, to);
/* If -Wparentheses, warn about a = b = c when a has type bool and b
does not. */
if (warn_parentheses
- && type == boolean_type_node
+ && TREE_CODE (type) == BOOLEAN_TYPE
&& TREE_CODE (rhs) == MODIFY_EXPR
&& !TREE_NO_WARNING (rhs)
- && TREE_TYPE (rhs) != boolean_type_node
+ && TREE_CODE (TREE_TYPE (rhs)) != BOOLEAN_TYPE
&& (complain & tf_warning))
{
- warning (OPT_Wparentheses,
- "suggest parentheses around assignment used as truth value");
+ location_t loc = EXPR_HAS_LOCATION (rhs)
+ ? EXPR_LOCATION (rhs) : input_location;
+
+ warning_at (loc, OPT_Wparentheses,
+ "suggest parentheses around assignment used as truth value");
TREE_NO_WARNING (rhs) = 1;
}
if (fndecl)
savew = warningcount, savee = errorcount;
rhs = initialize_reference (type, rhs, /*decl=*/NULL_TREE,
- /*cleanup=*/NULL);
+ /*cleanup=*/NULL, complain);
if (fndecl)
{
if (warningcount > savew)
type = complete_type (type);
+ if (DIRECT_INIT_EXPR_P (type, rhs))
+ /* Don't try to do copy-initialization if we already have
+ direct-initialization. */
+ return rhs;
+
if (MAYBE_CLASS_TYPE_P (type))
return ocp_convert (type, rhs, CONV_IMPLICIT|CONV_FORCE_TEMP, flags);
return NULL_TREE;
}
+ /* As an extension, deduce lambda return type from a return statement
+ anywhere in the body. */
+ if (retval && LAMBDA_FUNCTION_P (current_function_decl))
+ {
+ tree lambda = CLASSTYPE_LAMBDA_EXPR (current_class_type);
+ if (LAMBDA_EXPR_DEDUCE_RETURN_TYPE_P (lambda))
+ {
+ tree type = lambda_return_type (retval);
+ tree oldtype = LAMBDA_EXPR_RETURN_TYPE (lambda);
+
+ if (VOID_TYPE_P (type))
+ { /* Nothing. */ }
+ else if (oldtype == NULL_TREE)
+ {
+ pedwarn (input_location, OPT_pedantic, "lambda return type "
+ "can only be deduced when the return statement is "
+ "the only statement in the function body");
+ apply_lambda_return_type (lambda, type);
+ }
+ else if (!same_type_p (type, oldtype))
+ error ("inconsistent types %qT and %qT deduced for "
+ "lambda return type", type, oldtype);
+ }
+ }
+
if (processing_template_decl)
{
current_function_returns_value = 1;
return comp_ptr_ttypes_real (to, from, 1);
}
+/* Returns true iff FNTYPE is a non-class type that involves
+ error_mark_node. We can get FUNCTION_TYPE with buried error_mark_node
+ if a parameter type is ill-formed. */
+
+bool
+error_type_p (const_tree type)
+{
+ tree t;
+
+ switch (TREE_CODE (type))
+ {
+ case ERROR_MARK:
+ return true;
+
+ case POINTER_TYPE:
+ case REFERENCE_TYPE:
+ case OFFSET_TYPE:
+ return error_type_p (TREE_TYPE (type));
+
+ case FUNCTION_TYPE:
+ case METHOD_TYPE:
+ if (error_type_p (TREE_TYPE (type)))
+ return true;
+ for (t = TYPE_ARG_TYPES (type); t; t = TREE_CHAIN (t))
+ if (error_type_p (TREE_VALUE (t)))
+ return true;
+ return false;
+
+ case RECORD_TYPE:
+ if (TYPE_PTRMEMFUNC_P (type))
+ return error_type_p (TYPE_PTRMEMFUNC_FN_TYPE (type));
+ return false;
+
+ default:
+ return false;
+ }
+}
+
/* Returns 1 if to and from are (possibly multi-level) pointers to the same
type or inheritance-related types, regardless of cv-quals. */
for (; ; to = TREE_TYPE (to), from = TREE_TYPE (from))
{
/* Any target type is similar enough to void. */
- if (TREE_CODE (to) == VOID_TYPE
- || TREE_CODE (from) == VOID_TYPE)
- return 1;
+ if (TREE_CODE (to) == VOID_TYPE)
+ return !error_type_p (from);
+ if (TREE_CODE (from) == VOID_TYPE)
+ return !error_type_p (to);
if (TREE_CODE (to) != TREE_CODE (from))
return 0;
return 1;
if (TREE_CODE (to) == FUNCTION_TYPE)
- return 1;
+ return !error_type_p (to) && !error_type_p (from);
if (TREE_CODE (to) != POINTER_TYPE)
return comptypes
return TYPE_READONLY (type);
}
+/* Returns nonzero if TYPE is const or volatile. */
+
+bool
+cv_qualified_p (const_tree type)
+{
+ int quals = cp_type_quals (type);
+ return (quals & (TYPE_QUAL_CONST|TYPE_QUAL_VOLATILE)) != 0;
+}
+
/* Returns nonzero if the TYPE contains a mutable member. */
bool
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