re PR c++/10506 (ICE in build_new at cp/init.c with -fkeep-inline-functions and multiple inheritance)

PR c++/10506
	* method.c (use_thunk): Decrement immediate_size_expand.

	PR c++/10503
	* cp-tree.h (DECL_VAR_MARKED_P): New macro.
	(DECL_MAYBE_TEMPLATE): Remove.
	* class.c (fixed_type_or_null): Avoid infinite recursion.

	PR c++/10506
	* g++.dg/init/new6.C: New test.

	PR c++/10503
	* g++.dg/init/ref6.C: New test.

From-SVN: r66150

gcc/cp/ChangeLog

@@ -1,5 +1,13 @@
 2003-04-27  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/10506
+	* method.c (use_thunk): Decrement immediate_size_expand.
+
+	PR c++/10503
+	* cp-tree.h (DECL_VAR_MARKED_P): New macro.
+	(DECL_MAYBE_TEMPLATE): Remove.
+	* class.c (fixed_type_or_null): Avoid infinite recursion.
+
 	* decl.c (maybe_commonize_var): Make the code match the comments.
 	* pt.c (instantiate_decl): Move call to import_export_decl.
 

gcc/cp/class.c

@@ -5388,11 +5388,21 @@ fixed_type_or_null (tree instance, int* nonnull, int* cdtorp)
           /* Reference variables should be references to objects.  */
           if (nonnull)
 	    *nonnull = 1;
-
-	  if (TREE_CODE (instance) == VAR_DECL
-	      && DECL_INITIAL (instance))
-	    return fixed_type_or_null (DECL_INITIAL (instance),
-				       nonnull, cdtorp);
+	  
+	  /* DECL_VAR_MARKED_P is used to prevent recursion; a
+	     variable's initializer may refer to the variable
+	     itself.  */
+	  if (TREE_CODE (instance) == VAR_DECL 
+	      && DECL_INITIAL (instance)
+	      && !DECL_VAR_MARKED_P (instance))
+	    {
+	      tree type;
+	      DECL_VAR_MARKED_P (instance) = 1;
+	      type = fixed_type_or_null (DECL_INITIAL (instance),
+					 nonnull, cdtorp);
+	      DECL_VAR_MARKED_P (instance) = 0;
+	      return type;
+	    }
 	}
       return NULL_TREE;
 

gcc/cp/cp-tree.h

@@ -95,7 +95,7 @@ struct diagnostic_context;
       DECL_IMPLICIT_TYPEDEF_P (in a TYPE_DECL)
    3: DECL_IN_AGGR_P.
    4: DECL_C_BIT_FIELD (in a FIELD_DECL)
-      DECL_MAYBE_TEMPLATE (in a FUNCTION_DECL)
+      DECL_VAR_MARKED_P (in a VAR_DECL)
    5: DECL_INTERFACE_KNOWN.
    6: DECL_THIS_STATIC (in VAR_DECL or FUNCTION_DECL).
    7: DECL_DEAD_FOR_LOCAL (in VAR_DECL).
@@ -2131,6 +2131,12 @@ struct lang_decl GTY(())
   (DECL_LANG_SPECIFIC (VAR_TEMPL_TYPE_OR_FUNCTION_DECL_CHECK (NODE)) \
    ->decl_flags.u.template_info)
 
+/* For a VAR_DECL, indicates that the variable has been processed.
+   This flag is set and unset throughout the code; it is always
+   used for a temporary purpose.  */
+#define DECL_VAR_MARKED_P(NODE) \
+  (DECL_LANG_FLAG_4 (VAR_DECL_CHECK (NODE)))
+
 /* Template information for a RECORD_TYPE or UNION_TYPE.  */
 #define CLASSTYPE_TEMPLATE_INFO(NODE) \
   (LANG_TYPE_CLASS_CHECK (RECORD_OR_UNION_TYPE_CHECK (NODE))->template_info)
@@ -2807,9 +2813,6 @@ struct lang_decl GTY(())
 #define PROCESSING_REAL_TEMPLATE_DECL_P() \
   (processing_template_decl > template_class_depth (current_class_type))
 
-/* This function may be a guiding decl for a template.  */
-#define DECL_MAYBE_TEMPLATE(NODE) DECL_LANG_FLAG_4 (NODE)
-
 /* Nonzero if this VAR_DECL or FUNCTION_DECL has already been
    instantiated, i.e. its definition has been generated from the
    pattern given in the the template.  */

gcc/cp/method.c

@@ -439,6 +439,9 @@ use_thunk (tree thunk_fndecl, bool emit_p)
       assemble_end_function (thunk_fndecl, fnname);
       current_function_decl = 0;
       cfun = 0;
+      /* Because init_function_start increments this, we must
+	 decrement it.  */
+      immediate_size_expand--;
       TREE_ASM_WRITTEN (thunk_fndecl) = 1;
     }
   else

gcc/testsuite/ChangeLog

@@ -1,3 +1,11 @@
+2003-04-27  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/10506
+	* g++.dg/init/new6.C: New test.
+
+	PR c++/10503
+	* g++.dg/init/ref6.C: New test.
+
 2003-04-26  David Edelsohn  <edelsohn@gnu.org>
 
 	* g++.dg/warn/weak1.C: XFAIL on AIX4.

gcc/testsuite/g++.dg/init/new6.C

@@ -0,0 +1,8 @@
+// { dg-options "-fkeep-inline-functions" }
+
+struct B1 { virtual ~B1(); };
+struct B2 { virtual ~B2(); };
+struct D : B1, B2 {};
+struct X : D      { X (); };
+
+X::X () { new int; }

gcc/testsuite/g++.dg/init/ref6.C

@@ -0,0 +1,12 @@
+struct B {
+  void g() { }
+};
+
+struct A {
+  void f() {
+    B &b = b;
+    b.g();
+  }
+};
+
+int main(void) { }