class.c (add_method): Just check processing_template_decl to determine whether or not we are within a...

* class.c (add_method): Just check processing_template_decl to
	determine whether or not we are within a template.
	* decl2.c (maybe_retrofit_in_chrg): Likewise.
	* init.c (decl_constant_value): Check the type of the declaration,
	not TREE_READONLY.
	* name-lookup.c (maybe_push_to_top_level): Rename to ...
	(push_to_top_level): ... this.
	* name-lookup.h (maybe_push_to_top_level): Do not declare it.
	* pt.c (push_template_decl_real): Reorder condition for speed.
	(convert_template_argument): Use dependency-checking functions in
	place of uses_template_parms.
	(lookup_template_class): Avoid calling uses_template_parms more
	than once.
	(uses_template_parms): Reimplement, using dependency-checking
	functions.
	(instantiate_class_template): Use push_to_top_level, not
	maybe_push_to_top_level.
	(type_unification_real): Simplify.
	(type_dependent_expression_p): Handle OFFSET_REFs and
	TEMPLATE_DECLs.
	(any_dependent_template_arguments_p): Handle multiple levels of
	template argument.
	* semantics.c (expand_or_defer_fn): Do not check
	uses_template_parms for template instantiations.
	* typeck.c (comptypes): Avoid calling cp_type_quals.

From-SVN: r76647

gcc/cp/ChangeLog

@@ -1,3 +1,31 @@
+2004-01-26  Mark Mitchell  <mark@codesourcery.com>
+
+	* class.c (add_method): Just check processing_template_decl to
+	determine whether or not we are within a template.
+	* decl2.c (maybe_retrofit_in_chrg): Likewise.
+	* init.c (decl_constant_value): Check the type of the declaration,
+	not TREE_READONLY.
+	* name-lookup.c (maybe_push_to_top_level): Rename to ...
+	(push_to_top_level): ... this.
+	* name-lookup.h (maybe_push_to_top_level): Do not declare it.
+	* pt.c (push_template_decl_real): Reorder condition for speed.
+	(convert_template_argument): Use dependency-checking functions in
+	place of uses_template_parms.
+	(lookup_template_class): Avoid calling uses_template_parms more
+	than once.
+	(uses_template_parms): Reimplement, using dependency-checking
+	functions.
+	(instantiate_class_template): Use push_to_top_level, not
+	maybe_push_to_top_level.
+	(type_unification_real): Simplify.
+	(type_dependent_expression_p): Handle OFFSET_REFs and
+	TEMPLATE_DECLs.
+	(any_dependent_template_arguments_p): Handle multiple levels of
+	template argument.
+	* semantics.c (expand_or_defer_fn): Do not check
+	uses_template_parms for template instantiations.
+	* typeck.c (comptypes): Avoid calling cp_type_quals.
+
 2004-01-25  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/13833

gcc/cp/class.c

@@ -866,7 +866,7 @@ add_method (tree type, tree method, int error_p)
 	}
     }
       
-  if (template_class_depth (type))
+  if (processing_template_decl)
     /* TYPE is a template class.  Don't issue any errors now; wait
        until instantiation time to complain.  */
     ;

gcc/cp/decl2.c

@@ -229,7 +229,7 @@ maybe_retrofit_in_chrg (tree fn)
 
   /* When processing templates we can't know, in general, whether or
      not we're going to have virtual baseclasses.  */
-  if (uses_template_parms (fn))
+  if (processing_template_decl)
     return;
 
   /* We don't need an in-charge parameter for constructors that don't

gcc/cp/init.c

@@ -1610,8 +1610,12 @@ decl_constant_value (tree decl)
 		      TREE_OPERAND (decl, 0), d1, d2);
     }
 
-  if (TREE_READONLY_DECL_P (decl)
+  if (DECL_P (decl)
-      && ! TREE_THIS_VOLATILE (decl)
+      && (/* Enumeration constants are constant.  */
+	  TREE_CODE (decl) == CONST_DECL
+	  /* And so are variables with a 'const' type -- unless they
+	     are also 'volatile'.  */
+	  || CP_TYPE_CONST_NON_VOLATILE_P (TREE_TYPE (decl)))
       && DECL_INITIAL (decl)
       && DECL_INITIAL (decl) != error_mark_node
       /* This is invalid if initial value is not constant.

gcc/cp/name-lookup.c

@@ -4688,7 +4688,7 @@ store_bindings (tree names, cxx_saved_binding *old_bindings)
 }
 
 void
-maybe_push_to_top_level (int pseudo)
+push_to_top_level (void)
 {
   struct saved_scope *s;
   struct cp_binding_level *b;
@@ -4723,7 +4723,7 @@ maybe_push_to_top_level (int pseudo)
 	 inserted into namespace level, finish_file wouldn't find them
 	 when doing pending instantiations. Therefore, don't stop at
 	 namespace level, but continue until :: .  */
-      if (global_scope_p (b) || (pseudo && b->kind == sk_template_parms))
+      if (global_scope_p (b))
 	break;
 
       old_bindings = store_bindings (b->names, old_bindings);
@@ -4751,12 +4751,6 @@ maybe_push_to_top_level (int pseudo)
   timevar_pop (TV_NAME_LOOKUP);
 }
 
-void
-push_to_top_level (void)
-{
-  maybe_push_to_top_level (0);
-}
-
 void
 pop_from_top_level (void)
 {

gcc/cp/name-lookup.h

@@ -264,7 +264,6 @@ extern void print_binding_stack	(void);
 extern void print_binding_level	(cxx_scope *);
 extern void push_to_top_level (void);
 extern void pop_from_top_level (void);
-extern void maybe_push_to_top_level (int);
 extern void pop_everything (void);
 extern void keep_next_level (bool);
 extern bool is_ancestor (tree, tree);

gcc/cp/pt.c

@@ -2909,10 +2909,10 @@ push_template_decl_real (tree decl, int is_friend)
       else
 	tmpl = DECL_TI_TEMPLATE (decl);
       
-      if (is_member_template (tmpl)
+      if (DECL_FUNCTION_TEMPLATE_P (tmpl)
-	  && DECL_FUNCTION_TEMPLATE_P (tmpl)
 	  && DECL_TEMPLATE_INFO (decl) && DECL_TI_ARGS (decl) 
-	  && DECL_TEMPLATE_SPECIALIZATION (decl))
+	  && DECL_TEMPLATE_SPECIALIZATION (decl)
+	  && is_member_template (tmpl))
 	{
 	  tree new_tmpl;
 
@@ -4275,11 +4275,7 @@ lookup_template_class (tree d1,
 				   template,
 	                           complain, /*require_all_args=*/1);
 
-      if (arglist == error_mark_node
+      if (arglist == error_mark_node)
-	  || (!uses_template_parms (INNERMOST_TEMPLATE_ARGS (arglist))
-	      && check_instantiated_args (template,
-					  INNERMOST_TEMPLATE_ARGS (arglist),
-					  complain)))
 	/* We were unable to bind the arguments.  */
 	POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
 
@@ -4340,6 +4336,14 @@ lookup_template_class (tree d1,
 	 well.  */
       is_partial_instantiation = uses_template_parms (arglist);
 
+      /* If the deduced arguments are invalid, then the binding
+	 failed.  */
+      if (!is_partial_instantiation
+	  && check_instantiated_args (template,
+				      INNERMOST_TEMPLATE_ARGS (arglist),
+				      complain))
+	POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
+	
       if (!is_partial_instantiation 
 	  && !PRIMARY_TEMPLATE_P (template)
 	  && TREE_CODE (CP_DECL_CONTEXT (template)) == NAMESPACE_DECL)
@@ -4717,7 +4721,34 @@ for_each_template_parm (tree t, tree_fn_t fn, void* data, htab_t visited)
 int
 uses_template_parms (tree t)
 {
-  return for_each_template_parm (t, 0, 0, NULL);
+  bool dependent_p;
+  int saved_processing_template_decl;
+
+  saved_processing_template_decl = processing_template_decl;
+  if (!saved_processing_template_decl)
+    processing_template_decl = 1;
+  if (TYPE_P (t))
+    dependent_p = dependent_type_p (t);
+  else if (TREE_CODE (t) == TREE_VEC)
+    dependent_p = any_dependent_template_arguments_p (t);
+  else if (TREE_CODE (t) == TREE_LIST)
+    dependent_p = (uses_template_parms (TREE_VALUE (t))
+		   || uses_template_parms (TREE_CHAIN (t)));
+  else if (DECL_P (t) 
+	   || EXPR_P (t) 
+	   || TREE_CODE (t) == TEMPLATE_PARM_INDEX
+	   || TREE_CODE (t) == OVERLOAD
+	   || TREE_CODE (t) == BASELINK
+	   || TREE_CODE_CLASS (TREE_CODE (t)) == 'c')
+    dependent_p = (type_dependent_expression_p (t)
+		   || value_dependent_expression_p (t));
+  else if (t == error_mark_node)
+    dependent_p = false;
+  else 
+    abort ();
+  processing_template_decl = saved_processing_template_decl;
+
+  return dependent_p;
 }
 
 /* Returns true if T depends on any template parameter with level LEVEL.  */
@@ -5229,7 +5260,7 @@ instantiate_class_template (tree type)
      it now.  */
   push_deferring_access_checks (dk_no_deferred);
 
-  maybe_push_to_top_level (uses_template_parms (type));
+  push_to_top_level ();
 
   if (t)
     {
@@ -8959,10 +8990,7 @@ type_unification_real (tree tparms,
 	  if (!TYPE_P (arg))
 	    type = TREE_TYPE (arg);
 	  else
-	    {
 	    type = arg;
-	      arg = NULL_TREE;
-	    }
 
 	  if (strict == DEDUCE_EXACT || strict == DEDUCE_ORDER)
 	    {
@@ -11767,11 +11795,16 @@ type_dependent_expression_p (tree expression)
 	  (INNERMOST_TEMPLATE_ARGS (DECL_TI_ARGS (expression)))))
     return true;
 
+  if (TREE_CODE (expression) == TEMPLATE_DECL
+      && !DECL_TEMPLATE_TEMPLATE_PARM_P (expression))
+    return false;
+
   if (TREE_TYPE (expression) == unknown_type_node)
     {
       if (TREE_CODE (expression) == ADDR_EXPR)
 	return type_dependent_expression_p (TREE_OPERAND (expression, 0));
-      if (TREE_CODE (expression) == COMPONENT_REF)
+      if (TREE_CODE (expression) == COMPONENT_REF
+	  || TREE_CODE (expression) == OFFSET_REF)
 	{
 	  if (type_dependent_expression_p (TREE_OPERAND (expression, 0)))
 	    return true;
@@ -11847,13 +11880,18 @@ bool
 any_dependent_template_arguments_p (tree args)
 {
   int i;
+  int j;
 
   if (!args)
     return false;
 
-  for (i = 0; i < TREE_VEC_LENGTH (args); ++i)
+  for (i = 0; i < TMPL_ARGS_DEPTH (args); ++i)
-    if (dependent_template_arg_p (TREE_VEC_ELT (args, i)))
+    {
+      tree level = TMPL_ARGS_LEVEL (args, i + 1);
+      for (j = 0; j < TREE_VEC_LENGTH (level); ++j)
+	if (dependent_template_arg_p (TREE_VEC_ELT (level, j)))
 	  return true;
+    }
 
   return false;
 }

gcc/cp/semantics.c

@@ -2930,14 +2930,8 @@ void
 expand_or_defer_fn (tree fn)
 {
   /* When the parser calls us after finishing the body of a template
-     function, we don't really want to expand the body.  When we're
+     function, we don't really want to expand the body.  */
-     processing an in-class definition of an inline function,
+  if (processing_template_decl)
-     PROCESSING_TEMPLATE_DECL will no longer be set here, so we have
-     to look at the function itself.  */
-  if (processing_template_decl
-      || (DECL_LANG_SPECIFIC (fn) 
-	  && DECL_TEMPLATE_INFO (fn)
-	  && uses_template_parms (DECL_TI_ARGS (fn))))
     {
       /* Normally, collection only occurs in rest_of_compilation.  So,
 	 if we don't collect here, we never collect junk generated

gcc/cp/typeck.c

@@ -963,8 +963,10 @@ comptypes (tree t1, tree t2, int strict)
   if (TREE_CODE (t1) != TREE_CODE (t2))
     return false;
 
-  /* Qualifiers must match.  */
+  /* Qualifiers must match.  For array types, we will check when we
-  if (cp_type_quals (t1) != cp_type_quals (t2))
+     recur on the array element types.  */
+  if (TREE_CODE (t1) != ARRAY_TYPE
+      && TYPE_QUALS (t1) != TYPE_QUALS (t2))
     return false;
   if (TYPE_FOR_JAVA (t1) != TYPE_FOR_JAVA (t2))
     return false;
@@ -973,7 +975,8 @@ comptypes (tree t1, tree t2, int strict)
      definition.  Note that we already checked for equality of the type
      qualifiers (just above).  */
 
-  if (TYPE_MAIN_VARIANT (t1) == TYPE_MAIN_VARIANT (t2))
+  if (TREE_CODE (t1) != ARRAY_TYPE
+      && TYPE_MAIN_VARIANT (t1) == TYPE_MAIN_VARIANT (t2))
     return true;
 
   if (!(*targetm.comp_type_attributes) (t1, t2))