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cp-tree.def (DECL_STMT): Make it smaller. 

* cp-tree.def (DECL_STMT): Make it smaller.
	* cp-tree.h (lang_decl_flags): Move saved_tree to ...
	(lang_decl): ... here.  Add next.
	(DECL_SAVED_TREE): Adjust accordingly.
	(DECL_IMPLICIT_TYPEDEF_P): New macro.
	(SET_DECL_IMPLICIT_TYPEDEF_P): Likewise.
	(DECL_STMT_DECL): Likewise.
	(create_implicit_typedef): New function.
	(maybe_push_decl): Likewise.
	(tsubst_default_argument): New function.
	(at_function_scope_p): Likewise.
	(add_decl_stmt): Likewise.
	(push_permanent_obstack): Likewise.
	* call.c (convert_default_arg): Use tsubst_default_argument.
	* class.c (add_method): Use push_permanent_obstack.
	(build_self_reference): Create a TEMPLATE_DECL for the
	self-reference, if necessary.
	* decl.c (pseudo_global_level_p): Only look at the current binding
	level.
	(push_binding): Use push_permanent_obstack.
	(create_implicit_typedef): New function.
	(pushtag): Use it.
	(duplicate_decls): Use push_permanent_obstack.
	(maybe_push_decl): New function.
	(start_decl): Use it.  Remove dead code.  Use add_decl_stmt.
	(start_decl_1): Remove dead code.
	(cp_finish_decl): Remove DECL_STMT handling here.  Don't use
	pseudo_global_level_p.
	(grokvardecl): Create DECL_LANG_SPECIFIC for a VAR_DECL in a
	template.
	(grokdeclarator): Likewise, for TYPE_DECLs.  Don't use
	pseudo_global_level_p.
	* decl2.c (grokfield): Call push_template_decl for a TYPE_DECL in
	a template.
	(get_sentry): Use push_permanent_obstack.
	* dump.c (dequeue_and_dump): Enable DECL_STMT.
	* except.c (call_eh_info): Use push_permanent_obstack.
	(build_eh_type_ref): Likewise.
	(do_pop_exception): Likewise.
	(expand_eh_spec): Likewise.
	(alloc_eh_object): Likewise.
	(expand_throw): Likewise.
	* init.c (build_java_class_ref): Likewise.
	* lex.c (get_time_identifier): Likewise.
	(free_lang_decl_chain): Correct type.
	(retrofit_lang_decl): Adjust accordingly.
	(build_lang_field_decl): Likewise.
	* lex.h (free_lang_decl_chain): Likewise.
	* parse.y (lang_extdef): Don't use pseudo_global_level_p.
	* parse.c: Regenerated.
	* pt.c (tsubst_default_arguments): New function.
	(retrieve_local_specialization): Likewise.
	(register_local_specialization): Likewise.
	(push_template_decl_real): Use DECL_IMPLICIT_TYPEDEF_P.  Just use
	pseudo_global_level_p to determine whether or not a template is
	primary.
	(lookup_template_class): Likewise.  Use create_implicit_typedef.
	(instantiate_class_template): Call tsubst_default_arguments for
	member functions, if appropriate.
	(tsubst_default_argument): New function.
	(tsubst_decl): Use it.  Change TYPE_DECL handling to match VAR_DECLs.
	* search.c (at_function_scope_p): New function.
	* semantics.c (finish_asm_stmt): Use push_permanent_obstack.
	(finish_label_stmt): Likewise.
	(add_decl_stmt): New function.
	(begin_class_definition): Likewise.
	(finish_typeof): Likewise.
	* tree.c (copy_template_template_parm): Likewise.
	(copy_to_permanent): Likewise.
	(push_permanent_obstack): Define.
	(mark_addressable): Use it.
	* typeck.c (mark_addressable): Likewise.

From-SVN: r28709
This commit is contained in:
Mark Mitchell 1999-08-14 09:23:49 +00:00 committed by Mark Mitchell
parent 0d4255d1f6
commit 9188c36364
22 changed files with 523 additions and 322 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
gcc/cp/ChangeLog
View File

@ -1,3 +1,78 @@
1999-08-13 Mark Mitchell <mark@codesourcery.com>
* cp-tree.def (DECL_STMT): Make it smaller.
* cp-tree.h (lang_decl_flags): Move saved_tree to ...
(lang_decl): ... here. Add next.
(DECL_SAVED_TREE): Adjust accordingly.
(DECL_IMPLICIT_TYPEDEF_P): New macro.
(SET_DECL_IMPLICIT_TYPEDEF_P): Likewise.
(DECL_STMT_DECL): Likewise.
(create_implicit_typedef): New function.
(maybe_push_decl): Likewise.
(tsubst_default_argument): New function.
(at_function_scope_p): Likewise.
(add_decl_stmt): Likewise.
(push_permanent_obstack): Likewise.
* call.c (convert_default_arg): Use tsubst_default_argument.
* class.c (add_method): Use push_permanent_obstack.
(build_self_reference): Create a TEMPLATE_DECL for the
self-reference, if necessary.
* decl.c (pseudo_global_level_p): Only look at the current binding
level.
(push_binding): Use push_permanent_obstack.
(create_implicit_typedef): New function.
(pushtag): Use it.
(duplicate_decls): Use push_permanent_obstack.
(maybe_push_decl): New function.
(start_decl): Use it. Remove dead code. Use add_decl_stmt.
(start_decl_1): Remove dead code.
(cp_finish_decl): Remove DECL_STMT handling here. Don't use
pseudo_global_level_p.
(grokvardecl): Create DECL_LANG_SPECIFIC for a VAR_DECL in a
template.
(grokdeclarator): Likewise, for TYPE_DECLs. Don't use
pseudo_global_level_p.
* decl2.c (grokfield): Call push_template_decl for a TYPE_DECL in
a template.
(get_sentry): Use push_permanent_obstack.
* dump.c (dequeue_and_dump): Enable DECL_STMT.
* except.c (call_eh_info): Use push_permanent_obstack.
(build_eh_type_ref): Likewise.
(do_pop_exception): Likewise.
(expand_eh_spec): Likewise.
(alloc_eh_object): Likewise.
(expand_throw): Likewise.
* init.c (build_java_class_ref): Likewise.
* lex.c (get_time_identifier): Likewise.
(free_lang_decl_chain): Correct type.
(retrofit_lang_decl): Adjust accordingly.
(build_lang_field_decl): Likewise.
* lex.h (free_lang_decl_chain): Likewise.
* parse.y (lang_extdef): Don't use pseudo_global_level_p.
* parse.c: Regenerated.
* pt.c (tsubst_default_arguments): New function.
(retrieve_local_specialization): Likewise.
(register_local_specialization): Likewise.
(push_template_decl_real): Use DECL_IMPLICIT_TYPEDEF_P. Just use
pseudo_global_level_p to determine whether or not a template is
primary.
(lookup_template_class): Likewise. Use create_implicit_typedef.
(instantiate_class_template): Call tsubst_default_arguments for
member functions, if appropriate.
(tsubst_default_argument): New function.
(tsubst_decl): Use it. Change TYPE_DECL handling to match VAR_DECLs.
* search.c (at_function_scope_p): New function.
* semantics.c (finish_asm_stmt): Use push_permanent_obstack.
(finish_label_stmt): Likewise.
(add_decl_stmt): New function.
(begin_class_definition): Likewise.
(finish_typeof): Likewise.
* tree.c (copy_template_template_parm): Likewise.
(copy_to_permanent): Likewise.
(push_permanent_obstack): Define.
(mark_addressable): Use it.
* typeck.c (mark_addressable): Likewise.
1999-08-13 Gavin Romig-Koch <gavin@cygnus.com>
cp-tree.h (init_cplus_unsave): New.

25
gcc/cp/call.c
View File

@ -3787,30 +3787,7 @@ convert_default_arg (type, arg, fn)
tree fn;
{
if (fn && DECL_TEMPLATE_INFO (fn))
{
/* This default argument came from a template. Instantiate the
default argument here, not in tsubst. In the case of
something like:
template <class T>
struct S {
static T t();
void f(T = t());
};
we must be careful to do name lookup in the scope of S<T>,
rather than in the current class. */
if (DECL_CLASS_SCOPE_P (fn))
pushclass (DECL_REAL_CONTEXT (fn), 2);
arg = tsubst_expr (arg, DECL_TI_ARGS (fn), /*complain=*/1, NULL_TREE);
if (DECL_CLASS_SCOPE_P (fn))
popclass ();
/* Make sure the default argument is reasonable. */
arg = check_default_argument (type, arg);
}
arg = tsubst_default_argument (fn, type, arg);
arg = break_out_target_exprs (arg);

6
gcc/cp/class.c
View File

@ -1154,8 +1154,7 @@ void
add_method (type, fields, method)
tree type, *fields, method;
{
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
/* Setting the DECL_CONTEXT and DECL_CLASS_CONTEXT here is probably
redundant. */
@ -5379,6 +5378,9 @@ build_self_reference ()
DECL_CLASS_CONTEXT (value) = current_class_type;
DECL_ARTIFICIAL (value) = 1;
if (processing_template_decl)
value = push_template_decl (value);
saved_cas = current_access_specifier;
current_access_specifier = access_public_node;
finish_member_declaration (value);

2
gcc/cp/cp-tree.def
View File

@ -217,7 +217,7 @@ DEFTREECODE (TYPEID_EXPR, "typeid_expr", 'e', 1)
DEFTREECODE (EXPR_STMT, "expr_stmt", 'e', 1)
DEFTREECODE (COMPOUND_STMT, "compound_stmt", 'e', 1)
DEFTREECODE (DECL_STMT, "decl_stmt", 'e', 3)
DEFTREECODE (DECL_STMT, "decl_stmt", 'e', 1)
DEFTREECODE (IF_STMT, "if_stmt", 'e', 3)
DEFTREECODE (FOR_STMT, "for_stmt", 'e', 4)
DEFTREECODE (WHILE_STMT, "while_stmt", 'e', 2)

35
gcc/cp/cp-tree.h
View File

@ -77,6 +77,7 @@ Boston, MA 02111-1307, USA. */
1: C_TYPEDEF_EXPLICITLY_SIGNED (in TYPE_DECL).
DECL_TEMPLATE_INSTANTIATED (in a VAR_DECL or a FUNCTION_DECL)
2: DECL_THIS_EXTERN (in VAR_DECL or FUNCTION_DECL).
DECL_IMPLICIT_TYPEDEF_P (in a TYPE_DECL)
3: DECL_IN_AGGR_P.
4: DECL_MAYBE_TEMPLATE.
5: DECL_INTERFACE_KNOWN.
@ -1192,11 +1193,8 @@ struct lang_decl_flags
tree access;
tree context;
/* In a template FUNCTION_DECL, this is DECL_SAVED_TREE. */
tree saved_tree;
union {
/* In a FUNCTION_DECL, this is DECL_TEMPLATE_INFO. */
/* In a FUNCTION_DECL or a VAR_DECL, this is DECL_TEMPLATE_INFO. */
tree template_info;
/* In a NAMESPACE_DECL, this is NAMESPACE_LEVEL. */
@ -1210,10 +1208,17 @@ struct lang_decl
tree main_decl_variant;
tree befriending_classes;
/* In a FUNCTION_DECL, this is DECL_SAVED_TREE. */
tree saved_tree;
union
{
tree sorted_fields;
struct pending_inline *pending_inline_info;
/* The lang_decls on the free_lang_decl_chain are chained together
through this pointer. */
struct lang_decl *next;
} u;
};
@ -1502,7 +1507,7 @@ struct lang_decl
/* In a template FUNCTION_DECL, the tree structure that will be
substituted into to obtain instantiations. */
#define DECL_SAVED_TREE(NODE) \
(DECL_LANG_SPECIFIC ((NODE))->decl_flags.saved_tree)
(DECL_LANG_SPECIFIC ((NODE))->saved_tree)
#define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE)
#define NEW_EXPR_USE_GLOBAL(NODE) TREE_LANG_FLAG_0 (NODE)
@ -1984,6 +1989,18 @@ extern int flag_new_for_scope;
#define DECL_DECLARES_TYPE_P(NODE) \
(TREE_CODE (NODE) == TYPE_DECL || DECL_CLASS_TEMPLATE_P (NODE))
/* Nonzero if NODE is the typedef implicitly generated for a type when
the type is declared. (In C++, `struct S {};' is roughly equivalent
to `struct S {}; typedef struct S S;' in C. This macro will hold
for the typedef indicated in this example. Note that in C++, there
is a second implicit typedef for each class, in the scope of `S'
itself, so that you can `S::S'. This macro does *not* hold for
those typedefs. */
#define DECL_IMPLICIT_TYPEDEF_P(NODE) \
(TREE_CODE ((NODE)) == TYPE_DECL && DECL_LANG_FLAG_2 ((NODE)))
#define SET_DECL_IMPLICIT_TYPEDEF_P(NODE) \
(DECL_LANG_FLAG_2 ((NODE)) = 1)
/* A `primary' template is one that has its own template header. A
member function of a class template is a template, but not primary.
A member template is primary. Friend templates are primary, too. */
@ -2120,6 +2137,7 @@ extern int flag_new_for_scope;
#define ASM_OUTPUTS(NODE) TREE_OPERAND (NODE, 2)
#define ASM_INPUTS(NODE) TREE_OPERAND (NODE, 3)
#define ASM_CLOBBERS(NODE) TREE_OPERAND (NODE, 4)
#define DECL_STMT_DECL(NODE) TREE_OPERAND (NODE, 0)
/* Nonzero for an ASM_STMT if the assembly statement is volatile. */
#define ASM_VOLATILE_P(NODE) \
@ -2936,6 +2954,8 @@ extern int walk_namespaces PROTO((walk_namespaces_fn,
void *));
extern int wrapup_globals_for_namespace PROTO((tree, void *));
extern tree cp_namespace_decls PROTO((tree));
extern tree create_implicit_typedef PROTO((tree, tree));
extern tree maybe_push_decl PROTO((tree));
/* in decl2.c */
extern int check_java_method PROTO((tree));
@ -3191,7 +3211,6 @@ extern void do_type_instantiation PROTO((tree, tree));
extern tree instantiate_decl PROTO((tree));
extern tree do_poplevel PROTO((void));
extern tree get_bindings PROTO((tree, tree, tree));
/* CONT ... */
extern void add_tree PROTO((tree));
extern void begin_tree PROTO((void));
extern void end_tree PROTO((void));
@ -3210,6 +3229,7 @@ extern void maybe_check_template_type PROTO((tree));
extern tree most_specialized_instantiation PROTO((tree, tree));
extern void print_candidates PROTO((tree));
extern int instantiate_pending_templates PROTO((void));
extern tree tsubst_default_argument PROTO((tree, tree, tree));
extern int processing_specialization;
extern int processing_explicit_instantiation;
@ -3257,6 +3277,7 @@ extern void print_search_statistics PROTO((void));
extern void init_search_processing PROTO((void));
extern void reinit_search_statistics PROTO((void));
extern tree current_scope PROTO((void));
extern int at_function_scope_p PROTO((void));
extern tree lookup_conversions PROTO((tree));
extern tree binfo_for_vtable PROTO((tree));
extern int binfo_from_vbase PROTO((tree));
@ -3342,6 +3363,7 @@ extern tree finish_base_specifier PROTO((tree, tree));
extern void finish_member_declaration PROTO((tree));
extern void check_multiple_declarators PROTO((void));
extern tree finish_typeof PROTO((tree));
extern void add_decl_stmt PROTO((tree));
/* in spew.c */
extern void init_spew PROTO((void));
@ -3420,6 +3442,7 @@ extern tree mapcar PROTO((tree, tree (*) (tree)));
extern tree no_linkage_check PROTO((tree));
extern void debug_binfo PROTO((tree));
extern void push_expression_obstack PROTO((void));
extern void push_permanent_obstack PROTO((void));
extern tree build_dummy_object PROTO((tree));
extern tree maybe_dummy_object PROTO((tree, tree *));
extern int is_dummy_object PROTO((tree));

266
gcc/cp/decl.c
View File

@ -923,9 +923,7 @@ declare_namespace_level ()
int
pseudo_global_level_p ()
{
struct binding_level *b = innermost_nonclass_level ();
return b->pseudo_global;
return current_binding_level->pseudo_global;
}
void
@ -1018,8 +1016,7 @@ push_binding (id, decl, level)
if (!free_binding_nodes)
{
/* There are no free nodes, so we must build one here. */
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
binding = make_node (CPLUS_BINDING);
pop_obstacks ();
}
@ -2761,6 +2758,29 @@ maybe_process_template_type_declaration (type, globalize, b)
return decl;
}
/* In C++, you don't have to write `struct S' to refer to `S'; you
can just use `S'. We accomplish this by creating a TYPE_DECL as
if the user had written `typedef struct S S'. Create and return
the TYPE_DECL for TYPE. */
tree
create_implicit_typedef (name, type)
tree name;
tree type;
{
tree decl;
decl = build_decl (TYPE_DECL, name, type);
SET_DECL_ARTIFICIAL (decl);
/* There are other implicit type declarations, like the one *within*
a class that allows you to write `S::S'. We must distinguish
amongst these. */
SET_DECL_IMPLICIT_TYPEDEF_P (decl);
TYPE_NAME (type) = decl;
return decl;
}
/* Push a tag name NAME for struct/class/union/enum type TYPE.
Normally put it into the inner-most non-tag-transparent scope,
but if GLOBALIZE is true, put it in the inner-most non-class scope.
@ -2790,9 +2810,8 @@ pushtag (name, type, globalize)
{
register tree d = NULL_TREE;
int in_class = 0;
tree context;
tree context = TYPE_CONTEXT (type);
context = type ? TYPE_CONTEXT (type) : NULL_TREE;
if (! context)
{
tree cs = current_scope ();
@ -2813,16 +2832,14 @@ pushtag (name, type, globalize)
|| b->parm_flag == 2)
in_class = 1;
d = build_decl (TYPE_DECL, name, type);
if (current_lang_name == lang_name_java)
TYPE_FOR_JAVA (type) = 1;
SET_DECL_ARTIFICIAL (d);
d = create_implicit_typedef (name, type);
DECL_CONTEXT (d) = FROB_CONTEXT (context);
if (! in_class)
set_identifier_type_value_with_scope (name, type, b);
TYPE_NAME (type) = d;
DECL_CONTEXT (d) = FROB_CONTEXT (context);
d = maybe_process_template_type_declaration (type,
globalize, b);
@ -3449,10 +3466,7 @@ duplicate_decls (newdecl, olddecl)
if (oldtype)
push_obstacks (TYPE_OBSTACK (oldtype), TYPE_OBSTACK (oldtype));
else
{
push_obstacks_nochange ();
end_temporary_allocation ();
}
push_permanent_obstack ();
/* Merge the data types specified in the two decls. */
newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
@ -3733,14 +3747,13 @@ duplicate_decls (newdecl, olddecl)
{
if (DECL_MAIN_VARIANT (olddecl) == olddecl)
{
/* Save these lang_decls that would otherwise be lost. */
extern tree free_lang_decl_chain;
tree free_lang_decl = (tree) ol;
struct lang_decl *free_lang_decl = ol;
/* Save these lang_decls that would otherwise be lost. */
if (DECL_LANG_SPECIFIC (olddecl) == ol)
abort ();
TREE_CHAIN (free_lang_decl) = free_lang_decl_chain;
free_lang_decl->u.next = free_lang_decl_chain;
free_lang_decl_chain = free_lang_decl;
}
else
@ -4310,6 +4323,35 @@ pushdecl_class_level (x)
}
}
/* Enter DECL into the symbol table, if that's appropriate. Returns
DECL, or a modified version thereof. */
tree
maybe_push_decl (decl)
tree decl;
{
tree type = TREE_TYPE (decl);
/* Add this decl to the current binding level, but not if it comes
from another scope, e.g. a static member variable. TEM may equal
DECL or it may be a previous decl of the same name. */
if ((TREE_CODE (decl) != PARM_DECL
&& DECL_CONTEXT (decl) != NULL_TREE
/* Definitions of namespace members outside their namespace are
possible. */
&& TREE_CODE (DECL_CONTEXT (decl)) != NAMESPACE_DECL)
|| (TREE_CODE (decl) == TEMPLATE_DECL && !namespace_bindings_p ())
|| TREE_CODE (type) == UNKNOWN_TYPE
/* The declaration of template specializations does not affect
the functions available for overload resolution, so we do not
call pushdecl. */
|| (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_TEMPLATE_SPECIALIZATION (decl)))
return decl;
else
return pushdecl (decl);
}
#if 0
/* This function is used to push the mangled decls for nested types into
the appropriate scope. Previously pushdecl_top_level was used, but that
@ -6987,34 +7029,22 @@ start_decl (declarator, declspecs, initialized, attributes, prefix_attributes)
decl);
}
/* Add this decl to the current binding level, but not if it
comes from another scope, e.g. a static member variable.
TEM may equal DECL or it may be a previous decl of the same name. */
if ((TREE_CODE (decl) != PARM_DECL && DECL_CONTEXT (decl) != NULL_TREE
/* Definitions of namespace members outside their namespace are
possible. */
&& TREE_CODE (DECL_CONTEXT (decl)) != NAMESPACE_DECL)
|| (TREE_CODE (decl) == TEMPLATE_DECL && !namespace_bindings_p ())
|| TREE_CODE (type) == LANG_TYPE
/* The declaration of template specializations does not affect
the functions available for overload resolution, so we do not
call pushdecl. */
|| (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_TEMPLATE_SPECIALIZATION (decl)))
tem = decl;
else
tem = pushdecl (decl);
/* Enter this declaration into the symbol table. */
tem = maybe_push_decl (decl);
if (processing_template_decl)
{
if (! current_function_decl)
tem = push_template_decl (tem);
else
DECL_VINDEX (tem)
= build_min_nt (DECL_STMT, copy_to_permanent (declarator),
copy_to_permanent (declspecs),
NULL_TREE);
if (at_function_scope_p ())
push_permanent_obstack ();
tem = push_template_decl (tem);
/* In a a local scope, add a representation of this declaration
to the statement tree. */
if (at_function_scope_p ())
{
add_decl_stmt (decl);
pop_obstacks ();
}
}
@ -7033,32 +7063,6 @@ start_decl (declarator, declspecs, initialized, attributes, prefix_attributes)
/* Corresponding pop_obstacks is done in `cp_finish_decl'. */
push_obstacks_nochange ();
#if 0
/* We have no way of knowing whether the initializer will need to be
evaluated at run-time or not until we've parsed it, so let's just put
it in the permanent obstack. (jason) */
if (init_written
&& ! (TREE_CODE (tem) == PARM_DECL
|| (TREE_READONLY (tem)
&& (TREE_CODE (tem) == VAR_DECL
|| TREE_CODE (tem) == FIELD_DECL))))
{
/* When parsing and digesting the initializer,
use temporary storage. Do this even if we will ignore the value. */
if (toplevel_bindings_p () && debug_temp_inits)
{
if (processing_template_decl
|| TYPE_NEEDS_CONSTRUCTING (type)
|| TREE_CODE (type) == REFERENCE_TYPE)
/* In this case, the initializer must lay down in permanent
storage, since it will be saved until `finish_file' is run. */
;
else
temporary_allocation ();
}
}
#endif
return tem;
}
@ -7130,23 +7134,6 @@ start_decl_1 (decl)
}
}
#if 0
/* We don't do this yet for GNU C++. */
/* For a local variable, define the RTL now. */
if (! toplevel_bindings_p ()
/* But not if this is a duplicate decl
and we preserved the rtl from the previous one
(which may or may not happen). */
&& DECL_RTL (tem) == NULL_RTX)
{
if (TYPE_SIZE (TREE_TYPE (tem)) != NULL_TREE)
expand_decl (tem);
else if (TREE_CODE (TREE_TYPE (tem)) == ARRAY_TYPE
&& DECL_INITIAL (tem) != NULL_TREE)
expand_decl (tem);
}
#endif
if (! initialized)
DECL_INITIAL (decl) = NULL_TREE;
}
@ -7380,22 +7367,7 @@ cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
if (processing_template_decl)
{
if (init && DECL_INITIAL (decl))
DECL_INITIAL (decl) = init;
if (current_function_decl && ! DECL_ARTIFICIAL (decl))
{
tree stmt = DECL_VINDEX (decl);
/* If the decl is declaring a member of a local class (in a
template function), the DECL_VINDEX will either be NULL,
or it will be an actual virtual function index, not a
DECL_STMT. */
if (stmt != NULL_TREE && TREE_CODE (stmt) == DECL_STMT)
{
DECL_VINDEX (decl) = NULL_TREE;
TREE_OPERAND (stmt, 2) = copy_to_permanent (init);
add_tree (stmt);
}
}
DECL_INITIAL (decl) = copy_to_permanent (init);
goto finish_end0;
}
@ -7466,9 +7438,7 @@ cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
else if (TREE_CODE (type) == REFERENCE_TYPE)
{
if (TREE_STATIC (decl))
make_decl_rtl (decl, NULL_PTR,
toplevel_bindings_p ()
|| pseudo_global_level_p ());
make_decl_rtl (decl, NULL_PTR, toplevel_bindings_p ());
grok_reference_init (decl, type, init);
init = NULL_TREE;
}
@ -7678,7 +7648,7 @@ cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
|| TREE_CODE (decl) == RESULT_DECL)
{
/* ??? FIXME: What about nested classes? */
int toplev = toplevel_bindings_p () || pseudo_global_level_p ();
int toplev = toplevel_bindings_p ();
int was_temp
= (TREE_STATIC (decl) && TYPE_NEEDS_DESTRUCTOR (type)
&& allocation_temporary_p ());
@ -8647,7 +8617,17 @@ grokvardecl (type, declarator, specbits_in, initialized, constp, in_namespace)
else
context = NULL_TREE;
decl = build_decl (VAR_DECL, declarator, complete_type (type));
if (processing_template_decl)
{
/* If we're in a template, we need DECL_LANG_SPECIFIC so that
we can call push_template_decl. */
push_permanent_obstack ();
decl = build_lang_field_decl (VAR_DECL, declarator,
complete_type (type));
pop_obstacks ();
}
else
decl = build_decl (VAR_DECL, declarator, complete_type (type));
if (context)
set_decl_namespace (decl, context, 0);
@ -9259,8 +9239,7 @@ grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
We also want to avoid calling this a PARM if it is in a namespace. */
if (decl_context == NORMAL && ! namespace_bindings_p ()
&& ! pseudo_global_level_p ())
if (decl_context == NORMAL && !toplevel_bindings_p ())
{
struct binding_level *b = current_binding_level;
current_binding_level = b->level_chain;
@ -10568,15 +10547,18 @@ grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
since it might be used as a template parameter. */
if (type != error_mark_node)
push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
decl = build_decl (TYPE_DECL, declarator, type);
if (processing_template_decl)
decl = build_lang_field_decl (TYPE_DECL, declarator, type);
else
decl = build_decl (TYPE_DECL, declarator, type);
if (type != error_mark_node)
pop_obstacks ();
}
/* If the user declares "struct {...} foo" then `foo' will have
an anonymous name. Fill that name in now. Nothing can
refer to it, so nothing needs know about the name change.
The TYPE_NAME field was filled in by build_struct_xref. */
/* If the user declares "typedef struct {...} foo" then the
struct will have an anonymous name. Fill that name in now.
Nothing can refer to it, so nothing needs know about the name
change. */
if (type != error_mark_node
&& TYPE_NAME (type)
&& TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
@ -11039,7 +11021,7 @@ grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
{
/* C++ allows static class members.
All other work for this is done by grokfield.
This VAR_DCL is built by build_lang_field_decl.
This VAR_DECL is built by build_lang_field_decl.
All other VAR_DECLs are built by build_decl. */
decl = build_lang_field_decl (VAR_DECL, declarator, type);
TREE_STATIC (decl) = 1;
@ -12913,6 +12895,31 @@ start_function (declspecs, declarator, attrs, pre_parsed_p)
if (pre_parsed_p == 2)
maybe_begin_member_template_processing (decl1);
/* Effective C++ rule 15. See also c_expand_return. */
if (warn_ecpp
&& DECL_NAME (decl1) == ansi_opname[(int) MODIFY_EXPR]
&& TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE)
cp_warning ("`operator=' should return a reference to `*this'");
/* Make the init_value nonzero so pushdecl knows this is not tentative.
error_mark_node is replaced below (in poplevel) with the BLOCK. */
DECL_INITIAL (decl1) = error_mark_node;
#ifdef SET_DEFAULT_DECL_ATTRIBUTES
SET_DEFAULT_DECL_ATTRIBUTES (decl1, attrs);
#endif
/* This function exists in static storage.
(This does not mean `static' in the C sense!) */
TREE_STATIC (decl1) = 1;
/* We must call push_template_decl after current_class_type is set
up. (If we are processing inline definitions after exiting a
class scope, current_class_type will be NULL_TREE until set above
by push_nested_class.) */
if (processing_template_decl)
decl1 = push_template_decl (decl1);
/* We are now in the scope of the function being defined. */
current_function_decl = decl1;
@ -12955,31 +12962,6 @@ start_function (declspecs, declarator, attrs, pre_parsed_p)
abstract_virtuals_error (decl1, TREE_TYPE (fntype));
}
/* Effective C++ rule 15. See also c_expand_return. */
if (warn_ecpp
&& DECL_NAME (decl1) == ansi_opname[(int) MODIFY_EXPR]
&& TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE)
cp_warning ("`operator=' should return a reference to `*this'");
/* Make the init_value nonzero so pushdecl knows this is not tentative.
error_mark_node is replaced below (in poplevel) with the BLOCK. */
DECL_INITIAL (decl1) = error_mark_node;
#ifdef SET_DEFAULT_DECL_ATTRIBUTES
SET_DEFAULT_DECL_ATTRIBUTES (decl1, attrs);
#endif
/* This function exists in static storage.
(This does not mean `static' in the C sense!) */
TREE_STATIC (decl1) = 1;
/* We must call push_template_decl after current_class_type is set
up. (If we are processing inline definitions after exiting a
class scope, current_class_type will be NULL_TREE until set above
by push_nested_class.) */
if (processing_template_decl)
decl1 = push_template_decl (decl1);
/* Record the decl so that the function name is defined.
If we already have a decl for this name, and it is a FUNCTION_DECL,
use the old decl. */

6
gcc/cp/decl2.c
View File

@ -1644,6 +1644,9 @@ grokfield (declarator, declspecs, init, asmspec_tree, attrlist)
DECL_ASSEMBLER_NAME (value) =
get_identifier (build_overload_name (TREE_TYPE (value), 1, 1));
if (processing_template_decl)
value = push_template_decl (value);
return value;
}
@ -2823,8 +2826,7 @@ get_sentry (base)
tree sentry = IDENTIFIER_GLOBAL_VALUE (sname);
if (! sentry)
{
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
sentry = build_decl (VAR_DECL, sname, integer_type_node);
TREE_PUBLIC (sentry) = 1;
DECL_ARTIFICIAL (sentry) = 1;

4
gcc/cp/dump.c
View File

@ -662,12 +662,8 @@ dequeue_and_dump (di)
case DECL_STMT:
dump_stmt (di, t);
#if 0
/* We do not yet have DECL_STMT_DECL; there are declarators and
such hanging about in DECL_STMTs. */
if (dump_children_p)
dump_child ("decl", DECL_STMT_DECL (t));
#endif
break;
case DO_STMT:

24
gcc/cp/except.c
View File

@ -240,8 +240,7 @@ call_eh_info ()
/* Declare cp_eh_info * __start_cp_handler (void),
as defined in exception.cc. */
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
/* struct cp_eh_info. This must match exception.cc. Note that this
type is not pushed anywhere. */
@ -422,8 +421,7 @@ build_eh_type_type_ref (type)
/* Peel off cv qualifiers. */
type = TYPE_MAIN_VARIANT (type);
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
if (flag_rtti)
{
@ -502,8 +500,7 @@ do_pop_exception ()
{
/* Declare void __cp_pop_exception (void *),
as defined in exception.cc. */
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
fn = build_lang_decl
(FUNCTION_DECL, fn,
build_function_type (void_type_node, tree_cons
@ -773,8 +770,7 @@ expand_end_eh_spec (raises)
fn = IDENTIFIER_GLOBAL_VALUE (fn);
else
{
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
tmp = tree_cons
(NULL_TREE, integer_type_node, tree_cons
@ -920,8 +916,7 @@ alloc_eh_object (type)
{
/* Declare __eh_alloc (size_t), as defined in exception.cc. */
tree tmp;
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
tmp = tree_cons (NULL_TREE, sizetype, void_list_node);
fn = build_lang_decl (FUNCTION_DECL, fn,
build_function_type (ptr_type_node, tmp));
@ -973,8 +968,7 @@ expand_throw (exp)
the internal type of a destructor. */
if (cleanup_type == NULL_TREE)
{
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
cleanup_type = build_pointer_type
(build_function_type
(void_type_node, tree_cons
@ -1074,8 +1068,7 @@ expand_throw (exp)
/* Declare __cp_push_exception (void*, void*, void (*)(void*, int)),
as defined in exception.cc. */
tree tmp;
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
tmp = tree_cons
(NULL_TREE, ptr_type_node, tree_cons
(NULL_TREE, ptr_type_node, tree_cons
@ -1108,8 +1101,7 @@ expand_throw (exp)
{
/* Declare void __uncatch_exception (void)
as defined in exception.cc. */
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
fn = build_lang_decl (FUNCTION_DECL, fn,
build_function_type (void_type_node,
void_list_node));

3
gcc/cp/init.c
View File

@ -2141,8 +2141,7 @@ build_java_class_ref (type)
class_decl = IDENTIFIER_GLOBAL_VALUE (name);
if (class_decl == NULL_TREE)
{
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
class_decl = build_decl (VAR_DECL, name, TREE_TYPE (jclass_node));
TREE_STATIC (class_decl) = 1;
DECL_EXTERNAL (class_decl) = 1;

60
gcc/cp/lex.c
View File

@ -330,8 +330,7 @@ get_time_identifier (name)
time_identifier = get_identifier (buf);
if (TIME_IDENTIFIER_TIME (time_identifier) == NULL_TREE)
{
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
TIME_IDENTIFIER_TIME (time_identifier) = build_int_2 (0, 0);
TIME_IDENTIFIER_FILEINFO (time_identifier)
= build_int_2 (0, 1);
@ -4716,8 +4715,8 @@ extern int tree_node_sizes[];
#endif
/* Place to save freed lang_decls which were allocated on the
permanent_obstack. @@ Not currently used. */
tree free_lang_decl_chain;
permanent_obstack. */
struct lang_decl *free_lang_decl_chain;
tree
build_lang_decl (code, name, type)
@ -4738,8 +4737,7 @@ retrofit_lang_decl (t)
tree t;
{
struct obstack *obstack = current_obstack;
register int i = sizeof (struct lang_decl) / sizeof (int);
register int *pi;
struct lang_decl *ld;
if (! TREE_PERMANENT (t))
obstack = saveable_obstack;
@ -4749,20 +4747,18 @@ retrofit_lang_decl (t)
if (free_lang_decl_chain && obstack == &permanent_obstack)
{
pi = (int *)free_lang_decl_chain;
free_lang_decl_chain = TREE_CHAIN (free_lang_decl_chain);
ld = free_lang_decl_chain;
free_lang_decl_chain = free_lang_decl_chain->u.next;
}
else
pi = (int *) obstack_alloc (obstack, sizeof (struct lang_decl));
ld = ((struct lang_decl *)
obstack_alloc (obstack, sizeof (struct lang_decl)));
while (i > 0)
pi[--i] = 0;
bzero (ld, sizeof (struct lang_decl));
DECL_LANG_SPECIFIC (t) = (struct lang_decl *) pi;
LANG_DECL_PERMANENT ((struct lang_decl *) pi)
= obstack == &permanent_obstack;
my_friendly_assert (LANG_DECL_PERMANENT ((struct lang_decl *) pi)
== TREE_PERMANENT (t), 234);
DECL_LANG_SPECIFIC (t) = ld;
LANG_DECL_PERMANENT (ld) = obstack == &permanent_obstack;
my_friendly_assert (LANG_DECL_PERMANENT (ld) == TREE_PERMANENT (t), 234);
DECL_MAIN_VARIANT (t) = t;
if (current_lang_name == lang_name_cplusplus)
DECL_LANGUAGE (t) = lang_cplusplus;
@ -4772,21 +4768,15 @@ retrofit_lang_decl (t)
DECL_LANGUAGE (t) = lang_java;
else my_friendly_abort (64);
#if 0 /* not yet, should get fixed properly later */
if (code == TYPE_DECL)
{
tree id;
id = get_identifier (build_overload_name (type, 1, 1));
DECL_ASSEMBLER_NAME (t) = id;
}
#endif
#ifdef GATHER_STATISTICS
tree_node_counts[(int)lang_decl] += 1;
tree_node_sizes[(int)lang_decl] += sizeof (struct lang_decl);
#endif
}
/* Like build_decl, except that a new lang_decl_flags structure is
placed in DECL_LANG_SPECIFIC. */
tree
build_lang_field_decl (code, name, type)
enum tree_code code;
@ -4796,28 +4786,16 @@ build_lang_field_decl (code, name, type)
extern struct obstack *current_obstack, *saveable_obstack;
register tree t = build_decl (code, name, type);
struct obstack *obstack = current_obstack;
register int i = sizeof (struct lang_decl_flags) / sizeof (int);
register int *pi;
#if 0 /* not yet, should get fixed properly later */
if (code == TYPE_DECL)
{
tree id;
id = get_identifier (build_overload_name (type, 1, 1));
DECL_ASSEMBLER_NAME (t) = id;
}
#endif
if (! TREE_PERMANENT (t))
obstack = saveable_obstack;
else
my_friendly_assert (obstack == &permanent_obstack, 235);
pi = (int *) obstack_alloc (obstack, sizeof (struct lang_decl_flags));
while (i > 0)
pi[--i] = 0;
DECL_LANG_SPECIFIC (t) = (struct lang_decl *) pi;
DECL_LANG_SPECIFIC (t)
= ((struct lang_decl *)
obstack_alloc (obstack, sizeof (struct lang_decl_flags)));
bzero (DECL_LANG_SPECIFIC (t), sizeof (struct lang_decl_flags));
return t;
}

2
gcc/cp/lex.h
View File

@ -131,3 +131,5 @@ extern tree got_object;
extern int pending_lang_change;
extern int yylex PROTO((void));
extern struct lang_decl *free_lang_decl_chain;

2
gcc/cp/parse.c
View File

@ -4444,7 +4444,7 @@ case 12:
break;}
case 13:
#line 386 "parse.y"
{ if (! toplevel_bindings_p () && ! pseudo_global_level_p())
{ if (! toplevel_bindings_p ())
pop_everything (); ;
break;}
case 14:

2
gcc/cp/parse.y
View File

@ -383,7 +383,7 @@ asm_keyword:
lang_extdef:
{ if (pending_lang_change) do_pending_lang_change(); }
extdef
{ if (! toplevel_bindings_p () && ! pseudo_global_level_p())
{ if (! toplevel_bindings_p ())
pop_everything (); }
;

228
gcc/cp/pt.c
View File

@ -123,7 +123,9 @@ static tree build_template_parm_index PROTO((int, int, int, tree, tree));
static int inline_needs_template_parms PROTO((tree));
static void push_inline_template_parms_recursive PROTO((tree, int));
static tree retrieve_specialization PROTO((tree, tree));
static tree retrieve_local_specialization PROTO((tree, tree));
static tree register_specialization PROTO((tree, tree, tree));
static tree register_local_specialization PROTO((tree, tree, tree));
static int unregister_specialization PROTO((tree, tree));
static tree reduce_template_parm_level PROTO((tree, tree, int));
static tree build_template_decl PROTO((tree, tree));
@ -160,6 +162,7 @@ static int coerce_template_template_parms PROTO((tree, tree, int,
static tree determine_specialization PROTO((tree, tree, tree *, int));
static int template_args_equal PROTO((tree, tree));
static void print_template_context PROTO((int));
static void tsubst_default_arguments PROTO((tree));
/* We use TREE_VECs to hold template arguments. If there is only one
level of template arguments, then the TREE_VEC contains the
@ -756,6 +759,18 @@ retrieve_specialization (tmpl, args)
return NULL_TREE;
}
/* Like retrieve_speciailization, but for local declarations. FN is
the function in which we are looking for an instantiation. */
static tree
retrieve_local_specialization (tmpl, fn)
tree tmpl;
tree fn;
{
tree s = purpose_member (fn, DECL_TEMPLATE_SPECIALIZATIONS (tmpl));
return s ? TREE_VALUE (s) : NULL_TREE;
}
/* Returns non-zero iff DECL is a specialization of TMPL. */
int
@ -911,6 +926,22 @@ unregister_specialization (spec, tmpl)
return 0;
}
/* Like register_specialization, but for local declarations. FN is
the function in which we are registering SPEC, an instantiation of
TMPL. */
static tree
register_local_specialization (spec, tmpl, fn)
tree spec;
tree tmpl;
tree fn;
{
DECL_TEMPLATE_SPECIALIZATIONS (tmpl)
= perm_tree_cons (fn, spec, DECL_TEMPLATE_SPECIALIZATIONS (tmpl));
return spec;
}
/* Print the list of candidate FNS in an error message. */
void
@ -2350,7 +2381,7 @@ push_template_decl_real (decl, is_friend)
int is_partial;
/* See if this is a partial specialization. */
is_partial = (TREE_CODE (decl) == TYPE_DECL && DECL_ARTIFICIAL (decl)
is_partial = (DECL_IMPLICIT_TYPEDEF_P (decl)
&& TREE_CODE (TREE_TYPE (decl)) != ENUMERAL_TYPE
&& CLASSTYPE_TEMPLATE_SPECIALIZATION (TREE_TYPE (decl)));
@ -2368,7 +2399,7 @@ push_template_decl_real (decl, is_friend)
else
/* Otherwise, if we're currently definining some class, the DECL
is assumed to be a member of the class. */
ctx = current_class_type;
ctx = current_scope ();
if (ctx && TREE_CODE (ctx) == NAMESPACE_DECL)
ctx = NULL_TREE;
@ -2376,22 +2407,8 @@ push_template_decl_real (decl, is_friend)
if (!DECL_CONTEXT (decl))
DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
/* For determining whether this is a primary template or not, we're really
interested in the lexical context, not the true context. */
if (is_friend)
info = current_class_type;
else
info = ctx;
/* See if this is a primary template. */
if (info && TREE_CODE (info) == FUNCTION_DECL)
primary = 0;
/* Note that template_class_depth returns 0 if given NULL_TREE, so
this next line works even when we are at global scope. */
else if (processing_template_decl > template_class_depth (info))
primary = 1;
else
primary = 0;
primary = pseudo_global_level_p ();
if (primary)
{
@ -2546,7 +2563,7 @@ push_template_decl_real (decl, is_friend)
info = perm_tree_cons (tmpl, args, NULL_TREE);
if (TREE_CODE (decl) == TYPE_DECL && DECL_ARTIFICIAL (decl))
if (DECL_IMPLICIT_TYPEDEF_P (decl))
{
SET_TYPE_TEMPLATE_INFO (TREE_TYPE (tmpl), info);
if ((!ctx || TREE_CODE (ctx) != FUNCTION_DECL)
@ -3932,16 +3949,13 @@ lookup_template_class (d1, arglist, in_decl, context, entering_scope)
{
TYPE_CONTEXT (t) = FROB_CONTEXT (context);
/* Create a stub TYPE_DECL for it. */
type_decl = build_decl (TYPE_DECL, DECL_NAME (template), t);
SET_DECL_ARTIFICIAL (type_decl);
type_decl = create_implicit_typedef (DECL_NAME (template), t);
DECL_CONTEXT (type_decl) = TYPE_CONTEXT (t);
TYPE_STUB_DECL (t) = type_decl;
DECL_SOURCE_FILE (type_decl)
= DECL_SOURCE_FILE (TYPE_STUB_DECL (template_type));
DECL_SOURCE_LINE (type_decl)
= DECL_SOURCE_LINE (TYPE_STUB_DECL (template_type));
TYPE_STUB_DECL (t) = TYPE_NAME (t) = type_decl;
}
else
type_decl = TYPE_NAME (t);
@ -5193,6 +5207,18 @@ instantiate_class_template (type)
TYPE_BEING_DEFINED (type) = 0;
repo_template_used (type);
/* Now that the class is complete, instantiate default arguments for
any member functions. We don't do this earlier because the
default arguments may reference members of the class. */
if (!PRIMARY_TEMPLATE_P (template))
for (t = TYPE_METHODS (type); t; t = TREE_CHAIN (t))
if (TREE_CODE (t) == FUNCTION_DECL
/* Implicitly generated member functions will not have tmplate
information; they are not instantiations, but instead are
created "fresh" for each instantiation. */
&& DECL_TEMPLATE_INFO (t))
tsubst_default_arguments (t);
popclass ();
pop_from_top_level ();
pop_tinst_level ();
@ -5417,6 +5443,66 @@ tsubst_aggr_type (t, args, complain, in_decl, entering_scope)
}
}
/* Substitute into the default argument ARG (a default argument for
FN), which has the indicated TYPE. */
tree
tsubst_default_argument (fn, type, arg)
tree fn;
tree type;
tree arg;
{
/* This default argument came from a template. Instantiate the
default argument here, not in tsubst. In the case of
something like:
template <class T>
struct S {
static T t();
void f(T = t());
};
we must be careful to do name lookup in the scope of S<T>,
rather than in the current class. */
if (DECL_CLASS_SCOPE_P (fn))
pushclass (DECL_REAL_CONTEXT (fn), 2);
arg = tsubst_expr (arg, DECL_TI_ARGS (fn), /*complain=*/1, NULL_TREE);
if (DECL_CLASS_SCOPE_P (fn))
popclass ();
/* Make sure the default argument is reasonable. */
arg = check_default_argument (type, arg);
return arg;
}
/* Substitute into all the default arguments for FN. */
static void
tsubst_default_arguments (fn)
tree fn;
{
tree arg;
tree tmpl_args;
tmpl_args = DECL_TI_ARGS (fn);
/* If this function is not yet instantiated, we certainly don't need
its default arguments. */
if (uses_template_parms (tmpl_args))
return;
for (arg = TYPE_ARG_TYPES (TREE_TYPE (fn));
arg;
arg = TREE_CHAIN (arg))
if (TREE_PURPOSE (arg))
TREE_PURPOSE (arg) = tsubst_default_argument (fn,
TREE_VALUE (arg),
TREE_PURPOSE (arg));
}
/* Substitute the ARGS into the T, which is a _DECL. TYPE is the
(already computed) substitution of ARGS into TREE_TYPE (T), if
appropriate. Return the result of the substitution. IN_DECL is as
@ -5804,6 +5890,22 @@ tsubst_decl (t, args, type, in_decl)
&& (IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (r))
== NULL_TREE))
SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (r), r);
/* We're not supposed to instantiate default arguments
until they are called, for a template. But, for a
declaration like:
template <class T> void f ()
{ extern void g(int i = T()); }
we should do the substitution when the template is
instantiated. We handle the member function case in
instantiate_class_template since the default arguments
might refer to other members of the class. */
if (!member
&& !PRIMARY_TEMPLATE_P (gen_tmpl)
&& !uses_template_parms (argvec))
tsubst_default_arguments (r);
}
/* Copy the list of befriending classes. */
@ -5877,26 +5979,56 @@ tsubst_decl (t, args, type, in_decl)
}
break;
case TYPE_DECL:
if (DECL_IMPLICIT_TYPEDEF_P (t))
{
/* For an implicit typedef, we just want the implicit
typedef for the tsubst'd type. We've already got the
tsubst'd type, as TYPE, so we just need it's associated
declaration. */
r = TYPE_NAME (type);
break;
}
else if (!DECL_LANG_SPECIFIC (t))
{
/* For a template type parameter, we don't have to do
anything special. */
r= TYPE_NAME (type);
break;
}
/* Fall through. */
case VAR_DECL:
{
tree argvec;
tree gen_tmpl;
tree spec;
tree tmpl;
tree ctx = tsubst_aggr_type (DECL_CONTEXT (t), args,
/*complain=*/1,
in_decl, /*entering_scope=*/1);
tree ctx;
/* Nobody should be tsubst'ing into non-template variables. */
my_friendly_assert (DECL_LANG_SPECIFIC (t)
&& DECL_TEMPLATE_INFO (t) != NULL_TREE, 0);
if (TYPE_P (DECL_CONTEXT (t)))
ctx = tsubst_aggr_type (DECL_CONTEXT (t), args,
/*complain=*/1,
in_decl, /*entering_scope=*/1);
else
/* Subsequent calls to pushdecl will fill this in. */
ctx = NULL_TREE;
/* Check to see if we already have this specialization. */
tmpl = DECL_TI_TEMPLATE (t);
gen_tmpl = most_general_template (tmpl);
argvec = tsubst (DECL_TI_ARGS (t), args, /*complain=*/1, in_decl);
spec = retrieve_specialization (gen_tmpl, argvec);
if (ctx)
spec = retrieve_specialization (gen_tmpl, argvec);
else
spec = retrieve_local_specialization (gen_tmpl,
current_function_decl);
if (spec)
{
r = spec;
@ -5923,26 +6055,18 @@ tsubst_decl (t, args, type, in_decl)
DECL_TEMPLATE_INFO (r) = perm_tree_cons (tmpl, argvec, NULL_TREE);
SET_DECL_IMPLICIT_INSTANTIATION (r);
register_specialization (r, gen_tmpl, argvec);
if (ctx)
register_specialization (r, gen_tmpl, argvec);
else
register_local_specialization (r, gen_tmpl,
current_function_decl);
TREE_CHAIN (r) = NULL_TREE;
if (TREE_CODE (type) == VOID_TYPE)
if (TREE_CODE (r) == VAR_DECL && TREE_CODE (type) == VOID_TYPE)
cp_error_at ("instantiation of `%D' as type void", r);
}
break;
case TYPE_DECL:
if (t == TYPE_NAME (TREE_TYPE (t)))
r = TYPE_NAME (type);
else
{
r = copy_node (t);
TREE_TYPE (r) = type;
DECL_CONTEXT (r) = current_class_type;
TREE_CHAIN (r) = NULL_TREE;
}
break;
default:
my_friendly_abort (0);
}
@ -6759,15 +6883,15 @@ tsubst_copy (t, args, complain, in_decl)
return t;
/* Unfortunately, we cannot just call lookup_name here.
Consider:
template <int I> int f() {
enum E { a = I };
struct S { void g() { E e = a; } };
};
When we instantiate f<7>::S::g(), say, lookup_name is not
clever enough to find f<7>::a. */
Consider:
template <int I> int f() {
enum E { a = I };
struct S { void g() { E e = a; } };
};
When we instantiate f<7>::S::g(), say, lookup_name is not
clever enough to find f<7>::a. */
enum_type
= tsubst_aggr_type (TREE_TYPE (t), args, complain, in_decl,
/*entering_scope=*/0);

17
gcc/cp/search.c
View File

@ -622,6 +622,17 @@ current_scope ()
return current_class_type;
}
/* Returns non-zero if we are currently in a function scope. Note
that this function returns zero if we are within a local class, but
not within a member function body of the local class. */
int
at_function_scope_p ()
{
tree cs = current_scope ();
return cs && TREE_CODE (cs) == FUNCTION_DECL;
}
/* Return the scope of DECL, as appropriate when doing name-lookup. */
static tree
@ -1212,9 +1223,9 @@ lookup_field_queue_p (binfo, data)
return binfo;
}
/* Within the scope of a template class, you can refer to the
particular to the current specialization with the name of the
template itself. For example:
/* Within the scope of a template class, you can refer to the to the
current specialization with the name of the template itself. For
example:
template <typename T> struct S { S* sp; }

37
gcc/cp/semantics.c
View File

@ -780,12 +780,9 @@ finish_asm_stmt (cv_qualifier, string, output_operands,
if (TREE_CHAIN (string))
{
if (processing_template_decl)
{
/* We need to build the combined string on the permanent
obstack so that we can use it during instantiations. */
push_obstacks_nochange ();
end_temporary_allocation ();
}
/* We need to build the combined string on the permanent
obstack so that we can use it during instantiations. */
push_permanent_obstack ();
string = combine_strings (string);
@ -842,8 +839,7 @@ finish_label_stmt (name)
if (processing_template_decl)
{
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
decl = build_decl (LABEL_DECL, name, void_type_node);
pop_obstacks ();
DECL_SOURCE_LINE (decl) = lineno;
@ -858,6 +854,21 @@ finish_label_stmt (name)
}
}
/* Create a declaration statement for the declaration given by the
DECL. */
void
add_decl_stmt (decl)
tree decl;
{
tree decl_stmt;
/* We need the type to last until instantiation time. */
TREE_TYPE (decl) = copy_to_permanent (TREE_TYPE (decl));
decl_stmt = build_min_nt (DECL_STMT, decl);
add_tree (decl_stmt);
}
/* Finish a parenthesized expression EXPR. */
tree
@ -1302,9 +1313,8 @@ tree
begin_class_definition (t)
tree t;
{
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
if (t == error_mark_node
|| ! IS_AGGR_TYPE (t))
{
@ -1726,12 +1736,9 @@ finish_typeof (expr)
{
tree t;
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
t = make_lang_type (TYPEOF_TYPE);
TYPE_FIELDS (t) = expr;
pop_obstacks ();
return t;

21
gcc/cp/tree.c
View File

@ -442,7 +442,7 @@ build_cplus_array_type_1 (elt_type, index_type)
push_obstacks_nochange ();
/* We need a new one. If both ELT_TYPE and INDEX_TYPE are permanent,
/* If both ELT_TYPE and INDEX_TYPE are permanent,
make this permanent too. */
if (TREE_PERMANENT (elt_type)
&& (index_type == 0 || TREE_PERMANENT (index_type)))
@ -1533,8 +1533,7 @@ copy_template_template_parm (t)
tree t2;
/* Make sure these end up on the permanent_obstack. */
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
t2 = make_lang_type (TEMPLATE_TEMPLATE_PARM);
template = copy_node (template);
@ -2086,11 +2085,8 @@ copy_to_permanent (t)
if (t == NULL_TREE || TREE_PERMANENT (t))
return t;
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
t = mapcar (t, perm_manip);
pop_obstacks ();
return t;
@ -2622,6 +2618,17 @@ push_expression_obstack ()
current_obstack = expression_obstack;
}
/* Begin allocating on the permanent obstack. When you're done
allocating there, call pop_obstacks to return to the previous set
of obstacks. */
void
push_permanent_obstack ()
{
push_obstacks_nochange ();
end_temporary_allocation ();
}
/* The type of ARG when used as an lvalue. */
tree

3
gcc/cp/typeck.c
View File

@ -5090,8 +5090,7 @@ mark_addressable (exp)
{
/* We thought this would make a good constant variable,
but we were wrong. */
push_obstacks_nochange ();
end_temporary_allocation ();
push_permanent_obstack ();
TREE_ASM_WRITTEN (x) = 0;
DECL_RTL (x) = 0;

2
gcc/testsuite/g++.old-deja/g++.pt/crash15.C
View File

@ -6,5 +6,5 @@ struct A { // ERROR - too many template parameter lists
public:
A() {}
A(const A<T>& b) {} // ERROR - invalid use of template
A(const A<T>& b) {}
};

12
gcc/testsuite/g++.old-deja/g++.pt/defarg12.C Normal file
View File

@ -0,0 +1,12 @@
// Build don't link:
// Origin: Mark Mitchell <mark@codesourcery.com>
template <class T = int>
struct S
{
void f ()
{
struct U {
};
}
};

13
gcc/testsuite/g++.old-deja/g++.pt/defarg13.C Normal file
View File

@ -0,0 +1,13 @@
// Build don't link:
// Origin: Mark Mitchell <mark@codesourcery.com>
template <class T>
void f (int i)
{
struct S { void g (int j = i) {} }; // ERROR - default argument uses local
S s; // ERROR - instantiated here
}
template void f<double>(int); // ERROR - instantiated here