You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
/* This file is part of the C front end.
static int function_types_compatible_p (tree, tree);
static int type_lists_compatible_p (tree, tree);
static tree decl_constant_value_for_broken_optimization (tree);
-static tree default_function_array_conversion (tree);
static tree lookup_field (tree, tree);
static tree convert_arguments (tree, tree, tree, tree);
static tree pointer_diff (tree, tree);
tree elt = composite_type (TREE_TYPE (t1), TREE_TYPE (t2));
int quals;
tree unqual_elt;
+ tree d1 = TYPE_DOMAIN (t1);
+ tree d2 = TYPE_DOMAIN (t2);
+ bool d1_variable, d2_variable;
+ bool d1_zero, d2_zero;
/* We should not have any type quals on arrays at all. */
gcc_assert (!TYPE_QUALS (t1) && !TYPE_QUALS (t2));
+ d1_zero = d1 == 0 || !TYPE_MAX_VALUE (d1);
+ d2_zero = d2 == 0 || !TYPE_MAX_VALUE (d2);
+
+ d1_variable = (!d1_zero
+ && (TREE_CODE (TYPE_MIN_VALUE (d1)) != INTEGER_CST
+ || TREE_CODE (TYPE_MAX_VALUE (d1)) != INTEGER_CST));
+ d2_variable = (!d2_zero
+ && (TREE_CODE (TYPE_MIN_VALUE (d2)) != INTEGER_CST
+ || TREE_CODE (TYPE_MAX_VALUE (d2)) != INTEGER_CST));
+
/* Save space: see if the result is identical to one of the args. */
- if (elt == TREE_TYPE (t1) && TYPE_DOMAIN (t1))
+ if (elt == TREE_TYPE (t1) && TYPE_DOMAIN (t1)
+ && (d2_variable || d2_zero || !d1_variable))
return build_type_attribute_variant (t1, attributes);
- if (elt == TREE_TYPE (t2) && TYPE_DOMAIN (t2))
+ if (elt == TREE_TYPE (t2) && TYPE_DOMAIN (t2)
+ && (d1_variable || d1_zero || !d2_variable))
return build_type_attribute_variant (t2, attributes);
if (elt == TREE_TYPE (t1) && !TYPE_DOMAIN (t2) && !TYPE_DOMAIN (t1))
quals = TYPE_QUALS (strip_array_types (elt));
unqual_elt = c_build_qualified_type (elt, TYPE_UNQUALIFIED);
t1 = build_array_type (unqual_elt,
- TYPE_DOMAIN (TYPE_DOMAIN (t1) ? t1 : t2));
+ TYPE_DOMAIN ((TYPE_DOMAIN (t1)
+ && (d2_variable
+ || d2_zero
+ || !d1_variable))
+ ? t1
+ : t2));
t1 = c_build_qualified_type (t1, quals);
return build_type_attribute_variant (t1, attributes);
}
return t2;
}
\f
-/* Wrapper around c_common_type that is used by c-common.c. ENUMERAL_TYPEs
+/* Wrapper around c_common_type that is used by c-common.c and other
+ front end optimizations that remove promotions. ENUMERAL_TYPEs
are allowed here and are converted to their compatible integer types.
BOOLEAN_TYPEs are allowed here and return either boolean_type_node or
preferably a non-Boolean type as the common type. */
return 0;
/* If one of these types comes from a non-prototype fn definition,
compare that with the other type's arglist.
- If they don't match, ask for a warning (0, but no error). */
+ If they don't match, ask for a warning (but no error). */
if (TYPE_ACTUAL_ARG_TYPES (f1)
&& 1 != type_lists_compatible_p (args2, TYPE_ACTUAL_ARG_TYPES (f1)))
val = 2;
return ret;
}
-
-/* Perform the default conversion of arrays and functions to pointers.
- Return the result of converting EXP. For any other expression, just
- return EXP. */
-
+/* Convert the array expression EXP to a pointer. */
static tree
-default_function_array_conversion (tree exp)
+array_to_pointer_conversion (tree exp)
{
- tree orig_exp;
+ tree orig_exp = exp;
tree type = TREE_TYPE (exp);
- enum tree_code code = TREE_CODE (type);
- int not_lvalue = 0;
+ tree adr;
+ tree restype = TREE_TYPE (type);
+ tree ptrtype;
- /* Strip NON_LVALUE_EXPRs and no-op conversions, since we aren't using as
- an lvalue.
+ gcc_assert (TREE_CODE (type) == ARRAY_TYPE);
- Do not use STRIP_NOPS here! It will remove conversions from pointer
- to integer and cause infinite recursion. */
- orig_exp = exp;
- while (TREE_CODE (exp) == NON_LVALUE_EXPR
- || (TREE_CODE (exp) == NOP_EXPR
- && TREE_TYPE (TREE_OPERAND (exp, 0)) == TREE_TYPE (exp)))
- {
- if (TREE_CODE (exp) == NON_LVALUE_EXPR)
- not_lvalue = 1;
- exp = TREE_OPERAND (exp, 0);
- }
+ STRIP_TYPE_NOPS (exp);
if (TREE_NO_WARNING (orig_exp))
TREE_NO_WARNING (exp) = 1;
- if (code == FUNCTION_TYPE)
+ ptrtype = build_pointer_type (restype);
+
+ if (TREE_CODE (exp) == INDIRECT_REF)
+ return convert (ptrtype, TREE_OPERAND (exp, 0));
+
+ if (TREE_CODE (exp) == VAR_DECL)
{
- return build_unary_op (ADDR_EXPR, exp, 0);
+ /* We are making an ADDR_EXPR of ptrtype. This is a valid
+ ADDR_EXPR because it's the best way of representing what
+ happens in C when we take the address of an array and place
+ it in a pointer to the element type. */
+ adr = build1 (ADDR_EXPR, ptrtype, exp);
+ if (!c_mark_addressable (exp))
+ return error_mark_node;
+ TREE_SIDE_EFFECTS (adr) = 0; /* Default would be, same as EXP. */
+ return adr;
}
- if (code == ARRAY_TYPE)
- {
- tree adr;
- tree restype = TREE_TYPE (type);
- tree ptrtype;
- int constp = 0;
- int volatilep = 0;
- int lvalue_array_p;
- if (REFERENCE_CLASS_P (exp) || DECL_P (exp))
- {
- constp = TREE_READONLY (exp);
- volatilep = TREE_THIS_VOLATILE (exp);
- }
+ /* This way is better for a COMPONENT_REF since it can
+ simplify the offset for a component. */
+ adr = build_unary_op (ADDR_EXPR, exp, 1);
+ return convert (ptrtype, adr);
+}
- if (TYPE_QUALS (type) || constp || volatilep)
- restype
- = c_build_qualified_type (restype,
- TYPE_QUALS (type)
- | (constp * TYPE_QUAL_CONST)
- | (volatilep * TYPE_QUAL_VOLATILE));
+/* Convert the function expression EXP to a pointer. */
+static tree
+function_to_pointer_conversion (tree exp)
+{
+ tree orig_exp = exp;
- if (TREE_CODE (exp) == INDIRECT_REF)
- return convert (build_pointer_type (restype),
- TREE_OPERAND (exp, 0));
+ gcc_assert (TREE_CODE (TREE_TYPE (exp)) == FUNCTION_TYPE);
- if (TREE_CODE (exp) == COMPOUND_EXPR)
- {
- tree op1 = default_conversion (TREE_OPERAND (exp, 1));
- return build2 (COMPOUND_EXPR, TREE_TYPE (op1),
- TREE_OPERAND (exp, 0), op1);
- }
+ STRIP_TYPE_NOPS (exp);
- lvalue_array_p = !not_lvalue && lvalue_p (exp);
- if (!flag_isoc99 && !lvalue_array_p)
- {
- /* Before C99, non-lvalue arrays do not decay to pointers.
- Normally, using such an array would be invalid; but it can
- be used correctly inside sizeof or as a statement expression.
- Thus, do not give an error here; an error will result later. */
- return exp;
- }
+ if (TREE_NO_WARNING (orig_exp))
+ TREE_NO_WARNING (exp) = 1;
- ptrtype = build_pointer_type (restype);
+ return build_unary_op (ADDR_EXPR, exp, 0);
+}
- if (TREE_CODE (exp) == VAR_DECL)
- {
- /* We are making an ADDR_EXPR of ptrtype. This is a valid
- ADDR_EXPR because it's the best way of representing what
- happens in C when we take the address of an array and place
- it in a pointer to the element type. */
- adr = build1 (ADDR_EXPR, ptrtype, exp);
- if (!c_mark_addressable (exp))
- return error_mark_node;
- TREE_SIDE_EFFECTS (adr) = 0; /* Default would be, same as EXP. */
- return adr;
- }
- /* This way is better for a COMPONENT_REF since it can
- simplify the offset for a component. */
- adr = build_unary_op (ADDR_EXPR, exp, 1);
- return convert (ptrtype, adr);
+/* Perform the default conversion of arrays and functions to pointers.
+ Return the result of converting EXP. For any other expression, just
+ return EXP after removing NOPs. */
+
+struct c_expr
+default_function_array_conversion (struct c_expr exp)
+{
+ tree orig_exp = exp.value;
+ tree type = TREE_TYPE (exp.value);
+ enum tree_code code = TREE_CODE (type);
+
+ switch (code)
+ {
+ case ARRAY_TYPE:
+ {
+ bool not_lvalue = false;
+ bool lvalue_array_p;
+
+ while ((TREE_CODE (exp.value) == NON_LVALUE_EXPR
+ || TREE_CODE (exp.value) == NOP_EXPR)
+ && TREE_TYPE (TREE_OPERAND (exp.value, 0)) == type)
+ {
+ if (TREE_CODE (exp.value) == NON_LVALUE_EXPR)
+ not_lvalue = true;
+ exp.value = TREE_OPERAND (exp.value, 0);
+ }
+
+ if (TREE_NO_WARNING (orig_exp))
+ TREE_NO_WARNING (exp.value) = 1;
+
+ lvalue_array_p = !not_lvalue && lvalue_p (exp.value);
+ if (!flag_isoc99 && !lvalue_array_p)
+ {
+ /* Before C99, non-lvalue arrays do not decay to pointers.
+ Normally, using such an array would be invalid; but it can
+ be used correctly inside sizeof or as a statement expression.
+ Thus, do not give an error here; an error will result later. */
+ return exp;
+ }
+
+ exp.value = array_to_pointer_conversion (exp.value);
+ }
+ break;
+ case FUNCTION_TYPE:
+ exp.value = function_to_pointer_conversion (exp.value);
+ break;
+ default:
+ STRIP_TYPE_NOPS (exp.value);
+ if (TREE_NO_WARNING (orig_exp))
+ TREE_NO_WARNING (exp.value) = 1;
+ break;
}
+
return exp;
}
/* Perform default promotions for C data used in expressions.
- Arrays and functions are converted to pointers;
- enumeral types or short or char, to int.
+ Enumeral types or short or char are converted to int.
In addition, manifest constants symbols are replaced by their values. */
tree
tree type = TREE_TYPE (exp);
enum tree_code code = TREE_CODE (type);
- if (code == FUNCTION_TYPE || code == ARRAY_TYPE)
- return default_function_array_conversion (exp);
+ /* Functions and arrays have been converted during parsing. */
+ gcc_assert (code != FUNCTION_TYPE);
+ if (code == ARRAY_TYPE)
+ return exp;
/* Constants can be used directly unless they're not loadable. */
if (TREE_CODE (exp) == CONST_DECL)
deliberately. ??? Existing practice has also been to warn only
when the char index is syntactically the index, not for
char[array]. */
- if (warn_char_subscripts && !swapped
+ if (!swapped
&& TYPE_MAIN_VARIANT (TREE_TYPE (index)) == char_type_node)
- warning (0, "array subscript has type %<char%>");
+ warning (OPT_Wchar_subscripts, "array subscript has type %<char%>");
/* Apply default promotions *after* noticing character types. */
index = default_conversion (index);
return tem;
name = DECL_NAME (function);
-
- /* Differs from default_conversion by not setting TREE_ADDRESSABLE
- (because calling an inline function does not mean the function
- needs to be separately compiled). */
- fntype = build_type_variant (TREE_TYPE (function),
- TREE_READONLY (function),
- TREE_THIS_VOLATILE (function));
fundecl = function;
- function = build1 (ADDR_EXPR, build_pointer_type (fntype), function);
}
- else
- function = default_conversion (function);
+ if (TREE_CODE (TREE_TYPE (function)) == FUNCTION_TYPE)
+ function = function_to_pointer_conversion (function);
/* For Objective-C, convert any calls via a cast to OBJC_TYPE_REF
expressions, like those used for ObjC messenger dispatches. */
if (AGGREGATE_TYPE_P (return_type))
rhs = build_compound_literal (return_type,
- build_constructor (return_type,
- NULL_TREE));
+ build_constructor (return_type, 0));
else
- rhs = fold (build1 (NOP_EXPR, return_type, integer_zero_node));
+ rhs = fold_build1 (NOP_EXPR, return_type, integer_zero_node);
return build2 (COMPOUND_EXPR, return_type, trap, rhs);
}
/* Check that the arguments to the function are valid. */
- check_function_arguments (TYPE_ATTRIBUTES (fntype), coerced_params);
-
- result = build3 (CALL_EXPR, TREE_TYPE (fntype),
- function, coerced_params, NULL_TREE);
- TREE_SIDE_EFFECTS (result) = 1;
+ check_function_arguments (TYPE_ATTRIBUTES (fntype), coerced_params,
+ TYPE_ARG_TYPES (fntype));
if (require_constant_value)
{
- result = fold_initializer (result);
+ result = fold_build3_initializer (CALL_EXPR, TREE_TYPE (fntype),
+ function, coerced_params, NULL_TREE);
if (TREE_CONSTANT (result)
&& (name == NULL_TREE
pedwarn_init ("initializer element is not constant");
}
else
- result = fold (result);
+ result = fold_build3 (CALL_EXPR, TREE_TYPE (fntype),
+ function, coerced_params, NULL_TREE);
if (VOID_TYPE_P (TREE_TYPE (result)))
return result;
STRIP_TYPE_NOPS (val);
- val = default_function_array_conversion (val);
-
val = require_complete_type (val);
if (type != 0)
and the actual arg is that enum type. */
;
else if (formal_prec != TYPE_PRECISION (type1))
- warning (0, "passing argument %d of %qE with different "
- "width due to prototype", argnum, rname);
+ warning (OPT_Wconversion, "passing argument %d of %qE "
+ "with different width due to prototype",
+ argnum, rname);
else if (TYPE_UNSIGNED (type) == TYPE_UNSIGNED (type1))
;
/* Don't complain if the formal parameter type
&& TYPE_UNSIGNED (TREE_TYPE (val)))
;
else if (TYPE_UNSIGNED (type))
- warning (0, "passing argument %d of %qE as unsigned "
- "due to prototype", argnum, rname);
+ warning (OPT_Wconversion, "passing argument %d of %qE "
+ "as unsigned due to prototype",
+ argnum, rname);
else
- warning (0, "passing argument %d of %qE as signed "
- "due to prototype", argnum, rname);
+ warning (OPT_Wconversion, "passing argument %d of %qE "
+ "as signed due to prototype", argnum, rname);
}
}
{
if (code1 == PLUS_EXPR || code1 == MINUS_EXPR
|| code2 == PLUS_EXPR || code2 == MINUS_EXPR)
- warning (0, "suggest parentheses around + or - inside shift");
+ warning (OPT_Wparentheses,
+ "suggest parentheses around + or - inside shift");
}
if (code == TRUTH_ORIF_EXPR)
{
if (code1 == TRUTH_ANDIF_EXPR
|| code2 == TRUTH_ANDIF_EXPR)
- warning (0, "suggest parentheses around && within ||");
+ warning (OPT_Wparentheses,
+ "suggest parentheses around && within ||");
}
if (code == BIT_IOR_EXPR)
|| code1 == PLUS_EXPR || code1 == MINUS_EXPR
|| code2 == BIT_AND_EXPR || code2 == BIT_XOR_EXPR
|| code2 == PLUS_EXPR || code2 == MINUS_EXPR)
- warning (0, "suggest parentheses around arithmetic in operand of |");
+ warning (OPT_Wparentheses,
+ "suggest parentheses around arithmetic in operand of |");
/* Check cases like x|y==z */
if (TREE_CODE_CLASS (code1) == tcc_comparison
|| TREE_CODE_CLASS (code2) == tcc_comparison)
- warning (0, "suggest parentheses around comparison in operand of |");
+ warning (OPT_Wparentheses,
+ "suggest parentheses around comparison in operand of |");
}
if (code == BIT_XOR_EXPR)
|| code1 == PLUS_EXPR || code1 == MINUS_EXPR
|| code2 == BIT_AND_EXPR
|| code2 == PLUS_EXPR || code2 == MINUS_EXPR)
- warning (0, "suggest parentheses around arithmetic in operand of ^");
+ warning (OPT_Wparentheses,
+ "suggest parentheses around arithmetic in operand of ^");
/* Check cases like x^y==z */
if (TREE_CODE_CLASS (code1) == tcc_comparison
|| TREE_CODE_CLASS (code2) == tcc_comparison)
- warning (0, "suggest parentheses around comparison in operand of ^");
+ warning (OPT_Wparentheses,
+ "suggest parentheses around comparison in operand of ^");
}
if (code == BIT_AND_EXPR)
{
if (code1 == PLUS_EXPR || code1 == MINUS_EXPR
|| code2 == PLUS_EXPR || code2 == MINUS_EXPR)
- warning (0, "suggest parentheses around + or - in operand of &");
+ warning (OPT_Wparentheses,
+ "suggest parentheses around + or - in operand of &");
/* Check cases like x&y==z */
if (TREE_CODE_CLASS (code1) == tcc_comparison
|| TREE_CODE_CLASS (code2) == tcc_comparison)
- warning (0, "suggest parentheses around comparison in operand of &");
+ warning (OPT_Wparentheses,
+ "suggest parentheses around comparison in operand of &");
}
/* Similarly, check for cases like 1<=i<=10 that are probably errors. */
if (TREE_CODE_CLASS (code) == tcc_comparison
&& (TREE_CODE_CLASS (code1) == tcc_comparison
|| TREE_CODE_CLASS (code2) == tcc_comparison))
- warning (0, "comparisons like X<=Y<=Z do not have their mathematical meaning");
+ warning (OPT_Wparentheses, "comparisons like X<=Y<=Z do not "
+ "have their mathematical meaning");
}
op1 = c_size_in_bytes (target_type);
/* Divide by the size, in easiest possible way. */
- return fold (build2 (EXACT_DIV_EXPR, restype, op0, convert (restype, op1)));
+ return fold_build2 (EXACT_DIV_EXPR, restype, op0, convert (restype, op1));
}
\f
/* Construct and perhaps optimize a tree representation
enum tree_code typecode = TREE_CODE (TREE_TYPE (arg));
tree val;
int noconvert = flag;
+ const char *invalid_op_diag;
if (typecode == ERROR_MARK)
return error_mark_node;
if (typecode == ENUMERAL_TYPE || typecode == BOOLEAN_TYPE)
typecode = INTEGER_TYPE;
+ if ((invalid_op_diag
+ = targetm.invalid_unary_op (code, TREE_TYPE (xarg))))
+ {
+ error (invalid_op_diag);
+ return error_mark_node;
+ }
+
switch (code)
{
case CONVERT_EXPR:
break;
case TRUTH_NOT_EXPR:
- /* ??? Why do most validation here but that for non-lvalue arrays
- in c_objc_common_truthvalue_conversion? */
if (typecode != INTEGER_TYPE
&& typecode != REAL_TYPE && typecode != POINTER_TYPE
- && typecode != COMPLEX_TYPE
- /* These will convert to a pointer. */
- && typecode != ARRAY_TYPE && typecode != FUNCTION_TYPE)
+ && typecode != COMPLEX_TYPE)
{
error ("wrong type argument to unary exclamation mark");
return error_mark_node;
if (TREE_CODE (arg) == COMPLEX_CST)
return TREE_REALPART (arg);
else if (TREE_CODE (TREE_TYPE (arg)) == COMPLEX_TYPE)
- return fold (build1 (REALPART_EXPR, TREE_TYPE (TREE_TYPE (arg)), arg));
+ return fold_build1 (REALPART_EXPR, TREE_TYPE (TREE_TYPE (arg)), arg);
else
return arg;
if (TREE_CODE (arg) == COMPLEX_CST)
return TREE_IMAGPART (arg);
else if (TREE_CODE (TREE_TYPE (arg)) == COMPLEX_TYPE)
- return fold (build1 (IMAGPART_EXPR, TREE_TYPE (TREE_TYPE (arg)), arg));
+ return fold_build1 (IMAGPART_EXPR, TREE_TYPE (TREE_TYPE (arg)), arg);
else
return convert (TREE_TYPE (arg), integer_zero_node);
/* For &x[y], return x+y */
if (TREE_CODE (arg) == ARRAY_REF)
{
- if (!c_mark_addressable (TREE_OPERAND (arg, 0)))
+ tree op0 = TREE_OPERAND (arg, 0);
+ if (!c_mark_addressable (op0))
return error_mark_node;
- return build_binary_op (PLUS_EXPR, TREE_OPERAND (arg, 0),
+ return build_binary_op (PLUS_EXPR,
+ (TREE_CODE (TREE_TYPE (op0)) == ARRAY_TYPE
+ ? array_to_pointer_conversion (op0)
+ : op0),
TREE_OPERAND (arg, 1), 1);
}
val = build1 (ADDR_EXPR, argtype, arg);
- if (TREE_CODE (arg) == COMPOUND_LITERAL_EXPR)
- TREE_INVARIANT (val) = TREE_CONSTANT (val) = 1;
-
return val;
default:
if (argtype == 0)
argtype = TREE_TYPE (arg);
- val = build1 (code, argtype, arg);
- return require_constant_value ? fold_initializer (val) : fold (val);
+ return require_constant_value ? fold_build1_initializer (code, argtype, arg)
+ : fold_build1 (code, argtype, arg);
}
/* Return nonzero if REF is an lvalue valid for this language.
tree
build_compound_expr (tree expr1, tree expr2)
{
- /* Convert arrays and functions to pointers. */
- expr2 = default_function_array_conversion (expr2);
-
if (!TREE_SIDE_EFFECTS (expr1))
{
/* The left-hand operand of a comma expression is like an expression
else if (TREE_CODE (type) == UNION_TYPE)
{
tree field;
- value = default_function_array_conversion (value);
for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field))
if (comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (field)),
if (pedantic)
pedwarn ("ISO C forbids casts to union type");
t = digest_init (type,
- build_constructor (type,
- build_tree_list (field, value)),
+ build_constructor_single (type, field, value),
true, 0);
TREE_CONSTANT (t) = TREE_CONSTANT (value);
TREE_INVARIANT (t) = TREE_INVARIANT (value);
{
tree otype, ovalue;
- /* If casting to void, avoid the error that would come
- from default_conversion in the case of a non-lvalue array. */
if (type == void_type_node)
return build1 (CONVERT_EXPR, type, value);
- /* Convert functions and arrays to pointers,
- but don't convert any other types. */
- value = default_function_array_conversion (value);
otype = TREE_TYPE (value);
/* Optionally warn about potentially worrisome casts. */
}
/* Warn about possible alignment problems. */
- if (STRICT_ALIGNMENT && warn_cast_align
+ if (STRICT_ALIGNMENT
&& TREE_CODE (type) == POINTER_TYPE
&& TREE_CODE (otype) == POINTER_TYPE
&& TREE_CODE (TREE_TYPE (otype)) != VOID_TYPE
|| TREE_CODE (TREE_TYPE (otype)) == RECORD_TYPE)
&& TYPE_MODE (TREE_TYPE (otype)) == VOIDmode)
&& TYPE_ALIGN (TREE_TYPE (type)) > TYPE_ALIGN (TREE_TYPE (otype)))
- warning (0, "cast increases required alignment of target type");
+ warning (OPT_Wcast_align,
+ "cast increases required alignment of target type");
- if (warn_pointer_to_int_cast
- && TREE_CODE (type) == INTEGER_TYPE
+ if (TREE_CODE (type) == INTEGER_TYPE
&& TREE_CODE (otype) == POINTER_TYPE
&& TYPE_PRECISION (type) != TYPE_PRECISION (otype)
&& !TREE_CONSTANT (value))
- warning (0, "cast from pointer to integer of different size");
+ warning (OPT_Wpointer_to_int_cast,
+ "cast from pointer to integer of different size");
- if (warn_bad_function_cast
- && TREE_CODE (value) == CALL_EXPR
+ if (TREE_CODE (value) == CALL_EXPR
&& TREE_CODE (type) != TREE_CODE (otype))
- warning (0, "cast from function call of type %qT to non-matching "
- "type %qT", otype, type);
+ warning (OPT_Wbad_function_cast, "cast from function call of type %qT "
+ "to non-matching type %qT", otype, type);
- if (warn_int_to_pointer_cast
- && TREE_CODE (type) == POINTER_TYPE
+ if (TREE_CODE (type) == POINTER_TYPE
&& TREE_CODE (otype) == INTEGER_TYPE
&& TYPE_PRECISION (type) != TYPE_PRECISION (otype)
/* Don't warn about converting any constant. */
&& !TREE_CONSTANT (value))
- warning (0, "cast to pointer from integer of different size");
+ warning (OPT_Wint_to_pointer_cast, "cast to pointer from integer "
+ "of different size");
if (flag_strict_aliasing && warn_strict_aliasing
&& TREE_CODE (type) == POINTER_TYPE
/* Casting the address of an object to non void pointer. Warn
if the cast breaks type based aliasing. */
if (!COMPLETE_TYPE_P (TREE_TYPE (type)))
- warning (0, "type-punning to incomplete type might break strict-aliasing rules");
+ warning (OPT_Wstrict_aliasing, "type-punning to incomplete type "
+ "might break strict-aliasing rules");
else
{
HOST_WIDE_INT set1 = get_alias_set (TREE_TYPE (TREE_OPERAND (expr, 0)));
HOST_WIDE_INT set2 = get_alias_set (TREE_TYPE (type));
if (!alias_sets_conflict_p (set1, set2))
- warning (0, "dereferencing type-punned pointer will break strict-aliasing rules");
+ warning (OPT_Wstrict_aliasing, "dereferencing type-punned "
+ "pointer will break strict-aliasing rules");
else if (warn_strict_aliasing > 1
&& !alias_sets_might_conflict_p (set1, set2))
- warning (0, "dereferencing type-punned pointer might break strict-aliasing rules");
+ warning (OPT_Wstrict_aliasing, "dereferencing type-punned "
+ "pointer might break strict-aliasing rules");
}
}
/* Ignore any integer overflow caused by the cast. */
if (TREE_CODE (value) == INTEGER_CST)
{
- if (EXPR_P (ovalue))
- /* If OVALUE had overflow set, then so will VALUE, so it
- is safe to overwrite. */
- TREE_OVERFLOW (value) = TREE_OVERFLOW (ovalue);
+ /* If OVALUE had overflow set, then so will VALUE, so it
+ is safe to overwrite. */
+ if (CONSTANT_CLASS_P (ovalue))
+ {
+ TREE_OVERFLOW (value) = TREE_OVERFLOW (ovalue);
+ /* Similarly, constant_overflow cannot have become cleared. */
+ TREE_CONSTANT_OVERFLOW (value) = TREE_CONSTANT_OVERFLOW (ovalue);
+ }
else
TREE_OVERFLOW (value) = 0;
-
- if (CONSTANT_CLASS_P (ovalue))
- /* Similarly, constant_overflow cannot have become
- cleared. */
- TREE_CONSTANT_OVERFLOW (value) = TREE_CONSTANT_OVERFLOW (ovalue);
}
}
STRIP_TYPE_NOPS (rhs);
- if (TREE_CODE (TREE_TYPE (rhs)) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE (rhs)) == FUNCTION_TYPE)
- rhs = default_conversion (rhs);
- else if (optimize && TREE_CODE (rhs) == VAR_DECL)
+ if (optimize && TREE_CODE (rhs) == VAR_DECL
+ && TREE_CODE (TREE_TYPE (rhs)) != ARRAY_TYPE)
rhs = decl_constant_value_for_broken_optimization (rhs);
rhstype = TREE_TYPE (rhs);
"pointer target type"));
}
- if (pedantic && !DECL_IN_SYSTEM_HEADER (fundecl))
+ if (pedantic && (!fundecl || !DECL_IN_SYSTEM_HEADER (fundecl)))
pedwarn ("ISO C prohibits argument conversion to union type");
return build1 (NOP_EXPR, type, rhs);
warning (OPT_Wc___compat, "request for implicit conversion from "
"%qT to %qT not permitted in C++", rhstype, type);
+ /* Check if the right-hand side has a format attribute but the
+ left-hand side doesn't. */
+ if (warn_missing_format_attribute
+ && check_missing_format_attribute (type, rhstype))
+ {
+ switch (errtype)
+ {
+ case ic_argpass:
+ case ic_argpass_nonproto:
+ warning (OPT_Wmissing_format_attribute,
+ "argument %d of %qE might be "
+ "a candidate for a format attribute",
+ parmnum, rname);
+ break;
+ case ic_assign:
+ warning (OPT_Wmissing_format_attribute,
+ "assignment left-hand side might be "
+ "a candidate for a format attribute");
+ break;
+ case ic_init:
+ warning (OPT_Wmissing_format_attribute,
+ "initialization left-hand side might be "
+ "a candidate for a format attribute");
+ break;
+ case ic_return:
+ warning (OPT_Wmissing_format_attribute,
+ "return type might be "
+ "a candidate for a format attribute");
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ }
+
/* Any non-function converts to a [const][volatile] void *
and vice versa; otherwise, targets must be the same.
Meanwhile, the lhs target must have all the qualifiers of the rhs. */
/* Store the expression if valid; else report error. */
- if (warn_traditional && !in_system_header
+ if (!in_system_header
&& AGGREGATE_TYPE_P (TREE_TYPE (decl)) && !TREE_STATIC (decl))
- warning (0, "traditional C rejects automatic aggregate initialization");
+ warning (OPT_Wtraditional, "traditional C rejects automatic "
+ "aggregate initialization");
DECL_INITIAL (decl) = value;
if (TREE_CODE (inside_init) == CONSTRUCTOR)
{
- tree link;
+ unsigned HOST_WIDE_INT ix;
+ tree value;
+ bool constant_p = true;
/* Iterate through elements and check if all constructor
elements are *_CSTs. */
- for (link = CONSTRUCTOR_ELTS (inside_init);
- link;
- link = TREE_CHAIN (link))
- if (! CONSTANT_CLASS_P (TREE_VALUE (link)))
- break;
+ FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (inside_init), ix, value)
+ if (!CONSTANT_CLASS_P (value))
+ {
+ constant_p = false;
+ break;
+ }
- if (link == NULL)
- return build_vector (type, CONSTRUCTOR_ELTS (inside_init));
+ if (constant_p)
+ return build_vector_from_ctor (type,
+ CONSTRUCTOR_ELTS (inside_init));
}
}
|| (code == POINTER_TYPE
&& TREE_CODE (TREE_TYPE (inside_init)) == ARRAY_TYPE
&& comptypes (TREE_TYPE (TREE_TYPE (inside_init)),
- TREE_TYPE (type)))
- || (code == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (inside_init)) == FUNCTION_TYPE
- && comptypes (TREE_TYPE (inside_init),
TREE_TYPE (type)))))
{
if (code == POINTER_TYPE)
{
- inside_init = default_function_array_conversion (inside_init);
-
if (TREE_CODE (TREE_TYPE (inside_init)) == ARRAY_TYPE)
{
- error_init ("invalid use of non-lvalue array");
- return error_mark_node;
+ if (TREE_CODE (inside_init) == STRING_CST
+ || TREE_CODE (inside_init) == COMPOUND_LITERAL_EXPR)
+ inside_init = array_to_pointer_conversion (inside_init);
+ else
+ {
+ error_init ("invalid use of non-lvalue array");
+ return error_mark_node;
+ }
}
- }
+ }
if (code == VECTOR_TYPE)
/* Although the types are compatible, we may require a
inside_init = error_mark_node;
}
+ /* Added to enable additional -Wmissing-format-attribute warnings. */
+ if (TREE_CODE (TREE_TYPE (inside_init)) == POINTER_TYPE)
+ inside_init = convert_for_assignment (type, inside_init, ic_init, NULL_TREE,
+ NULL_TREE, 0);
return inside_init;
}
|| code == ENUMERAL_TYPE || code == BOOLEAN_TYPE || code == COMPLEX_TYPE
|| code == VECTOR_TYPE)
{
- /* Note that convert_for_assignment calls default_conversion
- for arrays and functions. We must not call it in the
- case where inside_init is a null pointer constant. */
+ if (TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE
+ && (TREE_CODE (init) == STRING_CST
+ || TREE_CODE (init) == COMPOUND_LITERAL_EXPR))
+ init = array_to_pointer_conversion (init);
inside_init
= convert_for_assignment (type, init, ic_init,
NULL_TREE, NULL_TREE, 0);
/* If we are saving up the elements rather than allocating them,
this is the list of elements so far (in reverse order,
most recent first). */
-static tree constructor_elements;
+static VEC(constructor_elt,gc) *constructor_elements;
/* 1 if constructor should be incrementally stored into a constructor chain,
0 if all the elements should be kept in AVL tree. */
static int designator_depth;
/* Nonzero if there were diagnosed errors in this designator list. */
-static int designator_errorneous;
+static int designator_erroneous;
\f
/* This stack has a level for each implicit or explicit level of
tree unfilled_index;
tree unfilled_fields;
tree bit_index;
- tree elements;
+ VEC(constructor_elt,gc) *elements;
struct init_node *pending_elts;
int offset;
int depth;
tree decl;
struct constructor_stack *constructor_stack;
struct constructor_range_stack *constructor_range_stack;
- tree elements;
+ VEC(constructor_elt,gc) *elements;
struct spelling *spelling;
struct spelling *spelling_base;
int spelling_size;
constructor_incremental = 1;
constructor_designated = 0;
designator_depth = 0;
- designator_errorneous = 0;
+ designator_erroneous = 0;
if (TREE_CODE (constructor_type) == RECORD_TYPE
|| TREE_CODE (constructor_type) == UNION_TYPE)
p->range_stack = constructor_range_stack;
constructor_range_stack = 0;
designator_depth = 0;
- designator_errorneous = 0;
+ designator_erroneous = 0;
}
/* Don't die if an entire brace-pair level is superfluous
constructor_constant = TREE_CONSTANT (value);
constructor_simple = TREE_STATIC (value);
constructor_elements = CONSTRUCTOR_ELTS (value);
- if (constructor_elements
+ if (!VEC_empty (constructor_elt, constructor_elements)
&& (TREE_CODE (constructor_type) == RECORD_TYPE
|| TREE_CODE (constructor_type) == ARRAY_TYPE))
set_nonincremental_init ();
{
/* A nonincremental scalar initializer--just return
the element, after verifying there is just one. */
- if (constructor_elements == 0)
+ if (VEC_empty (constructor_elt,constructor_elements))
{
if (!constructor_erroneous)
error_init ("empty scalar initializer");
ret.value = error_mark_node;
}
- else if (TREE_CHAIN (constructor_elements) != 0)
+ else if (VEC_length (constructor_elt,constructor_elements) != 1)
{
error_init ("extra elements in scalar initializer");
- ret.value = TREE_VALUE (constructor_elements);
+ ret.value = VEC_index (constructor_elt,constructor_elements,0)->value;
}
else
- ret.value = TREE_VALUE (constructor_elements);
+ ret.value = VEC_index (constructor_elt,constructor_elements,0)->value;
}
else
{
else
{
ret.value = build_constructor (constructor_type,
- nreverse (constructor_elements));
+ constructor_elements);
if (constructor_constant)
TREE_CONSTANT (ret.value) = TREE_INVARIANT (ret.value) = 1;
if (constructor_constant && constructor_simple)
/* If there were errors in this designator list already, bail out
silently. */
- if (designator_errorneous)
+ if (designator_erroneous)
return 1;
if (!designator_depth)
if (set_designator (1))
return;
- designator_errorneous = 1;
+ designator_erroneous = 1;
if (!INTEGRAL_TYPE_P (TREE_TYPE (first))
|| (last && !INTEGRAL_TYPE_P (TREE_TYPE (last))))
}
designator_depth++;
- designator_errorneous = 0;
+ designator_erroneous = 0;
if (constructor_range_stack || last)
push_range_stack (last);
}
if (set_designator (0))
return;
- designator_errorneous = 1;
+ designator_erroneous = 1;
if (TREE_CODE (constructor_type) != RECORD_TYPE
&& TREE_CODE (constructor_type) != UNION_TYPE)
{
constructor_fields = tail;
designator_depth++;
- designator_errorneous = 0;
+ designator_erroneous = 0;
if (constructor_range_stack)
push_range_stack (NULL_TREE);
}
static void
set_nonincremental_init (void)
{
- tree chain;
+ unsigned HOST_WIDE_INT ix;
+ tree index, value;
if (TREE_CODE (constructor_type) != RECORD_TYPE
&& TREE_CODE (constructor_type) != ARRAY_TYPE)
return;
- for (chain = constructor_elements; chain; chain = TREE_CHAIN (chain))
- add_pending_init (TREE_PURPOSE (chain), TREE_VALUE (chain));
+ FOR_EACH_CONSTRUCTOR_ELT (constructor_elements, ix, index, value)
+ add_pending_init (index, value);
constructor_elements = 0;
if (TREE_CODE (constructor_type) == RECORD_TYPE)
{
}
else if (TREE_CODE (constructor_type) == UNION_TYPE)
{
- if (constructor_elements
- && TREE_PURPOSE (constructor_elements) == field)
- return TREE_VALUE (constructor_elements);
+ if (!VEC_empty (constructor_elt, constructor_elements)
+ && (VEC_last (constructor_elt, constructor_elements)->index
+ == field))
+ return VEC_last (constructor_elt, constructor_elements)->value;
}
return 0;
}
output_init_element (tree value, bool strict_string, tree type, tree field,
int pending)
{
+ constructor_elt *celt;
+
if (type == error_mark_node || value == error_mark_node)
{
constructor_erroneous = 1;
return;
}
- if (TREE_CODE (TREE_TYPE (value)) == FUNCTION_TYPE
- || (TREE_CODE (TREE_TYPE (value)) == ARRAY_TYPE
- && !(TREE_CODE (value) == STRING_CST
- && TREE_CODE (type) == ARRAY_TYPE
- && INTEGRAL_TYPE_P (TREE_TYPE (type)))
- && !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (value)),
- TYPE_MAIN_VARIANT (type))))
- value = default_conversion (value);
+ if (TREE_CODE (TREE_TYPE (value)) == ARRAY_TYPE
+ && (TREE_CODE (value) == STRING_CST
+ || TREE_CODE (value) == COMPOUND_LITERAL_EXPR)
+ && !(TREE_CODE (value) == STRING_CST
+ && TREE_CODE (type) == ARRAY_TYPE
+ && INTEGRAL_TYPE_P (TREE_TYPE (type)))
+ && !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (value)),
+ TYPE_MAIN_VARIANT (type)))
+ value = array_to_pointer_conversion (value);
if (TREE_CODE (value) == COMPOUND_LITERAL_EXPR
&& require_constant_value && !flag_isoc99 && pending)
return;
}
else if (TREE_CODE (constructor_type) == UNION_TYPE
- && constructor_elements)
+ && !VEC_empty (constructor_elt, constructor_elements))
{
- if (TREE_SIDE_EFFECTS (TREE_VALUE (constructor_elements)))
+ if (TREE_SIDE_EFFECTS (VEC_last (constructor_elt,
+ constructor_elements)->value))
warning_init ("initialized field with side-effects overwritten");
/* We can have just one union field set. */
/* Otherwise, output this element either to
constructor_elements or to the assembler file. */
- if (field && TREE_CODE (field) == INTEGER_CST)
- field = copy_node (field);
- constructor_elements
- = tree_cons (field, value, constructor_elements);
+ celt = VEC_safe_push (constructor_elt, gc, constructor_elements, NULL);
+ celt->index = field;
+ celt->value = value;
/* Advance the variable that indicates sequential elements output. */
if (TREE_CODE (constructor_type) == ARRAY_TYPE)
bool strict_string = value.original_code == STRING_CST;
designator_depth = 0;
- designator_errorneous = 0;
+ designator_erroneous = 0;
/* Handle superfluous braces around string cst as in
char x[] = {"foo"}; */
again on the assumption that this must be conditional on
__STDC__ anyway (and we've already complained about the
member-designator already). */
- if (warn_traditional && !in_system_header && !constructor_designated
+ if (!in_system_header && !constructor_designated
&& !(value.value && (integer_zerop (value.value)
|| real_zerop (value.value))))
- warning (0, "traditional C rejects initialization of unions");
+ warning (OPT_Wtraditional, "traditional C rejects initialization "
+ "of unions");
/* Accept a string constant to initialize a subarray. */
if (value.value != 0
TREE_VALUE (tail) = output;
}
- /* Perform default conversions on array and function inputs.
- Don't do this for other types as it would screw up operands
- expected to be in memory. */
for (i = 0, tail = inputs; tail; ++i, tail = TREE_CHAIN (tail))
{
tree input;
constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (tail)));
input = TREE_VALUE (tail);
- input = default_function_array_conversion (input);
-
if (parse_input_constraint (&constraint, i, ninputs, noutputs, 0,
oconstraints, &allows_mem, &allows_reg))
{
tree
c_finish_return (tree retval)
{
- tree valtype = TREE_TYPE (TREE_TYPE (current_function_decl));
+ tree valtype = TREE_TYPE (TREE_TYPE (current_function_decl)), ret_stmt;
+ bool no_warning = false;
if (TREE_THIS_VOLATILE (current_function_decl))
warning (0, "function declared %<noreturn%> has a %<return%> statement");
current_function_returns_null = 1;
if ((warn_return_type || flag_isoc99)
&& valtype != 0 && TREE_CODE (valtype) != VOID_TYPE)
- pedwarn_c99 ("%<return%> with no value, in "
- "function returning non-void");
+ {
+ pedwarn_c99 ("%<return%> with no value, in "
+ "function returning non-void");
+ no_warning = true;
+ }
}
else if (valtype == 0 || TREE_CODE (valtype) == VOID_TYPE)
{
retval = build2 (MODIFY_EXPR, TREE_TYPE (res), res, t);
}
- return add_stmt (build_stmt (RETURN_EXPR, retval));
+ ret_stmt = build_stmt (RETURN_EXPR, retval);
+ TREE_NO_WARNING (ret_stmt) |= no_warning;
+ return add_stmt (ret_stmt);
}
\f
struct c_switch {
{
type = TYPE_MAIN_VARIANT (TREE_TYPE (exp));
- if (warn_traditional && !in_system_header
+ if (!in_system_header
&& (type == long_integer_type_node
|| type == long_unsigned_type_node))
- warning (0, "%<long%> switch expression not converted to "
- "%<int%> in ISO C");
+ warning (OPT_Wtraditional, "%<long%> switch expression not "
+ "converted to %<int%> in ISO C");
exp = default_conversion (exp);
type = TREE_TYPE (exp);
found:
if (COND_EXPR_ELSE (inner_if))
- warning (0, "%Hsuggest explicit braces to avoid ambiguous %<else%>",
+ warning (OPT_Wparentheses,
+ "%Hsuggest explicit braces to avoid ambiguous %<else%>",
&if_locus);
}
/* Diagnose ";" via the special empty statement node that we create. */
if (extra_warnings)
{
- if (TREE_CODE (then_block) == NOP_EXPR && !TREE_TYPE (then_block))
+ tree *inner_then = &then_block, *inner_else = &else_block;
+
+ if (TREE_CODE (*inner_then) == STATEMENT_LIST
+ && STATEMENT_LIST_TAIL (*inner_then))
+ inner_then = &STATEMENT_LIST_TAIL (*inner_then)->stmt;
+ if (*inner_else && TREE_CODE (*inner_else) == STATEMENT_LIST
+ && STATEMENT_LIST_TAIL (*inner_else))
+ inner_else = &STATEMENT_LIST_TAIL (*inner_else)->stmt;
+
+ if (TREE_CODE (*inner_then) == NOP_EXPR && !TREE_TYPE (*inner_then))
{
- if (!else_block)
+ if (!*inner_else)
warning (0, "%Hempty body in an if-statement",
- EXPR_LOCUS (then_block));
- then_block = alloc_stmt_list ();
+ EXPR_LOCUS (*inner_then));
+
+ *inner_then = alloc_stmt_list ();
}
- if (else_block
- && TREE_CODE (else_block) == NOP_EXPR
- && !TREE_TYPE (else_block))
+ if (*inner_else
+ && TREE_CODE (*inner_else) == NOP_EXPR
+ && !TREE_TYPE (*inner_else))
{
warning (0, "%Hempty body in an else-statement",
- EXPR_LOCUS (else_block));
- else_block = alloc_stmt_list ();
+ EXPR_LOCUS (*inner_else));
+
+ *inner_else = alloc_stmt_list ();
}
}
}
t = build_and_jump (&blab);
- exit = build3 (COND_EXPR, void_type_node, cond, exit, t);
- exit = fold (exit);
+ exit = fold_build3 (COND_EXPR, void_type_node, cond, exit, t);
if (cond_is_first)
SET_EXPR_LOCATION (exit, start_locus);
else
if (!expr)
return NULL_TREE;
- /* Do default conversion if safe and possibly important,
- in case within ({...}). */
- if ((TREE_CODE (TREE_TYPE (expr)) == ARRAY_TYPE
- && (flag_isoc99 || lvalue_p (expr)))
- || TREE_CODE (TREE_TYPE (expr)) == FUNCTION_TYPE)
- expr = default_conversion (expr);
-
if (warn_sequence_point)
verify_sequence_points (expr);
if (last == error_mark_node
|| (last == BIND_EXPR_BODY (body)
&& BIND_EXPR_VARS (body) == NULL))
- return last;
+ {
+ /* Do not warn if the return value of a statement expression is
+ unused. */
+ if (EXPR_P (last))
+ TREE_NO_WARNING (last) = 1;
+ return last;
+ }
/* Extract the type of said expression. */
type = TREE_TYPE (last);
tree type0, type1;
enum tree_code code0, code1;
tree op0, op1;
+ const char *invalid_op_diag;
/* Expression code to give to the expression when it is built.
Normally this is CODE, which is what the caller asked for,
if (code0 == ERROR_MARK || code1 == ERROR_MARK)
return error_mark_node;
+ if ((invalid_op_diag
+ = targetm.invalid_binary_op (code, type0, type1)))
+ {
+ error (invalid_op_diag);
+ return error_mark_node;
+ }
+
objc_ok = objc_compare_types (type0, type1, -3, NULL_TREE);
switch (code)
&& (code1 == INTEGER_TYPE || code1 == REAL_TYPE
|| code1 == COMPLEX_TYPE || code1 == VECTOR_TYPE))
{
+ enum tree_code tcode0 = code0, tcode1 = code1;
+
if (code0 == COMPLEX_TYPE || code0 == VECTOR_TYPE)
- code0 = TREE_CODE (TREE_TYPE (TREE_TYPE (op0)));
+ tcode0 = TREE_CODE (TREE_TYPE (TREE_TYPE (op0)));
if (code1 == COMPLEX_TYPE || code1 == VECTOR_TYPE)
- code1 = TREE_CODE (TREE_TYPE (TREE_TYPE (op1)));
+ tcode1 = TREE_CODE (TREE_TYPE (TREE_TYPE (op1)));
- if (!(code0 == INTEGER_TYPE && code1 == INTEGER_TYPE))
+ if (!(tcode0 == INTEGER_TYPE && tcode1 == INTEGER_TYPE))
resultcode = RDIV_EXPR;
else
/* Although it would be tempting to shorten always here, that
if (code0 == ERROR_MARK || code1 == ERROR_MARK)
return error_mark_node;
+ if (code0 == VECTOR_TYPE && code1 == VECTOR_TYPE
+ && (!tree_int_cst_equal (TYPE_SIZE (type0), TYPE_SIZE (type1))
+ || !same_scalar_type_ignoring_signedness (TREE_TYPE (type0),
+ TREE_TYPE (type1))))
+ {
+ binary_op_error (code);
+ return error_mark_node;
+ }
+
if ((code0 == INTEGER_TYPE || code0 == REAL_TYPE || code0 == COMPLEX_TYPE
|| code0 == VECTOR_TYPE)
&&
&& (unsigned0 || !uns))
result_type
= c_common_signed_or_unsigned_type
- (unsigned0, c_common_type (TREE_TYPE (arg0), TREE_TYPE (arg1)));
+ (unsigned0, common_type (TREE_TYPE (arg0), TREE_TYPE (arg1)));
else if (TREE_CODE (arg0) == INTEGER_CST
&& (unsigned1 || !uns)
&& (TYPE_PRECISION (TREE_TYPE (arg1))
build_type = result_type;
{
- tree result = build2 (resultcode, build_type, op0, op1);
-
/* Treat expressions in initializers specially as they can't trap. */
- result = require_constant_value ? fold_initializer (result)
- : fold (result);
+ tree result = require_constant_value ? fold_build2_initializer (resultcode,
+ build_type,
+ op0, op1)
+ : fold_build2 (resultcode, build_type,
+ op0, op1);
if (final_type != 0)
result = convert (final_type, result);
/* Convert EXPR to be a truth-value, validating its type for this
- purpose. Passes EXPR to default_function_array_conversion. */
+ purpose. */
tree
c_objc_common_truthvalue_conversion (tree expr)
{
- expr = default_function_array_conversion (expr);
switch (TREE_CODE (TREE_TYPE (expr)))
{
case ARRAY_TYPE:
error ("used union type value where scalar is required");
return error_mark_node;
+ case FUNCTION_TYPE:
+ gcc_unreachable ();
+
default:
break;
}
leaving those to give errors later? */
return c_common_truthvalue_conversion (expr);
}
+\f
+
+/* Convert EXPR to a contained DECL, updating *TC, *TI and *SE as
+ required. */
+
+tree
+c_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED,
+ bool *ti ATTRIBUTE_UNUSED, bool *se)
+{
+ if (TREE_CODE (expr) == COMPOUND_LITERAL_EXPR)
+ {
+ tree decl = COMPOUND_LITERAL_EXPR_DECL (expr);
+ /* Executing a compound literal inside a function reinitializes
+ it. */
+ if (!TREE_STATIC (decl))
+ *se = true;
+ return decl;
+ }
+ else
+ return expr;
+}
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