/* Definitions for C parsing and type checking.
Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
+ Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
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, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef GCC_C_TREE_H
#define GCC_C_TREE_H
/* Language-specific declaration information. */
-struct lang_decl GTY(())
-{
+struct GTY(()) lang_decl {
char dummy;
};
and C_RID_YYCODE is the token number wanted by Yacc. */
#define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID)
-struct lang_type GTY(())
-{
+struct GTY(()) lang_type {
/* In a RECORD_TYPE, a sorted array of the fields of the type. */
struct sorted_fields_type * GTY ((reorder ("resort_sorted_fields"))) s;
/* In an ENUMERAL_TYPE, the min and max values. */
without prototypes. */
#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_LANG_SLOT_1 (NODE)
+/* For a CONSTRUCTOR, whether some initializer contains a
+ subexpression meaning it is not a constant expression. */
+#define CONSTRUCTOR_NON_CONST(EXPR) TREE_LANG_FLAG_1 (CONSTRUCTOR_CHECK (EXPR))
+
/* Record parser information about an expression that is irrelevant
for code generation alongside a tree representing its value. */
struct c_expr
{
/* The value of the expression. */
tree value;
- /* Record the original binary operator of an expression, which may
+ /* Record the original unary/binary operator of an expression, which may
have been changed by fold, STRING_CST for unparenthesized string
- constants, or ERROR_MARK for other expressions (including
+ constants, C_MAYBE_CONST_EXPR for __builtin_constant_p calls
+ (even if parenthesized), for subexpressions, and for non-constant
+ initializers, or ERROR_MARK for other expressions (including
parenthesized expressions). */
enum tree_code original_code;
+ /* If not NULL, the original type of an expression. This will
+ differ from the type of the value field for an enum constant.
+ The type of an enum constant is a plain integer type, but this
+ field will be the enum type. */
+ tree original_type;
};
/* A kind of type specifier. Note that this information is currently
enum c_typespec_kind kind;
/* The specifier itself. */
tree spec;
+ /* An expression to be evaluated before the type specifier, in the
+ case of typeof specifiers, or NULL otherwise or if no such
+ expression is required for a particular typeof specifier. In
+ particular, when typeof is applied to an expression of variably
+ modified type, that expression must be evaluated in order to
+ determine array sizes that form part of the type, but the
+ expression itself (as opposed to the array sizes) forms no part
+ of the type and so needs to be recorded separately. */
+ tree expr;
+ /* Whether the expression has operands suitable for use in constant
+ expressions. */
+ bool expr_const_operands;
};
/* A storage class specifier. */
};
/* A type specifier keyword "void", "_Bool", "char", "int", "float",
- "double", or none of these. */
+ "double", "_Decimal32", "_Decimal64", "_Decimal128", "_Fract", "_Accum",
+ or none of these. */
enum c_typespec_keyword {
cts_none,
cts_void,
cts_double,
cts_dfloat32,
cts_dfloat64,
- cts_dfloat128
+ cts_dfloat128,
+ cts_fract,
+ cts_accum
};
/* A sequence of declaration specifiers in C. */
whole type, or NULL_TREE if none or a keyword such as "void" or
"char" is used. Does not include qualifiers. */
tree type;
+ /* Any expression to be evaluated before the type, from a typeof
+ specifier. */
+ tree expr;
/* The attributes from a typedef decl. */
tree decl_attr;
/* When parsing, the attributes. Outside the parser, this will be
enum c_typespec_keyword typespec_word;
/* The storage class specifier, or csc_none if none. */
enum c_storage_class storage_class;
+ /* Whether any expressions in typeof specifiers may appear in
+ constant expressions. */
+ BOOL_BITFIELD expr_const_operands : 1;
/* Whether any declaration specifiers have been seen at all. */
BOOL_BITFIELD declspecs_seen_p : 1;
/* Whether a type specifier has been seen. */
BOOL_BITFIELD volatile_p : 1;
/* Whether "restrict" was specified. */
BOOL_BITFIELD restrict_p : 1;
+ /* Whether "_Sat" was specified. */
+ BOOL_BITFIELD saturating_p : 1;
};
/* The various kinds of declarators in C. */
/* A list of non-parameter decls (notably enumeration constants)
defined with the parameters. */
tree others;
+ /* A list of VLA sizes from the parameters. In a function
+ definition, these are used to ensure that side-effects in sizes
+ of arrays converted to pointers (such as a parameter int i[n++])
+ take place; otherwise, they are ignored. */
+ tree pending_sizes;
+ /* True when these arguments had [*]. */
+ BOOL_BITFIELD had_vla_unspec : 1;
};
/* A declarator. */
that keep track of the progress of compilation of the current function.
Used for nested functions. */
-struct language_function GTY(())
-{
+struct GTY(()) language_function {
struct c_language_function base;
tree x_break_label;
tree x_cont_label;
int returns_null;
int returns_abnormally;
int warn_about_return_type;
- int extern_inline;
};
/* Save lists of labels used or defined in particular contexts.
struct c_label_context_vm *next;
};
+/* Used when parsing an enum. Initialized by start_enum. */
+struct c_enum_contents
+{
+ /* While defining an enum type, this is 1 plus the last enumerator
+ constant value. */
+ tree enum_next_value;
+
+ /* Nonzero means that there was overflow computing enum_next_value. */
+ int enum_overflow;
+};
+
\f
/* in c-parser.c */
extern void c_parse_init (void);
extern int global_bindings_p (void);
extern void push_scope (void);
extern tree pop_scope (void);
-extern void insert_block (tree);
-extern void c_expand_body (tree);
extern void c_init_decl_processing (void);
extern void c_dup_lang_specific_decl (tree);
extern int quals_from_declspecs (const struct c_declspecs *);
extern struct c_declarator *build_array_declarator (tree, struct c_declspecs *,
bool, bool);
-extern tree build_enumerator (tree, tree);
+extern tree build_enumerator (struct c_enum_contents *, tree, tree, location_t);
extern tree check_for_loop_decls (void);
extern void mark_forward_parm_decls (void);
extern void declare_parm_level (void);
extern void undeclared_variable (tree, location_t);
extern tree declare_label (tree);
extern tree define_label (location_t, tree);
-extern void finish_decl (tree, tree, tree);
+extern void c_maybe_initialize_eh (void);
+extern void finish_decl (tree, tree, tree, tree);
extern tree finish_enum (tree, tree, tree);
extern void finish_function (void);
extern tree finish_struct (tree, tree, tree);
extern struct c_arg_info *get_parm_info (bool);
-extern tree grokfield (struct c_declarator *, struct c_declspecs *, tree);
-extern tree groktypename (struct c_type_name *);
+extern tree grokfield (location_t, struct c_declarator *,
+ struct c_declspecs *, tree, tree *);
+extern tree groktypename (struct c_type_name *, tree *, bool *);
extern tree grokparm (const struct c_parm *);
extern tree implicitly_declare (tree);
extern void keep_next_level (void);
extern void pending_xref_error (void);
-extern void c_push_function_context (struct function *);
-extern void c_pop_function_context (struct function *);
+extern void c_push_function_context (void);
+extern void c_pop_function_context (void);
extern void push_parm_decl (const struct c_parm *);
extern struct c_declarator *set_array_declarator_inner (struct c_declarator *,
- struct c_declarator *,
- bool);
-extern tree builtin_function (const char *, tree, int, enum built_in_class,
- const char *, tree);
+ struct c_declarator *);
+extern tree c_builtin_function (tree);
+extern tree c_builtin_function_ext_scope (tree);
extern void shadow_tag (const struct c_declspecs *);
extern void shadow_tag_warned (const struct c_declspecs *, int);
-extern tree start_enum (tree);
+extern tree start_enum (struct c_enum_contents *, tree);
extern int start_function (struct c_declspecs *, struct c_declarator *, tree);
extern tree start_decl (struct c_declarator *, struct c_declspecs *, bool,
tree);
extern struct c_declspecs *finish_declspecs (struct c_declspecs *);
/* in c-objc-common.c */
-extern int c_disregard_inline_limits (tree);
-extern int c_cannot_inline_tree_fn (tree *);
extern bool c_objc_common_init (void);
extern bool c_missing_noreturn_ok_p (tree);
-extern tree c_objc_common_truthvalue_conversion (tree expr);
-extern bool c_warn_unused_global_decl (tree);
+extern bool c_warn_unused_global_decl (const_tree);
extern void c_initialize_diagnostics (diagnostic_context *);
+extern bool c_vla_unspec_p (tree x, tree fn);
#define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
c_build_qualified_type ((TYPE), \
((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
/* in c-typeck.c */
+extern bool in_late_binary_op;
extern int in_alignof;
extern int in_sizeof;
extern int in_typeof;
extern struct c_label_context_se *label_context_stack_se;
extern struct c_label_context_vm *label_context_stack_vm;
+extern tree c_objc_common_truthvalue_conversion (location_t, tree);
extern tree require_complete_type (tree);
-extern int same_translation_unit_p (tree, tree);
+extern int same_translation_unit_p (const_tree, const_tree);
extern int comptypes (tree, tree);
+extern bool c_vla_type_p (const_tree);
extern bool c_mark_addressable (tree);
-extern void c_incomplete_type_error (tree, tree);
+extern void c_incomplete_type_error (const_tree, const_tree);
extern tree c_type_promotes_to (tree);
-extern tree default_conversion (tree);
extern struct c_expr default_function_array_conversion (struct c_expr);
extern tree composite_type (tree, tree);
extern tree build_component_ref (tree, tree);
-extern tree build_array_ref (tree, tree);
-extern tree build_external_ref (tree, int, location_t);
+extern tree build_array_ref (tree, tree, location_t);
+extern tree build_external_ref (tree, int, location_t, tree *);
extern void pop_maybe_used (bool);
extern struct c_expr c_expr_sizeof_expr (struct c_expr);
extern struct c_expr c_expr_sizeof_type (struct c_type_name *);
-extern struct c_expr parser_build_unary_op (enum tree_code, struct c_expr);
-extern struct c_expr parser_build_binary_op (enum tree_code, struct c_expr,
+extern struct c_expr parser_build_unary_op (enum tree_code, struct c_expr,
+ location_t);
+extern struct c_expr parser_build_binary_op (location_t,
+ enum tree_code, struct c_expr,
struct c_expr);
-extern tree build_conditional_expr (tree, tree, tree);
+extern tree build_conditional_expr (tree, bool, tree, tree);
extern tree build_compound_expr (tree, tree);
extern tree c_cast_expr (struct c_type_name *, tree);
extern tree build_c_cast (tree, tree);
-extern void store_init_value (tree, tree);
+extern void store_init_value (tree, tree, tree);
extern void error_init (const char *);
-extern void pedwarn_init (const char *);
+extern void pedwarn_init (location_t, int opt, const char *);
extern void maybe_warn_string_init (tree, struct c_expr);
extern void start_init (tree, tree, int);
extern void finish_init (void);
extern struct c_expr pop_init_level (int);
extern void set_init_index (tree, tree);
extern void set_init_label (tree);
-extern void process_init_element (struct c_expr);
-extern tree build_compound_literal (tree, tree);
+extern void process_init_element (struct c_expr, bool);
+extern tree build_compound_literal (tree, tree, bool);
extern tree c_start_case (tree);
extern void c_finish_case (tree);
extern tree build_asm_expr (tree, tree, tree, tree, bool);
extern tree build_asm_stmt (tree, tree);
-extern tree c_convert_parm_for_inlining (tree, tree, tree, int);
extern int c_types_compatible_p (tree, tree);
extern tree c_begin_compound_stmt (bool);
extern tree c_end_compound_stmt (tree, bool);
extern tree c_finish_stmt_expr (tree);
extern tree c_process_expr_stmt (tree);
extern tree c_finish_expr_stmt (tree);
-extern tree c_finish_return (tree);
+extern tree c_finish_return (tree, tree);
extern tree c_finish_bc_stmt (tree *, bool);
extern tree c_finish_goto_label (tree);
extern tree c_finish_goto_ptr (tree);
extern void c_begin_vm_scope (unsigned int);
extern void c_end_vm_scope (unsigned int);
-extern tree c_expr_to_decl (tree, bool *, bool *, bool *);
+extern tree c_expr_to_decl (tree, bool *, bool *);
extern tree c_begin_omp_parallel (void);
extern tree c_finish_omp_parallel (tree, tree);
+extern tree c_begin_omp_task (void);
+extern tree c_finish_omp_task (tree, tree);
extern tree c_finish_omp_clauses (tree);
/* Set to 0 at beginning of a function definition, set to 1 if
#define ATTRIBUTE_GCC_CDIAG(m, n) ATTRIBUTE_NONNULL(m)
#endif
-extern void pedwarn_c90 (const char *, ...) ATTRIBUTE_GCC_CDIAG(1,2);
-extern void pedwarn_c99 (const char *, ...) ATTRIBUTE_GCC_CDIAG(1,2);
+extern void pedwarn_c90 (location_t, int opt, const char *, ...) ATTRIBUTE_GCC_CDIAG(3,4);
+extern void pedwarn_c99 (location_t, int opt, const char *, ...) ATTRIBUTE_GCC_CDIAG(3,4);
+
+extern bool c_cpp_error (cpp_reader *, int, location_t, unsigned int,
+ const char *, va_list *)
+ ATTRIBUTE_GCC_CDIAG(5,0);
#endif /* ! GCC_C_TREE_H */
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