X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fc-tree.h;h=10c96d4d1b7052fdbc963707b7121d141757b84f;hb=4194491afb02c40ba1ba849bf7abd492e4bebc13;hp=eef57425d9d58b715afc82c90fc2876537546687;hpb=8d58a5a7900f5543f186d868d265d75be0f09cdc;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/c-tree.h b/gcc/c-tree.h index eef57425d9d..10c96d4d1b7 100644 --- a/gcc/c-tree.h +++ b/gcc/c-tree.h @@ -1,6 +1,6 @@ /* Definitions for C parsing and type checking. Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, - 1999, 2000, 2001, 2002 Free Software Foundation, Inc. + 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of GCC. @@ -23,68 +23,30 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #define GCC_C_TREE_H #include "c-common.h" +#include "diagnostic.h" -/* Language-dependent contents of an identifier. */ +/* struct lang_identifier is private to c-decl.c, but langhooks.c needs to + know how big it is. This is sanity-checked in c-decl.c. */ +#define C_SIZEOF_STRUCT_LANG_IDENTIFIER \ + (sizeof (struct c_common_identifier) + 3 * sizeof (void *)) -/* The limbo_value is used for block level extern declarations, which need - to be type checked against subsequent extern declarations. They can't - be referenced after they fall out of scope, so they can't be global. - - The rid_code field is used for keywords. It is in all - lang_identifier nodes, because some keywords are only special in a - particular context. */ - -struct lang_identifier -{ - struct c_common_identifier ignore; - tree global_value, local_value, label_value, implicit_decl; - tree error_locus, limbo_value; -}; +/* For gc purposes, return the most likely link for the longest chain. */ +#define C_LANG_TREE_NODE_CHAIN_NEXT(T) \ + ((union lang_tree_node *) \ + (TREE_CODE (T) == INTEGER_TYPE ? TYPE_NEXT_VARIANT (T) \ + : TREE_CODE (T) == COMPOUND_EXPR ? TREE_OPERAND (T, 1) \ + : TREE_CHAIN (T))) /* Language-specific declaration information. */ -struct lang_decl +struct lang_decl GTY(()) { - struct c_lang_decl base; /* The return types and parameter types may have variable size. This is a list of any SAVE_EXPRs that need to be evaluated to compute those sizes. */ tree pending_sizes; }; -/* Macros for access to language-specific slots in an identifier. */ -/* Each of these slots contains a DECL node or null. */ - -/* This represents the value which the identifier has in the - file-scope namespace. */ -#define IDENTIFIER_GLOBAL_VALUE(NODE) \ - (((struct lang_identifier *) (NODE))->global_value) -/* This represents the value which the identifier has in the current - scope. */ -#define IDENTIFIER_LOCAL_VALUE(NODE) \ - (((struct lang_identifier *) (NODE))->local_value) -/* This represents the value which the identifier has as a label in - the current label scope. */ -#define IDENTIFIER_LABEL_VALUE(NODE) \ - (((struct lang_identifier *) (NODE))->label_value) -/* This records the extern decl of this identifier, if it has had one - at any point in this compilation. */ -#define IDENTIFIER_LIMBO_VALUE(NODE) \ - (((struct lang_identifier *) (NODE))->limbo_value) -/* This records the implicit function decl of this identifier, if it - has had one at any point in this compilation. */ -#define IDENTIFIER_IMPLICIT_DECL(NODE) \ - (((struct lang_identifier *) (NODE))->implicit_decl) -/* This is the last function in which we printed an "undefined variable" - message for this identifier. Value is a FUNCTION_DECL or null. */ -#define IDENTIFIER_ERROR_LOCUS(NODE) \ - (((struct lang_identifier *) (NODE))->error_locus) - -/* In identifiers, C uses the following fields in a special way: - TREE_PUBLIC to record that there was a previous local extern decl. - TREE_USED to record that such a decl was used. - TREE_ADDRESSABLE to record that the address of such a decl was used. */ - /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */ #define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1 (TYPE) @@ -95,22 +57,22 @@ struct lang_decl nonzero if the definition of the type has already started. */ #define C_TYPE_BEING_DEFINED(TYPE) TYPE_LANG_FLAG_0 (TYPE) +/* In an incomplete RECORD_TYPE or UNION_TYPE, a list of variable + declarations whose type would be completed by completing that type. */ +#define C_TYPE_INCOMPLETE_VARS(TYPE) TYPE_VFIELD (TYPE) + /* In an IDENTIFIER_NODE, nonzero if this identifier is actually a keyword. C_RID_CODE (node) is then the RID_* value of the keyword, and C_RID_YYCODE is the token number wanted by Yacc. */ #define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID) -/* This function was declared inline. This flag controls the linkage - semantics of 'inline'; whether or not the function is inlined is - controlled by DECL_INLINE. */ -#define DECL_DECLARED_INLINE_P(NODE) \ - (DECL_LANG_SPECIFIC (NODE)->base.declared_inline) - -/* In a RECORD_TYPE, a sorted array of the fields of the type. */ -struct lang_type +struct lang_type GTY(()) { - int len; - tree elts[1]; + /* 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. */ + tree enum_min; + tree enum_max; }; /* Record whether a type or decl was written with nonconstant size. @@ -118,13 +80,6 @@ struct lang_type #define C_TYPE_VARIABLE_SIZE(TYPE) TYPE_LANG_FLAG_1 (TYPE) #define C_DECL_VARIABLE_SIZE(TYPE) DECL_LANG_FLAG_0 (TYPE) -#if 0 /* Not used. */ -/* Record whether a decl for a function or function pointer has - already been mentioned (in a warning) because it was called - but didn't have a prototype. */ -#define C_MISSING_PROTOTYPE_WARNED(DECL) DECL_LANG_FLAG_2 (DECL) -#endif - /* Store a value in that field. */ #define C_SET_EXP_ORIGINAL_CODE(EXP, CODE) \ (TREE_COMPLEXITY (EXP) = (int) (CODE)) @@ -136,153 +91,180 @@ struct lang_type return type. */ #define C_FUNCTION_IMPLICIT_INT(EXP) DECL_LANG_FLAG_1 (EXP) -/* Nonzero for a declaration of a built in function if there has been no - occasion that would declare the function in ordinary C. - Using the function draws a pedantic warning in this case. */ -#define C_DECL_ANTICIPATED(EXP) DECL_LANG_FLAG_3 (EXP) +/* For a FUNCTION_DECL, nonzero if it was an implicit declaration. */ +#define C_DECL_IMPLICIT(EXP) DECL_LANG_FLAG_2 (EXP) + +/* For FUNCTION_DECLs, evaluates true if the decl is built-in but has + been declared. */ +#define C_DECL_DECLARED_BUILTIN(EXP) DECL_LANG_FLAG_3 (EXP) + +/* Record whether a decl was declared register. This is strictly a + front-end flag, whereas DECL_REGISTER is used for code generation; + they may differ for structures with volatile fields. */ +#define C_DECL_REGISTER(EXP) DECL_LANG_FLAG_4 (EXP) + +/* Nonzero for a decl which either doesn't exist or isn't a prototype. + N.B. Could be simplified if all built-in decls had complete prototypes + (but this is presently difficult because some of them need FILE*). */ +#define C_DECL_ISNT_PROTOTYPE(EXP) \ + (EXP == 0 \ + || (TYPE_ARG_TYPES (TREE_TYPE (EXP)) == 0 \ + && !DECL_BUILT_IN (EXP))) /* For FUNCTION_TYPE, a hidden list of types of arguments. The same as TYPE_ARG_TYPES for functions with prototypes, but created for functions without prototypes. */ #define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_BINFO (NODE) - -/* in c-lang.c and objc-act.c */ -extern tree lookup_interface PARAMS ((tree)); -extern tree is_class_name PARAMS ((tree)); -extern void maybe_objc_check_decl PARAMS ((tree)); -extern void finish_file PARAMS ((void)); -extern int maybe_objc_comptypes PARAMS ((tree, tree, int)); -extern tree maybe_building_objc_message_expr PARAMS ((void)); -extern int recognize_objc_keyword PARAMS ((void)); -extern tree lookup_objc_ivar PARAMS ((tree)); +/* Save and restore the variables in this file and elsewhere + that keep track of the progress of compilation of the current function. + Used for nested functions. */ + +struct language_function GTY(()) +{ + struct c_language_function base; + tree x_break_label; + tree x_cont_label; + struct c_switch * GTY((skip)) x_switch_stack; + int returns_value; + int returns_null; + int returns_abnormally; + int warn_about_return_type; + int extern_inline; +}; /* in c-parse.in */ -extern void c_parse_init PARAMS ((void)); -extern void c_set_yydebug PARAMS ((int)); +extern void c_parse_init (void); /* in c-aux-info.c */ -extern void gen_aux_info_record PARAMS ((tree, int, int, int)); +extern void gen_aux_info_record (tree, int, int, int); /* in c-decl.c */ -extern int global_bindings_p PARAMS ((void)); -extern int kept_level_p PARAMS ((void)); -extern tree getdecls PARAMS ((void)); -extern void pushlevel PARAMS ((int)); -extern tree poplevel PARAMS ((int,int, int)); -extern void insert_block PARAMS ((tree)); -extern void set_block PARAMS ((tree)); -extern tree pushdecl PARAMS ((tree)); - -extern void c_insert_default_attributes PARAMS ((tree)); -extern void c_init_decl_processing PARAMS ((void)); -extern void c_dup_lang_specific_decl PARAMS ((tree)); -extern void c_print_identifier PARAMS ((FILE *, tree, int)); -extern void c_mark_tree PARAMS ((tree)); -extern tree build_array_declarator PARAMS ((tree, tree, int, int)); -extern tree build_enumerator PARAMS ((tree, tree)); -extern int c_decode_option PARAMS ((int, char **)); -extern void c_mark_varargs PARAMS ((void)); -extern void check_for_loop_decls PARAMS ((void)); -extern void clear_parm_order PARAMS ((void)); -extern int complete_array_type PARAMS ((tree, tree, int)); -extern void declare_parm_level PARAMS ((int)); -extern tree define_label PARAMS ((const char *, int, - tree)); -extern void finish_decl PARAMS ((tree, tree, tree)); -extern tree finish_enum PARAMS ((tree, tree, tree)); -extern void finish_function PARAMS ((int, int)); -extern tree finish_struct PARAMS ((tree, tree, tree)); -extern tree get_parm_info PARAMS ((int)); -extern tree grokfield PARAMS ((const char *, int, tree, tree, tree)); -extern tree groktypename PARAMS ((tree)); -extern tree groktypename_in_parm_context PARAMS ((tree)); -extern tree implicitly_declare PARAMS ((tree)); -extern void implicit_decl_warning PARAMS ((tree)); -extern int in_parm_level_p PARAMS ((void)); -extern void keep_next_level PARAMS ((void)); -extern tree lookup_name PARAMS ((tree)); -extern tree lookup_name_current_level PARAMS ((tree)); -extern void parmlist_tags_warning PARAMS ((void)); -extern void pending_xref_error PARAMS ((void)); -extern void mark_c_function_context PARAMS ((struct function *)); -extern void push_c_function_context PARAMS ((struct function *)); -extern void pop_c_function_context PARAMS ((struct function *)); -extern void pop_label_level PARAMS ((void)); -extern void push_label_level PARAMS ((void)); -extern void push_parm_decl PARAMS ((tree)); -extern tree pushdecl_top_level PARAMS ((tree)); -extern void pushtag PARAMS ((tree, tree)); -extern tree set_array_declarator_type PARAMS ((tree, tree, int)); -extern tree shadow_label PARAMS ((tree)); -extern void shadow_tag PARAMS ((tree)); -extern void shadow_tag_warned PARAMS ((tree, int)); -extern tree start_enum PARAMS ((tree)); -extern int start_function PARAMS ((tree, tree, tree)); -extern tree start_decl PARAMS ((tree, tree, int, - tree)); -extern tree start_struct PARAMS ((enum tree_code, tree)); -extern void store_parm_decls PARAMS ((void)); -extern tree xref_tag PARAMS ((enum tree_code, tree)); -extern tree c_begin_compound_stmt PARAMS ((void)); -extern void c_expand_deferred_function PARAMS ((tree)); -extern void c_expand_decl_stmt PARAMS ((tree)); - +extern tree c_break_label; +extern tree c_cont_label; + +extern int global_bindings_p (void); +extern void push_scope (void); +extern tree pop_scope (void); +extern void insert_block (tree); +extern tree pushdecl (tree); +extern void c_expand_body (tree); + +extern void c_init_decl_processing (void); +extern void c_dup_lang_specific_decl (tree); +extern void c_print_identifier (FILE *, tree, int); +extern tree build_array_declarator (tree, tree, int, int); +extern tree build_enumerator (tree, tree); +extern void check_for_loop_decls (void); +extern void mark_forward_parm_decls (void); +extern int complete_array_type (tree, tree, int); +extern void declare_parm_level (void); +extern void undeclared_variable (tree); +extern tree declare_label (tree); +extern tree define_label (location_t, tree); +extern void finish_decl (tree, tree, tree); +extern tree finish_enum (tree, tree, tree); +extern void finish_function (void); +extern tree finish_struct (tree, tree, tree); +extern tree get_parm_info (bool); +extern tree grokfield (tree, tree, tree); +extern tree groktypename (tree); +extern tree groktypename_in_parm_context (tree); +extern tree implicitly_declare (tree); +extern void keep_next_level (void); +extern tree lookup_name (tree); +extern void pending_xref_error (void); +extern void c_push_function_context (struct function *); +extern void c_pop_function_context (struct function *); +extern void push_parm_decl (tree); +extern tree pushdecl_top_level (tree); +extern tree set_array_declarator_type (tree, tree, int); +extern void shadow_tag (tree); +extern void shadow_tag_warned (tree, int); +extern tree start_enum (tree); +extern int start_function (tree, tree, tree); +extern tree start_decl (tree, tree, int, tree); +extern tree start_struct (enum tree_code, tree); +extern void store_parm_decls (void); +extern tree xref_tag (enum tree_code, tree); +extern int c_expand_decl (tree); +extern void c_static_assembler_name (tree); +extern tree make_pointer_declarator (tree, tree); /* in c-objc-common.c */ -extern int c_disregard_inline_limits PARAMS ((tree)); -extern int c_cannot_inline_tree_fn PARAMS ((tree *)); -extern const char *c_objc_common_init PARAMS ((const char *)); -extern int c_missing_noreturn_ok_p PARAMS ((tree)); -extern void c_objc_common_finish_file PARAMS ((void)); -extern int defer_fn PARAMS ((tree)); -extern bool c_warn_unused_global_decl PARAMS ((tree)); +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 void c_objc_common_finish_file (void); +extern int defer_fn (tree); +extern bool c_warn_unused_global_decl (tree); +extern void c_initialize_diagnostics (diagnostic_context *); #define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \ c_build_qualified_type ((TYPE), \ ((CONST_P) ? TYPE_QUAL_CONST : 0) | \ ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0)) +#define c_sizeof_nowarn(T) c_sizeof_or_alignof_type (T, SIZEOF_EXPR, 0) + /* in c-typeck.c */ -extern tree require_complete_type PARAMS ((tree)); -extern int comptypes PARAMS ((tree, tree)); -extern tree c_sizeof_nowarn PARAMS ((tree)); -extern tree c_size_in_bytes PARAMS ((tree)); -extern bool c_mark_addressable PARAMS ((tree)); -extern tree build_component_ref PARAMS ((tree, tree)); -extern tree build_indirect_ref PARAMS ((tree, const char *)); -extern tree build_array_ref PARAMS ((tree, tree)); -extern tree build_external_ref PARAMS ((tree, int)); -extern tree parser_build_binary_op PARAMS ((enum tree_code, - tree, tree)); -extern void readonly_warning PARAMS ((tree, const char *)); -extern tree build_conditional_expr PARAMS ((tree, tree, tree)); -extern tree build_compound_expr PARAMS ((tree)); -extern tree c_cast_expr PARAMS ((tree, tree)); -extern tree build_c_cast PARAMS ((tree, tree)); -extern tree build_modify_expr PARAMS ((tree, enum tree_code, - tree)); -extern void store_init_value PARAMS ((tree, tree)); -extern void error_init PARAMS ((const char *)); -extern void pedwarn_init PARAMS ((const char *)); -extern void start_init PARAMS ((tree, tree, int)); -extern void finish_init PARAMS ((void)); -extern void really_start_incremental_init PARAMS ((tree)); -extern void push_init_level PARAMS ((int)); -extern tree pop_init_level PARAMS ((int)); -extern void set_init_index PARAMS ((tree, tree)); -extern void set_init_label PARAMS ((tree)); -extern void process_init_element PARAMS ((tree)); -extern tree build_compound_literal PARAMS ((tree, tree)); -extern void pedwarn_c99 PARAMS ((const char *, ...)) - ATTRIBUTE_PRINTF_1; -extern tree c_start_case PARAMS ((tree)); -extern void c_finish_case PARAMS ((void)); -extern tree simple_asm_stmt PARAMS ((tree)); -extern tree build_asm_stmt PARAMS ((tree, tree, tree, - tree, tree)); -extern tree c_convert_parm_for_inlining PARAMS ((tree, tree, tree)); +extern struct c_switch *c_switch_stack; + +extern tree require_complete_type (tree); +extern int same_translation_unit_p (tree, tree); +extern int comptypes (tree, tree); +extern tree c_size_in_bytes (tree); +extern bool c_mark_addressable (tree); +extern void c_incomplete_type_error (tree, tree); +extern tree c_type_promotes_to (tree); +extern tree composite_type (tree, tree); +extern tree build_component_ref (tree, tree); +extern tree build_indirect_ref (tree, const char *); +extern tree build_array_ref (tree, tree); +extern tree build_external_ref (tree, int); +extern tree parser_build_binary_op (enum tree_code, tree, tree); +extern void readonly_error (tree, const char *); +extern tree build_conditional_expr (tree, tree, tree); +extern tree build_compound_expr (tree); +extern tree c_cast_expr (tree, tree); +extern tree build_c_cast (tree, tree); +extern tree build_modify_expr (tree, enum tree_code, tree); +extern void store_init_value (tree, tree); +extern void error_init (const char *); +extern void pedwarn_init (const char *); +extern void start_init (tree, tree, int); +extern void finish_init (void); +extern void really_start_incremental_init (tree); +extern void push_init_level (int); +extern tree pop_init_level (int); +extern void set_init_index (tree, tree); +extern void set_init_label (tree); +extern void process_init_element (tree); +extern tree build_compound_literal (tree, tree); +extern void pedwarn_c90 (const char *, ...) ATTRIBUTE_PRINTF_1; +extern void pedwarn_c99 (const char *, ...) ATTRIBUTE_PRINTF_1; +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 void c_finish_if_stmt (location_t, tree, tree, tree, bool); +extern void c_finish_loop (location_t, tree, tree, tree, tree, tree, bool); +extern tree c_begin_stmt_expr (void); +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_bc_stmt (tree *, bool); +extern tree c_finish_goto_label (tree); +extern tree c_finish_goto_ptr (tree); +extern tree build_offsetof (tree, tree); /* Set to 0 at beginning of a function definition, set to 1 if a return statement that specifies a return value is seen. */ @@ -299,95 +281,30 @@ extern int current_function_returns_null; extern int current_function_returns_abnormally; -/* Nonzero means the expression being parsed will never be evaluated. - This is a count, since unevaluated expressions can nest. */ - -extern int skip_evaluation; - -/* Nonzero means `$' can be in an identifier. */ - -extern int dollars_in_ident; - -/* Nonzero means allow type mismatches in conditional expressions; - just make their values `void'. */ - -extern int flag_cond_mismatch; - -/* Nonzero means don't recognize the keyword `asm'. */ - -extern int flag_no_asm; - -/* Nonzero means warn about implicit declarations. */ - -extern int warn_implicit; - -/* Nonzero means warn for all old-style non-prototype function decls. */ - -extern int warn_strict_prototypes; - -/* Nonzero means warn about multiple (redundant) decls for the same single - variable or function. */ - -extern int warn_redundant_decls; - -/* Nonzero means warn about extern declarations of objects not at - file-scope level and about *all* declarations of functions (whether - extern or static) not at file-scope level. Note that we exclude - implicit function declarations. To get warnings about those, use - -Wimplicit. */ - -extern int warn_nested_externs; - -/* Nonzero means warn about pointer casts that can drop a type qualifier - from the pointer target type. */ - -extern int warn_cast_qual; - -/* Nonzero means warn when casting a function call to a type that does - not match the return type (e.g. (float)sqrt() or (anything*)malloc() - when there is no previous declaration of sqrt or malloc. */ - -extern int warn_bad_function_cast; - -/* Warn about traditional constructs whose meanings changed in ANSI C. */ - -extern int warn_traditional; - -/* Warn about a subscript that has type char. */ - -extern int warn_char_subscripts; - -/* Warn if main is suspicious. */ - -extern int warn_main; - -/* Warn if initializer is not completely bracketed. */ - -extern int warn_missing_braces; - -/* Warn about comparison of signed and unsigned values. */ - -extern int warn_sign_compare; - -/* Warn about testing equality of floating point numbers. */ - -extern int warn_float_equal; - -/* Warn about multicharacter constants. */ - -extern int warn_multichar; - /* Nonzero means we are reading code that came from a system header file. */ extern int system_header_p; -/* Warn about implicit declarations. 1 = warning, 2 = error. */ -extern int mesg_implicit_function_declaration; +/* True means global_bindings_p should return false even if the scope stack + says we are in file scope. */ -/* In c-decl.c */ -extern void c_finish_incomplete_decl PARAMS ((tree)); +extern bool c_override_global_bindings_to_false; + +/* True means we've initialized exception handling. */ +extern bool c_eh_initialized_p; -extern tree static_ctors; -extern tree static_dtors; +/* In c-decl.c */ +extern void c_finish_incomplete_decl (tree); +extern void *get_current_scope (void); +extern void objc_mark_locals_volatile (void *); +extern void c_write_global_declarations (void); + +extern GTY(()) tree static_ctors; +extern GTY(()) tree static_dtors; + +/* In order for the format checking to accept the C frontend + diagnostic framework extensions, you must include this file before + toplev.h, not after. */ +#define GCC_DIAG_STYLE __gcc_cdiag__ #endif /* ! GCC_C_TREE_H */