912 lines
34 KiB
C++
912 lines
34 KiB
C++
/* Definitions for C parsing and type checking.
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Copyright (C) 1987-2023 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_C_TREE_H
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#define GCC_C_TREE_H
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#include "c-family/c-common.h"
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#include "diagnostic.h"
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/* struct lang_identifier is private to c-decl.cc, but langhooks.cc needs to
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know how big it is. This is sanity-checked in c-decl.cc. */
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#define C_SIZEOF_STRUCT_LANG_IDENTIFIER \
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(sizeof (struct c_common_identifier) + 3 * sizeof (void *))
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/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
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#define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1 (TYPE)
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/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile. */
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#define C_TYPE_FIELDS_VOLATILE(TYPE) TREE_LANG_FLAG_2 (TYPE)
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/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is
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volatile, restrict-qualified or atomic; that is, has a type not
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permitted for a constexpr object. */
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#define C_TYPE_FIELDS_NON_CONSTEXPR(TYPE) TREE_LANG_FLAG_4 (TYPE)
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/* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE
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nonzero if the definition of the type has already started. */
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#define C_TYPE_BEING_DEFINED(TYPE) TYPE_LANG_FLAG_0 (TYPE)
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/* In an incomplete RECORD_TYPE, UNION_TYPE or ENUMERAL_TYPE, a list of
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variable declarations whose type would be completed by completing
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that type. */
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#define C_TYPE_INCOMPLETE_VARS(TYPE) \
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TYPE_LANG_SLOT_1 (TREE_CHECK4 (TYPE, RECORD_TYPE, UNION_TYPE, \
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QUAL_UNION_TYPE, ENUMERAL_TYPE))
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/* In an IDENTIFIER_NODE, nonzero if this identifier is actually a
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keyword. C_RID_CODE (node) is then the RID_* value of the keyword. */
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#define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID)
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/* Record whether a type or decl was written with nonconstant size.
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Note that TYPE_SIZE may have simplified to a constant. */
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#define C_TYPE_VARIABLE_SIZE(TYPE) TYPE_LANG_FLAG_1 (TYPE)
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#define C_DECL_VARIABLE_SIZE(TYPE) DECL_LANG_FLAG_0 (TYPE)
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/* Record whether a type is variably modified. */
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#define C_TYPE_VARIABLY_MODIFIED(TYPE) TYPE_LANG_FLAG_6 (TYPE)
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/* Record whether a type is defined inside a struct or union type.
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This is used for -Wc++-compat. */
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#define C_TYPE_DEFINED_IN_STRUCT(TYPE) TYPE_LANG_FLAG_2 (TYPE)
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/* Record whether a typedef for type `int' was actually `signed int'. */
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#define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
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/* For a FUNCTION_DECL, nonzero if it was defined without an explicit
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return type. */
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#define C_FUNCTION_IMPLICIT_INT(EXP) DECL_LANG_FLAG_1 (EXP)
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/* For a FUNCTION_DECL, nonzero if it was an implicit declaration. */
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#define C_DECL_IMPLICIT(EXP) DECL_LANG_FLAG_2 (EXP)
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/* For a PARM_DECL, nonzero if it was declared as an array. */
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#define C_ARRAY_PARAMETER(NODE) DECL_LANG_FLAG_0 (NODE)
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/* For FUNCTION_DECLs, evaluates true if the decl is built-in but has
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been declared. */
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#define C_DECL_DECLARED_BUILTIN(EXP) \
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DECL_LANG_FLAG_3 (FUNCTION_DECL_CHECK (EXP))
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/* For FUNCTION_DECLs, evaluates true if the decl is built-in, has a
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built-in prototype and does not have a non-built-in prototype. */
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#define C_DECL_BUILTIN_PROTOTYPE(EXP) \
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DECL_LANG_FLAG_6 (FUNCTION_DECL_CHECK (EXP))
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/* Record whether a decl was declared register. This is strictly a
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front-end flag, whereas DECL_REGISTER is used for code generation;
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they may differ for structures with volatile fields. */
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#define C_DECL_REGISTER(EXP) DECL_LANG_FLAG_4 (EXP)
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/* Record whether a decl was used in an expression anywhere except an
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unevaluated operand of sizeof / typeof / alignof. This is only
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used for functions declared static but not defined, though outside
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sizeof and typeof it is set for other function decls as well. */
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#define C_DECL_USED(EXP) DECL_LANG_FLAG_5 (FUNCTION_DECL_CHECK (EXP))
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/* Record whether a variable has been declared threadprivate by
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#pragma omp threadprivate. */
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#define C_DECL_THREADPRIVATE_P(DECL) DECL_LANG_FLAG_3 (VAR_DECL_CHECK (DECL))
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/* Set on VAR_DECLs for compound literals. */
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#define C_DECL_COMPOUND_LITERAL_P(DECL) \
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DECL_LANG_FLAG_5 (VAR_DECL_CHECK (DECL))
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/* Set on decls used as placeholders for a C2x underspecified object
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definition. */
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#define C_DECL_UNDERSPECIFIED(DECL) DECL_LANG_FLAG_7 (DECL)
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/* Set on VAR_DECLs declared as 'constexpr'. */
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#define C_DECL_DECLARED_CONSTEXPR(DECL) \
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DECL_LANG_FLAG_8 (VAR_DECL_CHECK (DECL))
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/* Nonzero for a decl which either doesn't exist or isn't a prototype.
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N.B. Could be simplified if all built-in decls had complete prototypes
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(but this is presently difficult because some of them need FILE*). */
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#define C_DECL_ISNT_PROTOTYPE(EXP) \
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(EXP == 0 \
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|| (!prototype_p (TREE_TYPE (EXP)) \
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&& !fndecl_built_in_p (EXP)))
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/* For FUNCTION_TYPE, a hidden list of types of arguments. The same as
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TYPE_ARG_TYPES for functions with prototypes, but created for functions
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without prototypes. */
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#define TYPE_ACTUAL_ARG_TYPES(NODE) \
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TYPE_LANG_SLOT_1 (FUNCTION_TYPE_CHECK (NODE))
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/* For a CONSTRUCTOR, whether some initializer contains a
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subexpression meaning it is not a constant expression. */
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#define CONSTRUCTOR_NON_CONST(EXPR) TREE_LANG_FLAG_1 (CONSTRUCTOR_CHECK (EXPR))
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/* For a SAVE_EXPR, nonzero if the operand of the SAVE_EXPR has already
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been folded. */
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#define SAVE_EXPR_FOLDED_P(EXP) TREE_LANG_FLAG_1 (SAVE_EXPR_CHECK (EXP))
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/* Whether a type has boolean semantics: either a boolean type or an
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enumeration type with a boolean type as its underlying type. */
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#define C_BOOLEAN_TYPE_P(TYPE) \
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(TREE_CODE (TYPE) == BOOLEAN_TYPE \
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|| (TREE_CODE (TYPE) == ENUMERAL_TYPE \
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&& ENUM_UNDERLYING_TYPE (TYPE) != NULL_TREE \
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&& TREE_CODE (ENUM_UNDERLYING_TYPE (TYPE)) == BOOLEAN_TYPE))
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/* Record parser information about an expression that is irrelevant
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for code generation alongside a tree representing its value. */
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struct c_expr
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{
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/* The value of the expression. */
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tree value;
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/* Record the original unary/binary operator of an expression, which may
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have been changed by fold, STRING_CST for unparenthesized string
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constants, C_MAYBE_CONST_EXPR for __builtin_constant_p calls
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(even if parenthesized), for subexpressions, and for non-constant
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initializers, or ERROR_MARK for other expressions (including
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parenthesized expressions). */
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enum tree_code original_code;
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/* If not NULL, the original type of an expression. This will
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differ from the type of the value field for an enum constant.
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The type of an enum constant is a plain integer type, but this
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field will be the enum type. */
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tree original_type;
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/* The source range of this expression. This is redundant
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for node values that have locations, but not all node kinds
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have locations (e.g. constants, and references to params, locals,
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etc), so we stash a copy here. */
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source_range src_range;
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/* True if this was directly from a decimal constant token. */
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bool m_decimal : 1;
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/* Access to the first and last locations within the source spelling
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of this expression. */
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location_t get_start () const { return src_range.m_start; }
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location_t get_finish () const { return src_range.m_finish; }
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location_t get_location () const
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{
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if (EXPR_HAS_LOCATION (value))
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return EXPR_LOCATION (value);
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else
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return make_location (get_start (), get_start (), get_finish ());
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}
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/* Set the value to error_mark_node whilst ensuring that src_range
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and m_decimal are initialized. */
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void set_error ()
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{
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value = error_mark_node;
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src_range.m_start = UNKNOWN_LOCATION;
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src_range.m_finish = UNKNOWN_LOCATION;
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m_decimal = 0;
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}
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};
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/* Type alias for struct c_expr. This allows to use the structure
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inside the VEC types. */
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typedef struct c_expr c_expr_t;
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/* A kind of type specifier. Note that this information is currently
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only used to distinguish tag definitions, tag references and typeof
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uses. */
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enum c_typespec_kind {
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/* No typespec. This appears only in struct c_declspec. */
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ctsk_none,
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/* A reserved keyword type specifier. */
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ctsk_resword,
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/* A reference to a tag, previously declared, such as "struct foo".
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This includes where the previous declaration was as a different
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kind of tag, in which case this is only valid if shadowing that
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tag in an inner scope. */
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ctsk_tagref,
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/* Likewise, with standard attributes present in the reference. */
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ctsk_tagref_attrs,
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/* A reference to a tag, not previously declared in a visible
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scope. */
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ctsk_tagfirstref,
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/* Likewise, with standard attributes present in the reference. */
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ctsk_tagfirstref_attrs,
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/* A definition of a tag such as "struct foo { int a; }". */
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ctsk_tagdef,
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/* A typedef name. */
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ctsk_typedef,
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/* An ObjC-specific kind of type specifier. */
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ctsk_objc,
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/* A typeof specifier, or _Atomic ( type-name ). */
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ctsk_typeof
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};
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/* A type specifier: this structure is created in the parser and
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passed to declspecs_add_type only. */
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struct c_typespec {
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/* What kind of type specifier this is. */
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enum c_typespec_kind kind;
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/* Whether the expression has operands suitable for use in constant
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expressions. */
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bool expr_const_operands;
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/* Whether the type specifier includes an enum type specifier (that
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is, ": specifier-qualifier-list" in a declaration using
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"enum"). */
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bool has_enum_type_specifier;
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/* The specifier itself. */
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tree spec;
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/* An expression to be evaluated before the type specifier, in the
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case of typeof specifiers, or NULL otherwise or if no such
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expression is required for a particular typeof specifier. In
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particular, when typeof is applied to an expression of variably
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modified type, that expression must be evaluated in order to
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determine array sizes that form part of the type, but the
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expression itself (as opposed to the array sizes) forms no part
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of the type and so needs to be recorded separately. */
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tree expr;
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};
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/* A storage class specifier. */
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enum c_storage_class {
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csc_none,
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csc_auto,
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csc_extern,
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csc_register,
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csc_static,
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csc_typedef
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};
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/* A type specifier keyword "void", "_Bool", "char", "int", "float",
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"double", "_Decimal32", "_Decimal64", "_Decimal128", "_Fract", "_Accum",
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or none of these. */
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enum c_typespec_keyword {
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cts_none,
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cts_void,
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cts_bool,
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cts_char,
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cts_int,
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cts_float,
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cts_int_n,
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cts_double,
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cts_dfloat32,
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cts_dfloat64,
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cts_dfloat128,
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cts_floatn_nx,
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cts_fract,
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cts_accum,
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cts_auto_type
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};
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/* This enum lists all the possible declarator specifiers, storage
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class or attribute that a user can write. There is at least one
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enumerator per possible declarator specifier in the struct
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c_declspecs below.
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It is used to index the array of declspec locations in struct
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c_declspecs. */
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enum c_declspec_word {
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cdw_typespec /* A catch-all for a typespec. */,
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cdw_storage_class /* A catch-all for a storage class */,
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cdw_attributes,
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cdw_typedef,
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cdw_explicit_signed,
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cdw_deprecated,
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cdw_default_int,
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cdw_long,
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cdw_long_long,
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cdw_short,
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cdw_signed,
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cdw_unsigned,
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cdw_complex,
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cdw_inline,
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cdw_noreturn,
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cdw_thread,
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cdw_const,
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cdw_volatile,
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cdw_restrict,
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cdw_atomic,
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cdw_saturating,
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cdw_alignas,
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cdw_address_space,
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cdw_gimple,
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cdw_rtl,
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cdw_number_of_elements /* This one must always be the last
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enumerator. */
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};
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enum c_declspec_il {
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cdil_none,
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cdil_gimple, /* __GIMPLE */
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cdil_gimple_cfg, /* __GIMPLE(cfg) */
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cdil_gimple_ssa, /* __GIMPLE(ssa) */
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cdil_rtl /* __RTL */
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};
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/* A sequence of declaration specifiers in C. When a new declaration
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specifier is added, please update the enum c_declspec_word above
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accordingly. */
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struct c_declspecs {
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location_t locations[cdw_number_of_elements];
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/* The type specified, if a single type specifier such as a struct,
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union or enum specifier, typedef name or typeof specifies the
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whole type, or NULL_TREE if none or a keyword such as "void" or
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"char" is used. Does not include qualifiers. */
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tree type;
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/* Any expression to be evaluated before the type, from a typeof
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specifier. */
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tree expr;
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/* The attributes from a typedef decl. */
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tree decl_attr;
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/* When parsing, the GNU attributes and prefix standard attributes.
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Outside the parser, this will be NULL; attributes (possibly from
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multiple lists) will be passed separately. */
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tree attrs;
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/* When parsing, postfix standard attributes (which appertain to the
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type specified by the preceding declaration specifiers, unlike
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prefix standard attributes which appertain to the declaration or
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declarations as a whole). */
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tree postfix_attrs;
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/* The pass to start compiling a __GIMPLE or __RTL function with. */
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char *gimple_or_rtl_pass;
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/* ENTRY BB count. */
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profile_count entry_bb_count;
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/* The base-2 log of the greatest alignment required by an _Alignas
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specifier, in bytes, or -1 if no such specifiers with nonzero
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alignment. */
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int align_log;
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/* For the __intN declspec, this stores the index into the int_n_* arrays. */
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int int_n_idx;
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/* For the _FloatN and _FloatNx declspec, this stores the index into
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the floatn_nx_types array. */
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int floatn_nx_idx;
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/* The storage class specifier, or csc_none if none. */
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enum c_storage_class storage_class;
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/* Any type specifier keyword used such as "int", not reflecting
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modifiers such as "short", or cts_none if none. */
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ENUM_BITFIELD (c_typespec_keyword) typespec_word : 8;
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/* The kind of type specifier if one has been seen, ctsk_none
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otherwise. */
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ENUM_BITFIELD (c_typespec_kind) typespec_kind : 4;
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ENUM_BITFIELD (c_declspec_il) declspec_il : 3;
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/* Whether any expressions in typeof specifiers may appear in
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constant expressions. */
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BOOL_BITFIELD expr_const_operands : 1;
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/* Whether any declaration specifiers have been seen at all. */
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BOOL_BITFIELD declspecs_seen_p : 1;
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/* Whether any declaration specifiers other than standard attributes
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have been seen at all. If only standard attributes have been
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seen, this is an attribute-declaration. */
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BOOL_BITFIELD non_std_attrs_seen_p : 1;
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/* Whether something other than a storage class specifier or
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attribute has been seen. This is used to warn for the
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obsolescent usage of storage class specifiers other than at the
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start of the list. (Doing this properly would require function
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specifiers to be handled separately from storage class
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specifiers.) */
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BOOL_BITFIELD non_sc_seen_p : 1;
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/* Whether the type is specified by a typedef or typeof name. */
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BOOL_BITFIELD typedef_p : 1;
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/* Whether the type is explicitly "signed" or specified by a typedef
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whose type is explicitly "signed". */
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BOOL_BITFIELD explicit_signed_p : 1;
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/* Whether the specifiers include a deprecated typedef. */
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BOOL_BITFIELD deprecated_p : 1;
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/* Whether the specifiers include an unavailable typedef. */
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BOOL_BITFIELD unavailable_p : 1;
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/* Whether the type defaulted to "int" because there were no type
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specifiers. */
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BOOL_BITFIELD default_int_p : 1;
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/* Whether "long" was specified. */
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BOOL_BITFIELD long_p : 1;
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/* Whether "long" was specified more than once. */
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BOOL_BITFIELD long_long_p : 1;
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/* Whether "short" was specified. */
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BOOL_BITFIELD short_p : 1;
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/* Whether "signed" was specified. */
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BOOL_BITFIELD signed_p : 1;
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/* Whether "unsigned" was specified. */
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BOOL_BITFIELD unsigned_p : 1;
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/* Whether "complex" was specified. */
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BOOL_BITFIELD complex_p : 1;
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/* Whether "inline" was specified. */
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BOOL_BITFIELD inline_p : 1;
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/* Whether "_Noreturn" was speciied. */
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BOOL_BITFIELD noreturn_p : 1;
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/* Whether "__thread" or "_Thread_local" was specified. */
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BOOL_BITFIELD thread_p : 1;
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/* Whether "__thread" rather than "_Thread_local" was specified. */
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BOOL_BITFIELD thread_gnu_p : 1;
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/* Whether "const" was specified. */
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BOOL_BITFIELD const_p : 1;
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/* Whether "volatile" was specified. */
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BOOL_BITFIELD volatile_p : 1;
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/* Whether "restrict" was specified. */
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BOOL_BITFIELD restrict_p : 1;
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/* Whether "_Atomic" was specified. */
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BOOL_BITFIELD atomic_p : 1;
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/* Whether "_Sat" was specified. */
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BOOL_BITFIELD saturating_p : 1;
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/* Whether any alignment specifier (even with zero alignment) was
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specified. */
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BOOL_BITFIELD alignas_p : 1;
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/* Whether an enum type specifier (": specifier-qualifier-list") was
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specified other than in a definition of that enum (if so, this is
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invalid unless it is an empty declaration "enum identifier
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enum-type-specifier;", but such an empty declaration is valid in
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C2x when "enum identifier;" would not be). */
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BOOL_BITFIELD enum_type_specifier_ref_p : 1;
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/* Whether "auto" was specified in C2X (or later) mode and means the
|
||
type is to be deduced from an initializer, or would mean that if
|
||
no type specifier appears later in these declaration
|
||
specifiers. */
|
||
BOOL_BITFIELD c2x_auto_p : 1;
|
||
/* Whether "constexpr" was specified. */
|
||
BOOL_BITFIELD constexpr_p : 1;
|
||
/* The address space that the declaration belongs to. */
|
||
addr_space_t address_space;
|
||
};
|
||
|
||
/* The various kinds of declarators in C. */
|
||
enum c_declarator_kind {
|
||
/* An identifier. */
|
||
cdk_id,
|
||
/* A function. */
|
||
cdk_function,
|
||
/* An array. */
|
||
cdk_array,
|
||
/* A pointer. */
|
||
cdk_pointer,
|
||
/* Parenthesized declarator with nested attributes. */
|
||
cdk_attrs
|
||
};
|
||
|
||
struct c_arg_tag {
|
||
/* The argument name. */
|
||
tree id;
|
||
/* The type of the argument. */
|
||
tree type;
|
||
};
|
||
|
||
|
||
/* Information about the parameters in a function declarator. */
|
||
struct c_arg_info {
|
||
/* A list of parameter decls. */
|
||
tree parms;
|
||
/* A list of structure, union and enum tags defined. */
|
||
vec<c_arg_tag, va_gc> *tags;
|
||
/* A list of argument types to go in the FUNCTION_TYPE. */
|
||
tree types;
|
||
/* A list of non-parameter decls (notably enumeration constants)
|
||
defined with the parameters. */
|
||
tree others;
|
||
/* A compound expression of VLA sizes from the parameters, or NULL.
|
||
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;
|
||
/* True when the arguments are a (...) prototype. */
|
||
BOOL_BITFIELD no_named_args_stdarg_p : 1;
|
||
};
|
||
|
||
/* A declarator. */
|
||
struct c_declarator {
|
||
/* The kind of declarator. */
|
||
enum c_declarator_kind kind;
|
||
location_t id_loc; /* Currently only set for cdk_id, cdk_array. */
|
||
/* Except for cdk_id, the contained declarator. For cdk_id, NULL. */
|
||
struct c_declarator *declarator;
|
||
union {
|
||
/* For identifiers. */
|
||
struct {
|
||
/* An IDENTIFIER_NODE, or NULL_TREE if an abstract
|
||
declarator. */
|
||
tree id;
|
||
/* Any attributes (which apply to the declaration rather than to
|
||
the type described by the outer declarators). */
|
||
tree attrs;
|
||
} id;
|
||
/* For functions. */
|
||
struct c_arg_info *arg_info;
|
||
/* For arrays. */
|
||
struct {
|
||
/* The array dimension, or NULL for [] and [*]. */
|
||
tree dimen;
|
||
/* The qualifiers inside []. */
|
||
int quals;
|
||
/* The attributes (currently ignored) inside []. */
|
||
tree attrs;
|
||
/* Whether [static] was used. */
|
||
BOOL_BITFIELD static_p : 1;
|
||
/* Whether [*] was used. */
|
||
BOOL_BITFIELD vla_unspec_p : 1;
|
||
} array;
|
||
/* For pointers, the qualifiers on the pointer type. */
|
||
int pointer_quals;
|
||
/* For attributes. */
|
||
tree attrs;
|
||
} u;
|
||
};
|
||
|
||
/* A type name. */
|
||
struct c_type_name {
|
||
/* The declaration specifiers. */
|
||
struct c_declspecs *specs;
|
||
/* The declarator. */
|
||
struct c_declarator *declarator;
|
||
};
|
||
|
||
/* A parameter. */
|
||
struct c_parm {
|
||
/* The declaration specifiers, minus any prefix attributes. */
|
||
struct c_declspecs *specs;
|
||
/* The attributes. */
|
||
tree attrs;
|
||
/* The declarator. */
|
||
struct c_declarator *declarator;
|
||
/* The location of the parameter. */
|
||
location_t loc;
|
||
};
|
||
|
||
/* 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;
|
||
|
||
/* The enumeration type itself. */
|
||
tree enum_type;
|
||
|
||
/* Nonzero means that there was overflow computing enum_next_value. */
|
||
int enum_overflow;
|
||
};
|
||
|
||
/* A type of reference to a static identifier in an inline
|
||
function. */
|
||
enum c_inline_static_type {
|
||
/* Identifier with internal linkage used in function that may be an
|
||
inline definition (i.e., file-scope static). */
|
||
csi_internal,
|
||
/* Modifiable object with static storage duration defined in
|
||
function that may be an inline definition (i.e., local
|
||
static). */
|
||
csi_modifiable
|
||
};
|
||
|
||
|
||
/* in c-parser.cc */
|
||
extern void c_parse_init (void);
|
||
extern bool c_keyword_starts_typename (enum rid keyword);
|
||
|
||
/* in c-aux-info.cc */
|
||
extern void gen_aux_info_record (tree, int, int, int);
|
||
|
||
/* in c-decl.cc */
|
||
struct c_spot_bindings;
|
||
class c_struct_parse_info;
|
||
extern struct obstack parser_obstack;
|
||
/* Set to IN_ITERATION_STMT if parsing an iteration-statement,
|
||
to IN_OMP_BLOCK if parsing OpenMP structured block and
|
||
IN_OMP_FOR if parsing OpenMP loop. If parsing a switch statement,
|
||
this is bitwise ORed with IN_SWITCH_STMT, unless parsing an
|
||
iteration-statement, OpenMP block or loop within that switch. */
|
||
#define IN_SWITCH_STMT 1
|
||
#define IN_ITERATION_STMT 2
|
||
#define IN_OMP_BLOCK 4
|
||
#define IN_OMP_FOR 8
|
||
#define IN_OBJC_FOREACH 16
|
||
extern unsigned char in_statement;
|
||
|
||
extern bool switch_statement_break_seen_p;
|
||
|
||
extern bool global_bindings_p (void);
|
||
extern tree pushdecl (tree);
|
||
extern unsigned int start_underspecified_init (location_t, tree);
|
||
extern void finish_underspecified_init (tree, unsigned int);
|
||
extern void push_scope (void);
|
||
extern tree pop_scope (void);
|
||
extern void c_bindings_start_stmt_expr (struct c_spot_bindings *);
|
||
extern void c_bindings_end_stmt_expr (struct c_spot_bindings *);
|
||
|
||
extern void record_inline_static (location_t, tree, tree,
|
||
enum c_inline_static_type);
|
||
extern void c_init_decl_processing (void);
|
||
extern void c_print_identifier (FILE *, tree, int);
|
||
extern int quals_from_declspecs (const struct c_declspecs *);
|
||
extern struct c_declarator *build_array_declarator (location_t, tree,
|
||
struct c_declspecs *,
|
||
bool, bool);
|
||
extern tree build_enumerator (location_t, location_t, struct c_enum_contents *,
|
||
tree, tree);
|
||
extern tree check_for_loop_decls (location_t, bool);
|
||
extern void mark_forward_parm_decls (void);
|
||
extern void declare_parm_level (void);
|
||
extern void undeclared_variable (location_t, tree);
|
||
extern tree lookup_label_for_goto (location_t, tree);
|
||
extern tree declare_label (tree);
|
||
extern tree define_label (location_t, tree);
|
||
extern struct c_spot_bindings *c_get_switch_bindings (void);
|
||
extern void c_release_switch_bindings (struct c_spot_bindings *);
|
||
extern bool c_check_switch_jump_warnings (struct c_spot_bindings *,
|
||
location_t, location_t);
|
||
extern void finish_decl (tree, location_t, tree, tree, tree);
|
||
extern tree finish_enum (tree, tree, tree);
|
||
extern void finish_function (location_t = input_location);
|
||
extern tree finish_struct (location_t, tree, tree, tree,
|
||
class c_struct_parse_info *);
|
||
extern tree c_simulate_enum_decl (location_t, const char *,
|
||
vec<string_int_pair> *);
|
||
extern tree c_simulate_record_decl (location_t, const char *,
|
||
array_slice<const tree>);
|
||
extern struct c_arg_info *build_arg_info (void);
|
||
extern struct c_arg_info *get_parm_info (bool, tree);
|
||
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 *, tree *);
|
||
extern tree implicitly_declare (location_t, tree);
|
||
extern void keep_next_level (void);
|
||
extern void pending_xref_error (void);
|
||
extern void c_push_function_context (void);
|
||
extern void c_pop_function_context (void);
|
||
extern void push_parm_decl (const struct c_parm *, tree *);
|
||
extern struct c_declarator *set_array_declarator_inner (struct c_declarator *,
|
||
struct c_declarator *);
|
||
extern tree c_builtin_function (tree);
|
||
extern tree c_builtin_function_ext_scope (tree);
|
||
extern tree c_simulate_builtin_function_decl (tree);
|
||
extern void c_warn_unused_attributes (tree);
|
||
extern tree c_warn_type_attributes (tree);
|
||
extern void shadow_tag (const struct c_declspecs *);
|
||
extern void shadow_tag_warned (const struct c_declspecs *, int);
|
||
extern tree start_enum (location_t, struct c_enum_contents *, tree, tree);
|
||
extern bool start_function (struct c_declspecs *, struct c_declarator *, tree);
|
||
extern tree start_decl (struct c_declarator *, struct c_declspecs *, bool,
|
||
tree, bool = true, location_t * = NULL);
|
||
extern tree start_struct (location_t, enum tree_code, tree,
|
||
class c_struct_parse_info **);
|
||
extern void store_parm_decls (void);
|
||
extern void store_parm_decls_from (struct c_arg_info *);
|
||
extern void temp_store_parm_decls (tree, tree);
|
||
extern void temp_pop_parm_decls (void);
|
||
extern tree xref_tag (enum tree_code, tree);
|
||
extern struct c_typespec parser_xref_tag (location_t, enum tree_code, tree,
|
||
bool, tree, bool);
|
||
extern struct c_parm *build_c_parm (struct c_declspecs *, tree,
|
||
struct c_declarator *, location_t);
|
||
extern struct c_declarator *build_attrs_declarator (tree,
|
||
struct c_declarator *);
|
||
extern struct c_declarator *build_function_declarator (struct c_arg_info *,
|
||
struct c_declarator *);
|
||
extern struct c_declarator *build_id_declarator (tree);
|
||
extern struct c_declarator *make_pointer_declarator (struct c_declspecs *,
|
||
struct c_declarator *);
|
||
extern struct c_declspecs *build_null_declspecs (void);
|
||
extern struct c_declspecs *declspecs_add_qual (location_t,
|
||
struct c_declspecs *, tree);
|
||
extern struct c_declspecs *declspecs_add_type (location_t,
|
||
struct c_declspecs *,
|
||
struct c_typespec);
|
||
extern struct c_declspecs *declspecs_add_scspec (location_t,
|
||
struct c_declspecs *, tree);
|
||
extern struct c_declspecs *declspecs_add_attrs (location_t,
|
||
struct c_declspecs *, tree);
|
||
extern struct c_declspecs *declspecs_add_addrspace (location_t,
|
||
struct c_declspecs *,
|
||
addr_space_t);
|
||
extern struct c_declspecs *declspecs_add_alignas (location_t,
|
||
struct c_declspecs *, tree);
|
||
extern struct c_declspecs *finish_declspecs (struct c_declspecs *);
|
||
|
||
/* in c-objc-common.cc */
|
||
extern bool c_objc_common_init (void);
|
||
extern bool c_missing_noreturn_ok_p (tree);
|
||
extern bool c_warn_unused_global_decl (const_tree);
|
||
extern void c_initialize_diagnostics (diagnostic_context *);
|
||
extern bool c_var_mod_p (tree x, tree fn);
|
||
extern alias_set_type c_get_alias_set (tree);
|
||
|
||
/* in c-typeck.cc */
|
||
extern int in_alignof;
|
||
extern int in_sizeof;
|
||
extern int in_typeof;
|
||
extern bool c_in_omp_for;
|
||
|
||
extern tree c_last_sizeof_arg;
|
||
extern location_t c_last_sizeof_loc;
|
||
|
||
extern struct c_switch *c_switch_stack;
|
||
|
||
extern bool null_pointer_constant_p (const_tree);
|
||
|
||
|
||
inline
|
||
bool c_type_variably_modified_p (tree t)
|
||
{
|
||
return error_mark_node != t && C_TYPE_VARIABLY_MODIFIED (t);
|
||
}
|
||
|
||
|
||
extern bool char_type_p (tree);
|
||
extern tree c_objc_common_truthvalue_conversion (location_t, tree);
|
||
extern tree require_complete_type (location_t, tree);
|
||
extern bool same_translation_unit_p (const_tree, const_tree);
|
||
extern int comptypes (tree, tree);
|
||
extern int comptypes_check_different_types (tree, tree, bool *);
|
||
extern int comptypes_check_enum_int (tree, tree, bool *);
|
||
extern bool c_mark_addressable (tree, bool = false);
|
||
extern void c_incomplete_type_error (location_t, const_tree, const_tree);
|
||
extern tree c_type_promotes_to (tree);
|
||
extern struct c_expr default_function_array_conversion (location_t,
|
||
struct c_expr);
|
||
extern struct c_expr default_function_array_read_conversion (location_t,
|
||
struct c_expr);
|
||
extern struct c_expr convert_lvalue_to_rvalue (location_t, struct c_expr,
|
||
bool, bool, bool = false);
|
||
extern tree decl_constant_value_1 (tree, bool);
|
||
extern void mark_exp_read (tree);
|
||
extern tree composite_type (tree, tree);
|
||
extern tree build_component_ref (location_t, tree, tree, location_t,
|
||
location_t);
|
||
extern tree build_array_ref (location_t, tree, tree);
|
||
extern tree build_external_ref (location_t, tree, bool, tree *);
|
||
extern void pop_maybe_used (bool);
|
||
extern struct c_expr c_expr_sizeof_expr (location_t, struct c_expr);
|
||
extern struct c_expr c_expr_sizeof_type (location_t, struct c_type_name *);
|
||
extern struct c_expr parser_build_unary_op (location_t, enum tree_code,
|
||
struct c_expr);
|
||
extern struct c_expr parser_build_binary_op (location_t,
|
||
enum tree_code, struct c_expr,
|
||
struct c_expr);
|
||
extern tree build_conditional_expr (location_t, tree, bool, tree, tree,
|
||
location_t, tree, tree, location_t);
|
||
extern tree build_compound_expr (location_t, tree, tree);
|
||
extern tree c_cast_expr (location_t, struct c_type_name *, tree);
|
||
extern tree build_c_cast (location_t, tree, tree);
|
||
extern void store_init_value (location_t, tree, tree, tree);
|
||
extern void maybe_warn_string_init (location_t, tree, struct c_expr);
|
||
extern void start_init (tree, tree, bool, bool, rich_location *);
|
||
extern void finish_init (void);
|
||
extern void really_start_incremental_init (tree);
|
||
extern void finish_implicit_inits (location_t, struct obstack *);
|
||
extern void push_init_level (location_t, int, struct obstack *);
|
||
extern struct c_expr pop_init_level (location_t, int, struct obstack *,
|
||
location_t);
|
||
extern void set_init_index (location_t, tree, tree, struct obstack *);
|
||
extern void set_init_label (location_t, tree, location_t, struct obstack *);
|
||
extern void process_init_element (location_t, struct c_expr, bool,
|
||
struct obstack *);
|
||
extern tree build_compound_literal (location_t, tree, tree, bool,
|
||
unsigned int, struct c_declspecs *);
|
||
extern void check_compound_literal_type (location_t, struct c_type_name *);
|
||
extern tree c_start_switch (location_t, location_t, tree, bool);
|
||
extern void c_finish_switch (tree, tree);
|
||
extern tree build_asm_expr (location_t, tree, tree, tree, tree, tree, bool,
|
||
bool);
|
||
extern tree build_asm_stmt (bool, tree);
|
||
extern int c_types_compatible_p (tree, tree);
|
||
extern tree c_begin_compound_stmt (bool);
|
||
extern tree c_end_compound_stmt (location_t, tree, bool);
|
||
extern void c_finish_if_stmt (location_t, tree, tree, tree);
|
||
extern void c_finish_loop (location_t, location_t, tree, location_t, tree,
|
||
tree, tree, tree, bool);
|
||
extern tree c_begin_stmt_expr (void);
|
||
extern tree c_finish_stmt_expr (location_t, tree);
|
||
extern tree c_process_expr_stmt (location_t, tree);
|
||
extern tree c_finish_expr_stmt (location_t, tree);
|
||
extern tree c_finish_return (location_t, tree, tree);
|
||
extern tree c_finish_bc_stmt (location_t, tree, bool);
|
||
extern tree c_finish_goto_label (location_t, tree);
|
||
extern tree c_finish_goto_ptr (location_t, c_expr val);
|
||
extern tree c_expr_to_decl (tree, bool *, bool *);
|
||
extern tree c_finish_omp_construct (location_t, enum tree_code, tree, tree);
|
||
extern tree c_finish_oacc_data (location_t, tree, tree);
|
||
extern tree c_finish_oacc_host_data (location_t, tree, tree);
|
||
extern tree c_begin_omp_parallel (void);
|
||
extern tree c_finish_omp_parallel (location_t, tree, tree);
|
||
extern tree c_begin_omp_task (void);
|
||
extern tree c_finish_omp_task (location_t, tree, tree);
|
||
extern void c_finish_omp_cancel (location_t, tree);
|
||
extern void c_finish_omp_cancellation_point (location_t, tree);
|
||
extern tree c_finish_omp_clauses (tree, enum c_omp_region_type);
|
||
extern tree c_build_va_arg (location_t, tree, location_t, tree);
|
||
extern tree c_finish_transaction (location_t, tree, int);
|
||
extern bool c_tree_equal (tree, tree);
|
||
extern tree c_build_function_call_vec (location_t, const vec<location_t>&,
|
||
tree, vec<tree, va_gc> *,
|
||
vec<tree, va_gc> *);
|
||
extern tree c_omp_clause_copy_ctor (tree, 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. */
|
||
|
||
extern int current_function_returns_value;
|
||
|
||
/* Set to 0 at beginning of a function definition, set to 1 if
|
||
a return statement with no argument is seen. */
|
||
|
||
extern int current_function_returns_null;
|
||
|
||
/* Set to 0 at beginning of a function definition, set to 1 if
|
||
a call to a noreturn function is seen. */
|
||
|
||
extern int current_function_returns_abnormally;
|
||
|
||
/* In c-decl.cc */
|
||
|
||
/* Tell the binding oracle what kind of binding we are looking for. */
|
||
|
||
enum c_oracle_request
|
||
{
|
||
C_ORACLE_SYMBOL,
|
||
C_ORACLE_TAG,
|
||
C_ORACLE_LABEL
|
||
};
|
||
|
||
/* If this is non-NULL, then it is a "binding oracle" which can lazily
|
||
create bindings when needed by the C compiler. The oracle is told
|
||
the name and type of the binding to create. It can call pushdecl
|
||
or the like to ensure the binding is visible; or do nothing,
|
||
leaving the binding untouched. c-decl.cc takes note of when the
|
||
oracle has been called and will not call it again if it fails to
|
||
create a given binding. */
|
||
|
||
typedef void c_binding_oracle_function (enum c_oracle_request, tree identifier);
|
||
|
||
extern c_binding_oracle_function *c_binding_oracle;
|
||
|
||
extern void c_finish_incomplete_decl (tree);
|
||
extern tree c_omp_reduction_id (enum tree_code, tree);
|
||
extern tree c_omp_reduction_decl (tree);
|
||
extern tree c_omp_reduction_lookup (tree, tree);
|
||
extern tree c_check_omp_declare_reduction_r (tree *, int *, void *);
|
||
extern bool c_check_in_current_scope (tree);
|
||
extern void c_pushtag (location_t, tree, tree);
|
||
extern void c_bind (location_t, tree, bool);
|
||
extern bool tag_exists_p (enum tree_code, tree);
|
||
|
||
/* In c-errors.cc */
|
||
extern bool pedwarn_c90 (location_t, int opt, const char *, ...)
|
||
ATTRIBUTE_GCC_DIAG(3,4);
|
||
extern bool pedwarn_c99 (location_t, int opt, const char *, ...)
|
||
ATTRIBUTE_GCC_DIAG(3,4);
|
||
extern bool pedwarn_c11 (location_t, int opt, const char *, ...)
|
||
ATTRIBUTE_GCC_DIAG(3,4);
|
||
|
||
extern void
|
||
set_c_expr_source_range (c_expr *expr,
|
||
location_t start, location_t finish);
|
||
|
||
extern void
|
||
set_c_expr_source_range (c_expr *expr,
|
||
source_range src_range);
|
||
|
||
/* In c-fold.cc */
|
||
extern vec<tree> incomplete_record_decls;
|
||
|
||
extern const char *c_get_sarif_source_language (const char *filename);
|
||
|
||
#if CHECKING_P
|
||
namespace selftest {
|
||
extern void run_c_tests (void);
|
||
} // namespace selftest
|
||
#endif /* #if CHECKING_P */
|
||
|
||
|
||
#endif /* ! GCC_C_TREE_H */
|