mirrored from git://gcc.gnu.org/git/gcc.git
/
error.c
3438 lines (3032 loc) · 91.9 KB
/
error.c
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/* Call-backs for C++ error reporting.
This code is non-reentrant.
Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003,
2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "cp-tree.h"
#include "flags.h"
#include "diagnostic.h"
#include "tree-diagnostic.h"
#include "langhooks-def.h"
#include "intl.h"
#include "cxx-pretty-print.h"
#include "tree-pretty-print.h"
#include "pointer-set.h"
#include "c-family/c-objc.h"
#define pp_separate_with_comma(PP) pp_cxx_separate_with (PP, ',')
#define pp_separate_with_semicolon(PP) pp_cxx_separate_with (PP, ';')
/* The global buffer where we dump everything. It is there only for
transitional purpose. It is expected, in the near future, to be
completely removed. */
static cxx_pretty_printer scratch_pretty_printer;
#define cxx_pp (&scratch_pretty_printer)
/* Translate if being used for diagnostics, but not for dump files or
__PRETTY_FUNCTION. */
#define M_(msgid) (pp_translate_identifiers (cxx_pp) ? _(msgid) : (msgid))
# define NEXT_CODE(T) (TREE_CODE (TREE_TYPE (T)))
static const char *args_to_string (tree, int);
static const char *assop_to_string (enum tree_code);
static const char *code_to_string (enum tree_code);
static const char *cv_to_string (tree, int);
static const char *decl_to_string (tree, int);
static const char *expr_to_string (tree);
static const char *fndecl_to_string (tree, int);
static const char *op_to_string (enum tree_code);
static const char *parm_to_string (int);
static const char *type_to_string (tree, int);
static void dump_alias_template_specialization (tree, int);
static void dump_type (tree, int);
static void dump_typename (tree, int);
static void dump_simple_decl (tree, tree, int);
static void dump_decl (tree, int);
static void dump_template_decl (tree, int);
static void dump_function_decl (tree, int);
static void dump_expr (tree, int);
static void dump_unary_op (const char *, tree, int);
static void dump_binary_op (const char *, tree, int);
static void dump_aggr_type (tree, int);
static void dump_type_prefix (tree, int);
static void dump_type_suffix (tree, int);
static void dump_function_name (tree, int);
static void dump_call_expr_args (tree, int, bool);
static void dump_aggr_init_expr_args (tree, int, bool);
static void dump_expr_list (tree, int);
static void dump_global_iord (tree);
static void dump_parameters (tree, int);
static void dump_exception_spec (tree, int);
static void dump_template_argument (tree, int);
static void dump_template_argument_list (tree, int);
static void dump_template_parameter (tree, int);
static void dump_template_bindings (tree, tree, VEC(tree,gc) *);
static void dump_scope (tree, int);
static void dump_template_parms (tree, int, int);
static int get_non_default_template_args_count (tree, int);
static const char *function_category (tree);
static void maybe_print_constexpr_context (diagnostic_context *);
static void maybe_print_instantiation_context (diagnostic_context *);
static void print_instantiation_full_context (diagnostic_context *);
static void print_instantiation_partial_context (diagnostic_context *,
struct tinst_level *,
location_t);
static void cp_diagnostic_starter (diagnostic_context *, diagnostic_info *);
static void cp_diagnostic_finalizer (diagnostic_context *, diagnostic_info *);
static void cp_print_error_function (diagnostic_context *, diagnostic_info *);
static bool cp_printer (pretty_printer *, text_info *, const char *,
int, bool, bool, bool);
void
init_error (void)
{
diagnostic_starter (global_dc) = cp_diagnostic_starter;
diagnostic_finalizer (global_dc) = cp_diagnostic_finalizer;
diagnostic_format_decoder (global_dc) = cp_printer;
pp_construct (pp_base (cxx_pp), NULL, 0);
pp_cxx_pretty_printer_init (cxx_pp);
}
/* Dump a scope, if deemed necessary. */
static void
dump_scope (tree scope, int flags)
{
int f = flags & (TFF_SCOPE | TFF_CHASE_TYPEDEF);
if (scope == NULL_TREE)
return;
if (TREE_CODE (scope) == NAMESPACE_DECL)
{
if (scope != global_namespace)
{
dump_decl (scope, f);
pp_cxx_colon_colon (cxx_pp);
}
}
else if (AGGREGATE_TYPE_P (scope))
{
dump_type (scope, f);
pp_cxx_colon_colon (cxx_pp);
}
else if ((flags & TFF_SCOPE) && TREE_CODE (scope) == FUNCTION_DECL)
{
dump_function_decl (scope, f);
pp_cxx_colon_colon (cxx_pp);
}
}
/* Dump the template ARGument under control of FLAGS. */
static void
dump_template_argument (tree arg, int flags)
{
if (ARGUMENT_PACK_P (arg))
dump_template_argument_list (ARGUMENT_PACK_ARGS (arg),
/* No default args in argument packs. */
flags|TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS);
else if (TYPE_P (arg) || TREE_CODE (arg) == TEMPLATE_DECL)
dump_type (arg, flags & ~TFF_CLASS_KEY_OR_ENUM);
else
{
if (TREE_CODE (arg) == TREE_LIST)
arg = TREE_VALUE (arg);
dump_expr (arg, (flags | TFF_EXPR_IN_PARENS) & ~TFF_CLASS_KEY_OR_ENUM);
}
}
/* Count the number of template arguments ARGS whose value does not
match the (optional) default template parameter in PARAMS */
static int
get_non_default_template_args_count (tree args, int flags)
{
int n = TREE_VEC_LENGTH (INNERMOST_TEMPLATE_ARGS (args));
if (/* We use this flag when generating debug information. We don't
want to expand templates at this point, for this may generate
new decls, which gets decl counts out of sync, which may in
turn cause codegen differences between compilations with and
without -g. */
(flags & TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS) != 0
|| !flag_pretty_templates)
return n;
return GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT (INNERMOST_TEMPLATE_ARGS (args));
}
/* Dump a template-argument-list ARGS (always a TREE_VEC) under control
of FLAGS. */
static void
dump_template_argument_list (tree args, int flags)
{
int n = get_non_default_template_args_count (args, flags);
int need_comma = 0;
int i;
for (i = 0; i < n; ++i)
{
tree arg = TREE_VEC_ELT (args, i);
/* Only print a comma if we know there is an argument coming. In
the case of an empty template argument pack, no actual
argument will be printed. */
if (need_comma
&& (!ARGUMENT_PACK_P (arg)
|| TREE_VEC_LENGTH (ARGUMENT_PACK_ARGS (arg)) > 0))
pp_separate_with_comma (cxx_pp);
dump_template_argument (arg, flags);
need_comma = 1;
}
}
/* Dump a template parameter PARM (a TREE_LIST) under control of FLAGS. */
static void
dump_template_parameter (tree parm, int flags)
{
tree p;
tree a;
if (parm == error_mark_node)
return;
p = TREE_VALUE (parm);
a = TREE_PURPOSE (parm);
if (TREE_CODE (p) == TYPE_DECL)
{
if (flags & TFF_DECL_SPECIFIERS)
{
pp_cxx_ws_string (cxx_pp, "class");
if (TEMPLATE_TYPE_PARAMETER_PACK (TREE_TYPE (p)))
pp_cxx_ws_string (cxx_pp, "...");
if (DECL_NAME (p))
pp_cxx_tree_identifier (cxx_pp, DECL_NAME (p));
}
else if (DECL_NAME (p))
pp_cxx_tree_identifier (cxx_pp, DECL_NAME (p));
else
pp_cxx_canonical_template_parameter (cxx_pp, TREE_TYPE (p));
}
else
dump_decl (p, flags | TFF_DECL_SPECIFIERS);
if ((flags & TFF_FUNCTION_DEFAULT_ARGUMENTS) && a != NULL_TREE)
{
pp_cxx_whitespace (cxx_pp);
pp_equal (cxx_pp);
pp_cxx_whitespace (cxx_pp);
if (TREE_CODE (p) == TYPE_DECL || TREE_CODE (p) == TEMPLATE_DECL)
dump_type (a, flags & ~TFF_CHASE_TYPEDEF);
else
dump_expr (a, flags | TFF_EXPR_IN_PARENS);
}
}
/* Dump, under control of FLAGS, a template-parameter-list binding.
PARMS is a TREE_LIST of TREE_VEC of TREE_LIST and ARGS is a
TREE_VEC. */
static void
dump_template_bindings (tree parms, tree args, VEC(tree,gc)* typenames)
{
bool need_semicolon = false;
int i;
tree t;
while (parms)
{
tree p = TREE_VALUE (parms);
int lvl = TMPL_PARMS_DEPTH (parms);
int arg_idx = 0;
int i;
tree lvl_args = NULL_TREE;
/* Don't crash if we had an invalid argument list. */
if (TMPL_ARGS_DEPTH (args) >= lvl)
lvl_args = TMPL_ARGS_LEVEL (args, lvl);
for (i = 0; i < TREE_VEC_LENGTH (p); ++i)
{
tree arg = NULL_TREE;
/* Don't crash if we had an invalid argument list. */
if (lvl_args && NUM_TMPL_ARGS (lvl_args) > arg_idx)
arg = TREE_VEC_ELT (lvl_args, arg_idx);
if (need_semicolon)
pp_separate_with_semicolon (cxx_pp);
dump_template_parameter (TREE_VEC_ELT (p, i), TFF_PLAIN_IDENTIFIER);
pp_cxx_whitespace (cxx_pp);
pp_equal (cxx_pp);
pp_cxx_whitespace (cxx_pp);
if (arg)
{
if (ARGUMENT_PACK_P (arg))
pp_cxx_left_brace (cxx_pp);
dump_template_argument (arg, TFF_PLAIN_IDENTIFIER);
if (ARGUMENT_PACK_P (arg))
pp_cxx_right_brace (cxx_pp);
}
else
pp_string (cxx_pp, M_("<missing>"));
++arg_idx;
need_semicolon = true;
}
parms = TREE_CHAIN (parms);
}
/* Don't bother with typenames for a partial instantiation. */
if (VEC_empty (tree, typenames) || uses_template_parms (args))
return;
FOR_EACH_VEC_ELT (tree, typenames, i, t)
{
if (need_semicolon)
pp_separate_with_semicolon (cxx_pp);
dump_type (t, TFF_PLAIN_IDENTIFIER);
pp_cxx_whitespace (cxx_pp);
pp_equal (cxx_pp);
pp_cxx_whitespace (cxx_pp);
push_deferring_access_checks (dk_no_check);
t = tsubst (t, args, tf_none, NULL_TREE);
pop_deferring_access_checks ();
/* Strip typedefs. We can't just use TFF_CHASE_TYPEDEF because
pp_simple_type_specifier doesn't know about it. */
t = strip_typedefs (t);
dump_type (t, TFF_PLAIN_IDENTIFIER);
}
}
/* Dump a human-readable equivalent of the alias template
specialization of T. */
static void
dump_alias_template_specialization (tree t, int flags)
{
tree name;
gcc_assert (alias_template_specialization_p (t));
if (!(flags & TFF_UNQUALIFIED_NAME))
dump_scope (CP_DECL_CONTEXT (TYPE_NAME (t)), flags);
name = TYPE_IDENTIFIER (t);
pp_cxx_tree_identifier (cxx_pp, name);
dump_template_parms (TYPE_TEMPLATE_INFO (t),
/*primary=*/false,
flags & ~TFF_TEMPLATE_HEADER);
}
/* Dump a human-readable equivalent of TYPE. FLAGS controls the
format. */
static void
dump_type (tree t, int flags)
{
if (t == NULL_TREE)
return;
/* Don't print e.g. "struct mytypedef". */
if (TYPE_P (t) && typedef_variant_p (t))
{
tree decl = TYPE_NAME (t);
if ((flags & TFF_CHASE_TYPEDEF)
|| DECL_SELF_REFERENCE_P (decl)
|| (!flag_pretty_templates
&& DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl)))
t = strip_typedefs (t);
else if (alias_template_specialization_p (t))
{
dump_alias_template_specialization (t, flags);
return;
}
else if (same_type_p (t, TREE_TYPE (decl)))
t = decl;
else
{
pp_cxx_cv_qualifier_seq (cxx_pp, t);
pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t));
return;
}
}
if (TYPE_PTRMEMFUNC_P (t))
goto offset_type;
switch (TREE_CODE (t))
{
case LANG_TYPE:
if (t == init_list_type_node)
pp_string (cxx_pp, M_("<brace-enclosed initializer list>"));
else if (t == unknown_type_node)
pp_string (cxx_pp, M_("<unresolved overloaded function type>"));
else
{
pp_cxx_cv_qualifier_seq (cxx_pp, t);
pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t));
}
break;
case TREE_LIST:
/* A list of function parms. */
dump_parameters (t, flags);
break;
case IDENTIFIER_NODE:
pp_cxx_tree_identifier (cxx_pp, t);
break;
case TREE_BINFO:
dump_type (BINFO_TYPE (t), flags);
break;
case RECORD_TYPE:
case UNION_TYPE:
case ENUMERAL_TYPE:
dump_aggr_type (t, flags);
break;
case TYPE_DECL:
if (flags & TFF_CHASE_TYPEDEF)
{
dump_type (DECL_ORIGINAL_TYPE (t)
? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t), flags);
break;
}
/* Else fall through. */
case TEMPLATE_DECL:
case NAMESPACE_DECL:
dump_decl (t, flags & ~TFF_DECL_SPECIFIERS);
break;
case INTEGER_TYPE:
case REAL_TYPE:
case VOID_TYPE:
case BOOLEAN_TYPE:
case COMPLEX_TYPE:
case VECTOR_TYPE:
case FIXED_POINT_TYPE:
pp_type_specifier_seq (cxx_pp, t);
break;
case TEMPLATE_TEMPLATE_PARM:
/* For parameters inside template signature. */
if (TYPE_IDENTIFIER (t))
pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t));
else
pp_cxx_canonical_template_parameter (cxx_pp, t);
break;
case BOUND_TEMPLATE_TEMPLATE_PARM:
{
tree args = TYPE_TI_ARGS (t);
pp_cxx_cv_qualifier_seq (cxx_pp, t);
pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t));
pp_cxx_begin_template_argument_list (cxx_pp);
dump_template_argument_list (args, flags);
pp_cxx_end_template_argument_list (cxx_pp);
}
break;
case TEMPLATE_TYPE_PARM:
pp_cxx_cv_qualifier_seq (cxx_pp, t);
if (TYPE_IDENTIFIER (t))
pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t));
else
pp_cxx_canonical_template_parameter
(cxx_pp, TEMPLATE_TYPE_PARM_INDEX (t));
break;
/* This is not always necessary for pointers and such, but doing this
reduces code size. */
case ARRAY_TYPE:
case POINTER_TYPE:
case REFERENCE_TYPE:
case OFFSET_TYPE:
offset_type:
case FUNCTION_TYPE:
case METHOD_TYPE:
{
dump_type_prefix (t, flags);
dump_type_suffix (t, flags);
break;
}
case TYPENAME_TYPE:
if (! (flags & TFF_CHASE_TYPEDEF)
&& DECL_ORIGINAL_TYPE (TYPE_NAME (t)))
{
dump_decl (TYPE_NAME (t), TFF_PLAIN_IDENTIFIER);
break;
}
pp_cxx_cv_qualifier_seq (cxx_pp, t);
pp_cxx_ws_string (cxx_pp,
TYPENAME_IS_ENUM_P (t) ? "enum"
: TYPENAME_IS_CLASS_P (t) ? "class"
: "typename");
dump_typename (t, flags);
break;
case UNBOUND_CLASS_TEMPLATE:
if (! (flags & TFF_UNQUALIFIED_NAME))
{
dump_type (TYPE_CONTEXT (t), flags);
pp_cxx_colon_colon (cxx_pp);
}
pp_cxx_ws_string (cxx_pp, "template");
dump_type (DECL_NAME (TYPE_NAME (t)), flags);
break;
case TYPEOF_TYPE:
pp_cxx_ws_string (cxx_pp, "__typeof__");
pp_cxx_whitespace (cxx_pp);
pp_cxx_left_paren (cxx_pp);
dump_expr (TYPEOF_TYPE_EXPR (t), flags & ~TFF_EXPR_IN_PARENS);
pp_cxx_right_paren (cxx_pp);
break;
case UNDERLYING_TYPE:
pp_cxx_ws_string (cxx_pp, "__underlying_type");
pp_cxx_whitespace (cxx_pp);
pp_cxx_left_paren (cxx_pp);
dump_expr (UNDERLYING_TYPE_TYPE (t), flags & ~TFF_EXPR_IN_PARENS);
pp_cxx_right_paren (cxx_pp);
break;
case TYPE_PACK_EXPANSION:
dump_type (PACK_EXPANSION_PATTERN (t), flags);
pp_cxx_ws_string (cxx_pp, "...");
break;
case TYPE_ARGUMENT_PACK:
dump_template_argument (t, flags);
break;
case DECLTYPE_TYPE:
pp_cxx_ws_string (cxx_pp, "decltype");
pp_cxx_whitespace (cxx_pp);
pp_cxx_left_paren (cxx_pp);
dump_expr (DECLTYPE_TYPE_EXPR (t), flags & ~TFF_EXPR_IN_PARENS);
pp_cxx_right_paren (cxx_pp);
break;
case NULLPTR_TYPE:
pp_string (cxx_pp, "std::nullptr_t");
break;
default:
pp_unsupported_tree (cxx_pp, t);
/* Fall through to error. */
case ERROR_MARK:
pp_string (cxx_pp, M_("<type error>"));
break;
}
}
/* Dump a TYPENAME_TYPE. We need to notice when the context is itself
a TYPENAME_TYPE. */
static void
dump_typename (tree t, int flags)
{
tree ctx = TYPE_CONTEXT (t);
if (TREE_CODE (ctx) == TYPENAME_TYPE)
dump_typename (ctx, flags);
else
dump_type (ctx, flags & ~TFF_CLASS_KEY_OR_ENUM);
pp_cxx_colon_colon (cxx_pp);
dump_decl (TYPENAME_TYPE_FULLNAME (t), flags);
}
/* Return the name of the supplied aggregate, or enumeral type. */
const char *
class_key_or_enum_as_string (tree t)
{
if (TREE_CODE (t) == ENUMERAL_TYPE)
{
if (SCOPED_ENUM_P (t))
return "enum class";
else
return "enum";
}
else if (TREE_CODE (t) == UNION_TYPE)
return "union";
else if (TYPE_LANG_SPECIFIC (t) && CLASSTYPE_DECLARED_CLASS (t))
return "class";
else
return "struct";
}
/* Print out a class declaration T under the control of FLAGS,
in the form `class foo'. */
static void
dump_aggr_type (tree t, int flags)
{
tree name;
const char *variety = class_key_or_enum_as_string (t);
int typdef = 0;
int tmplate = 0;
pp_cxx_cv_qualifier_seq (cxx_pp, t);
if (flags & TFF_CLASS_KEY_OR_ENUM)
pp_cxx_ws_string (cxx_pp, variety);
name = TYPE_NAME (t);
if (name)
{
typdef = (!DECL_ARTIFICIAL (name)
/* An alias specialization is not considered to be a
typedef. */
&& !alias_template_specialization_p (t));
if ((typdef
&& ((flags & TFF_CHASE_TYPEDEF)
|| (!flag_pretty_templates && DECL_LANG_SPECIFIC (name)
&& DECL_TEMPLATE_INFO (name))))
|| DECL_SELF_REFERENCE_P (name))
{
t = TYPE_MAIN_VARIANT (t);
name = TYPE_NAME (t);
typdef = 0;
}
tmplate = !typdef && TREE_CODE (t) != ENUMERAL_TYPE
&& TYPE_LANG_SPECIFIC (t) && CLASSTYPE_TEMPLATE_INFO (t)
&& (TREE_CODE (CLASSTYPE_TI_TEMPLATE (t)) != TEMPLATE_DECL
|| PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t)));
if (! (flags & TFF_UNQUALIFIED_NAME))
dump_scope (CP_DECL_CONTEXT (name), flags | TFF_SCOPE);
flags &= ~TFF_UNQUALIFIED_NAME;
if (tmplate)
{
/* Because the template names are mangled, we have to locate
the most general template, and use that name. */
tree tpl = TYPE_TI_TEMPLATE (t);
while (DECL_TEMPLATE_INFO (tpl))
tpl = DECL_TI_TEMPLATE (tpl);
name = tpl;
}
name = DECL_NAME (name);
}
if (name == 0 || ANON_AGGRNAME_P (name))
{
if (flags & TFF_CLASS_KEY_OR_ENUM)
pp_string (cxx_pp, M_("<anonymous>"));
else
pp_printf (pp_base (cxx_pp), M_("<anonymous %s>"), variety);
}
else if (LAMBDANAME_P (name))
{
/* A lambda's "type" is essentially its signature. */
pp_string (cxx_pp, M_("<lambda"));
if (lambda_function (t))
dump_parameters (FUNCTION_FIRST_USER_PARMTYPE (lambda_function (t)),
flags);
pp_character(cxx_pp, '>');
}
else
pp_cxx_tree_identifier (cxx_pp, name);
if (tmplate)
dump_template_parms (TYPE_TEMPLATE_INFO (t),
!CLASSTYPE_USE_TEMPLATE (t),
flags & ~TFF_TEMPLATE_HEADER);
}
/* Dump into the obstack the initial part of the output for a given type.
This is necessary when dealing with things like functions returning
functions. Examples:
return type of `int (* fee ())()': pointer -> function -> int. Both
pointer (and reference and offset) and function (and member) types must
deal with prefix and suffix.
Arrays must also do this for DECL nodes, like int a[], and for things like
int *[]&. */
static void
dump_type_prefix (tree t, int flags)
{
if (TYPE_PTRMEMFUNC_P (t))
{
t = TYPE_PTRMEMFUNC_FN_TYPE (t);
goto offset_type;
}
switch (TREE_CODE (t))
{
case POINTER_TYPE:
case REFERENCE_TYPE:
{
tree sub = TREE_TYPE (t);
dump_type_prefix (sub, flags);
if (TREE_CODE (sub) == ARRAY_TYPE
|| TREE_CODE (sub) == FUNCTION_TYPE)
{
pp_cxx_whitespace (cxx_pp);
pp_cxx_left_paren (cxx_pp);
pp_c_attributes_display (pp_c_base (cxx_pp),
TYPE_ATTRIBUTES (sub));
}
if (TREE_CODE (t) == POINTER_TYPE)
pp_character(cxx_pp, '*');
else if (TREE_CODE (t) == REFERENCE_TYPE)
{
if (TYPE_REF_IS_RVALUE (t))
pp_string (cxx_pp, "&&");
else
pp_character (cxx_pp, '&');
}
pp_base (cxx_pp)->padding = pp_before;
pp_cxx_cv_qualifier_seq (cxx_pp, t);
}
break;
case OFFSET_TYPE:
offset_type:
dump_type_prefix (TREE_TYPE (t), flags);
if (TREE_CODE (t) == OFFSET_TYPE) /* pmfs deal with this in d_t_p */
{
pp_maybe_space (cxx_pp);
if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE)
pp_cxx_left_paren (cxx_pp);
dump_type (TYPE_OFFSET_BASETYPE (t), flags);
pp_cxx_colon_colon (cxx_pp);
}
pp_cxx_star (cxx_pp);
pp_cxx_cv_qualifier_seq (cxx_pp, t);
pp_base (cxx_pp)->padding = pp_before;
break;
/* This can be reached without a pointer when dealing with
templates, e.g. std::is_function. */
case FUNCTION_TYPE:
dump_type_prefix (TREE_TYPE (t), flags);
break;
case METHOD_TYPE:
dump_type_prefix (TREE_TYPE (t), flags);
pp_maybe_space (cxx_pp);
pp_cxx_left_paren (cxx_pp);
dump_aggr_type (TYPE_METHOD_BASETYPE (t), flags);
pp_cxx_colon_colon (cxx_pp);
break;
case ARRAY_TYPE:
dump_type_prefix (TREE_TYPE (t), flags);
break;
case ENUMERAL_TYPE:
case IDENTIFIER_NODE:
case INTEGER_TYPE:
case BOOLEAN_TYPE:
case REAL_TYPE:
case RECORD_TYPE:
case TEMPLATE_TYPE_PARM:
case TEMPLATE_TEMPLATE_PARM:
case BOUND_TEMPLATE_TEMPLATE_PARM:
case TREE_LIST:
case TYPE_DECL:
case TREE_VEC:
case UNION_TYPE:
case LANG_TYPE:
case VOID_TYPE:
case TYPENAME_TYPE:
case COMPLEX_TYPE:
case VECTOR_TYPE:
case TYPEOF_TYPE:
case UNDERLYING_TYPE:
case DECLTYPE_TYPE:
case TYPE_PACK_EXPANSION:
case FIXED_POINT_TYPE:
case NULLPTR_TYPE:
dump_type (t, flags);
pp_base (cxx_pp)->padding = pp_before;
break;
default:
pp_unsupported_tree (cxx_pp, t);
/* fall through. */
case ERROR_MARK:
pp_string (cxx_pp, M_("<typeprefixerror>"));
break;
}
}
/* Dump the suffix of type T, under control of FLAGS. This is the part
which appears after the identifier (or function parms). */
static void
dump_type_suffix (tree t, int flags)
{
if (TYPE_PTRMEMFUNC_P (t))
t = TYPE_PTRMEMFUNC_FN_TYPE (t);
switch (TREE_CODE (t))
{
case POINTER_TYPE:
case REFERENCE_TYPE:
case OFFSET_TYPE:
if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE
|| TREE_CODE (TREE_TYPE (t)) == FUNCTION_TYPE)
pp_cxx_right_paren (cxx_pp);
dump_type_suffix (TREE_TYPE (t), flags);
break;
case FUNCTION_TYPE:
case METHOD_TYPE:
{
tree arg;
if (TREE_CODE (t) == METHOD_TYPE)
/* Can only be reached through a pointer. */
pp_cxx_right_paren (cxx_pp);
arg = TYPE_ARG_TYPES (t);
if (TREE_CODE (t) == METHOD_TYPE)
arg = TREE_CHAIN (arg);
/* Function pointers don't have default args. Not in standard C++,
anyway; they may in g++, but we'll just pretend otherwise. */
dump_parameters (arg, flags & ~TFF_FUNCTION_DEFAULT_ARGUMENTS);
if (TREE_CODE (t) == METHOD_TYPE)
pp_cxx_cv_qualifier_seq (cxx_pp, class_of_this_parm (t));
else
pp_cxx_cv_qualifier_seq (cxx_pp, t);
dump_exception_spec (TYPE_RAISES_EXCEPTIONS (t), flags);
dump_type_suffix (TREE_TYPE (t), flags);
break;
}
case ARRAY_TYPE:
pp_maybe_space (cxx_pp);
pp_cxx_left_bracket (cxx_pp);
if (TYPE_DOMAIN (t))
{
tree dtype = TYPE_DOMAIN (t);
tree max = TYPE_MAX_VALUE (dtype);
if (host_integerp (max, 0))
pp_wide_integer (cxx_pp, tree_low_cst (max, 0) + 1);
else if (TREE_CODE (max) == MINUS_EXPR)
dump_expr (TREE_OPERAND (max, 0),
flags & ~TFF_EXPR_IN_PARENS);
else
dump_expr (fold_build2_loc (input_location,
PLUS_EXPR, dtype, max,
build_int_cst (dtype, 1)),
flags & ~TFF_EXPR_IN_PARENS);
}
pp_cxx_right_bracket (cxx_pp);
dump_type_suffix (TREE_TYPE (t), flags);
break;
case ENUMERAL_TYPE:
case IDENTIFIER_NODE:
case INTEGER_TYPE:
case BOOLEAN_TYPE:
case REAL_TYPE:
case RECORD_TYPE:
case TEMPLATE_TYPE_PARM:
case TEMPLATE_TEMPLATE_PARM:
case BOUND_TEMPLATE_TEMPLATE_PARM:
case TREE_LIST:
case TYPE_DECL:
case TREE_VEC:
case UNION_TYPE:
case LANG_TYPE:
case VOID_TYPE:
case TYPENAME_TYPE:
case COMPLEX_TYPE:
case VECTOR_TYPE:
case TYPEOF_TYPE:
case UNDERLYING_TYPE:
case DECLTYPE_TYPE:
case TYPE_PACK_EXPANSION:
case FIXED_POINT_TYPE:
case NULLPTR_TYPE:
break;
default:
pp_unsupported_tree (cxx_pp, t);
case ERROR_MARK:
/* Don't mark it here, we should have already done in
dump_type_prefix. */
break;
}
}
static void
dump_global_iord (tree t)
{
const char *p = NULL;
if (DECL_GLOBAL_CTOR_P (t))
p = M_("(static initializers for %s)");
else if (DECL_GLOBAL_DTOR_P (t))
p = M_("(static destructors for %s)");
else
gcc_unreachable ();
pp_printf (pp_base (cxx_pp), p, input_filename);
}
static void
dump_simple_decl (tree t, tree type, int flags)
{
if (flags & TFF_DECL_SPECIFIERS)
{
if (TREE_CODE (t) == VAR_DECL
&& DECL_DECLARED_CONSTEXPR_P (t))
pp_cxx_ws_string (cxx_pp, "constexpr");
dump_type_prefix (type, flags & ~TFF_UNQUALIFIED_NAME);
pp_maybe_space (cxx_pp);
}
if (! (flags & TFF_UNQUALIFIED_NAME)
&& TREE_CODE (t) != PARM_DECL
&& (!DECL_INITIAL (t)
|| TREE_CODE (DECL_INITIAL (t)) != TEMPLATE_PARM_INDEX))
dump_scope (CP_DECL_CONTEXT (t), flags);
flags &= ~TFF_UNQUALIFIED_NAME;
if ((flags & TFF_DECL_SPECIFIERS)
&& DECL_TEMPLATE_PARM_P (t)
&& TEMPLATE_PARM_PARAMETER_PACK (DECL_INITIAL (t)))
pp_string (cxx_pp, "...");
if (DECL_NAME (t))
dump_decl (DECL_NAME (t), flags);
else
pp_string (cxx_pp, M_("<anonymous>"));
if (flags & TFF_DECL_SPECIFIERS)
dump_type_suffix (type, flags);
}
/* Dump a human readable string for the decl T under control of FLAGS. */
static void
dump_decl (tree t, int flags)
{
if (t == NULL_TREE)
return;
/* If doing Objective-C++, give Objective-C a chance to demangle
Objective-C method names. */
if (c_dialect_objc ())
{
const char *demangled = objc_maybe_printable_name (t, flags);
if (demangled)
{
pp_string (cxx_pp, demangled);
return;
}
}
switch (TREE_CODE (t))
{
case TYPE_DECL:
/* Don't say 'typedef class A' */
if (DECL_ARTIFICIAL (t) && !DECL_SELF_REFERENCE_P (t))
{
if ((flags & TFF_DECL_SPECIFIERS)
&& TREE_CODE (TREE_TYPE (t)) == TEMPLATE_TYPE_PARM)
{
/* Say `class T' not just `T'. */
pp_cxx_ws_string (cxx_pp, "class");
/* Emit the `...' for a parameter pack. */
if (TEMPLATE_TYPE_PARAMETER_PACK (TREE_TYPE (t)))
pp_cxx_ws_string (cxx_pp, "...");
}
dump_type (TREE_TYPE (t), flags);
break;
}
if (TYPE_DECL_ALIAS_P (t)
&& (flags & TFF_DECL_SPECIFIERS
|| flags & TFF_CLASS_KEY_OR_ENUM))
{
pp_cxx_ws_string (cxx_pp, "using");
dump_decl (DECL_NAME (t), flags);
pp_cxx_whitespace (cxx_pp);
pp_cxx_ws_string (cxx_pp, "=");
pp_cxx_whitespace (cxx_pp);
dump_type (DECL_ORIGINAL_TYPE (t), flags);
break;
}
if ((flags & TFF_DECL_SPECIFIERS)
&& !DECL_SELF_REFERENCE_P (t))
pp_cxx_ws_string (cxx_pp, "typedef");
dump_simple_decl (t, DECL_ORIGINAL_TYPE (t)
? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t),
flags);