* debug.c (debug_make_undefined_tagged_type): Make sure we are

given a kind of type we can handle.
	(debug_write_type): Handle undefined enums and structs.
	(debug_write_class_type): Handle undefined classes.
	* prdbg.c (pr_enum_type): Handle an undefined enum.
Also comment changes to debug.h.

binutils/ChangeLog

@@ -1,3 +1,11 @@
+Thu Jan 11 11:45:34 1996  Ian Lance Taylor  <ian@cygnus.com>
+
+	* debug.c (debug_make_undefined_tagged_type): Make sure we are
+	given a kind of type we can handle.
+	(debug_write_type): Handle undefined enums and structs.
+	(debug_write_class_type): Handle undefined classes.
+	* prdbg.c (pr_enum_type): Handle an undefined enum.
+
 Wed Jan 10 15:33:18 1996  Ian Lance Taylor  <ian@cygnus.com>
 
 	* Makefile.in: Updated dependencies.

binutils/debug.c

@@ -1706,6 +1706,20 @@ debug_make_undefined_tagged_type (handle, name, kind)
   if (name == NULL)
     return DEBUG_TYPE_NULL;
 
+  switch (kind)
+    {
+    case DEBUG_KIND_STRUCT:
+    case DEBUG_KIND_UNION:
+    case DEBUG_KIND_CLASS:
+    case DEBUG_KIND_UNION_CLASS:
+    case DEBUG_KIND_ENUM:
+      break;
+
+    default:
+      debug_error ("debug_make_undefined_type: unsupported kind");
+      return DEBUG_TYPE_NULL;
+    }
+
   t = debug_make_type (info, kind, 0);
   if (t == NULL)
     return DEBUG_TYPE_NULL;
@@ -2250,19 +2264,24 @@ debug_write_type (info, fns, fhandle, type, name)
       return (*fns->bool_type) (fhandle, type->size);
     case DEBUG_KIND_STRUCT:
     case DEBUG_KIND_UNION:
+      if (type->u.kclass != NULL)
+	{
 	  if (info->class_mark == type->u.kclass->mark)
 	    {
-	  /* We are currently outputting this struct.  I don't know if
-             this can happen, but it can happen for a class.  */
+	      /* We are currently outputting this struct.  I don't
+		 know if this can happen, but it can happen for a
+		 class.  */
 	      return (*fns->tag_type) (fhandle, "?defining?", type->kind);
 	    }
 	  type->u.kclass->mark = info->class_mark;
+	}
 
       if (! (*fns->start_struct_type) (fhandle, tag,
 				       type->kind == DEBUG_KIND_STRUCT,
 				       type->size))
 	return false;
-      if (type->u.kclass->fields != NULL)
+      if (type->u.kclass != NULL
+	  && type->u.kclass->fields != NULL)
 	{
 	  for (i = 0; type->u.kclass->fields[i] != NULL; i++)
 	    {
@@ -2281,6 +2300,9 @@ debug_write_type (info, fns, fhandle, type, name)
     case DEBUG_KIND_UNION_CLASS:
       return debug_write_class_type (info, fns, fhandle, type, tag);
     case DEBUG_KIND_ENUM:
+      if (type->u.kenum == NULL)
+	return (*fns->enum_type) (fhandle, tag, (const char **) NULL,
+				  (bfd_signed_vma *) NULL);
       return (*fns->enum_type) (fhandle, tag, type->u.kenum->names,
 				type->u.kenum->values);
     case DEBUG_KIND_POINTER:
@@ -2389,10 +2411,12 @@ debug_write_class_type (info, fns, fhandle, type, tag)
 {
   unsigned int i;
 
+  if (type->u.kclass != NULL)
+    {
       if (info->class_mark == type->u.kclass->mark)
 	{
-      /* We are currently outputting this class.  This can happen when
-         there are methods for an anonymous class.  */
+	  /* We are currently outputting this class.  This can happen
+	     when there are methods for an anonymous class.  */
 	  return (*fns->tag_type) (fhandle, "?defining?", type->kind);
 	}
       type->u.kclass->mark = info->class_mark;
@@ -2400,10 +2424,12 @@ debug_write_class_type (info, fns, fhandle, type, tag)
       if (type->u.kclass->vptrbase != NULL
 	  && type->u.kclass->vptrbase != type)
 	{
-      if (! debug_write_type (info, fns, fhandle, type->u.kclass->vptrbase,
+	  if (! debug_write_type (info, fns, fhandle,
+				  type->u.kclass->vptrbase,
 				  (struct debug_name *) NULL))
 	    return false;
 	}
+    }
 
   if (! (*fns->start_class_type) (fhandle, tag,
 				  type->kind == DEBUG_KIND_CLASS,
@@ -2411,6 +2437,9 @@ debug_write_class_type (info, fns, fhandle, type, tag)
 				  type->u.kclass->vptrbase != NULL,
 				  type->u.kclass->vptrbase == type))
     return false;
+
+  if (type->u.kclass != NULL)
+    {
       if (type->u.kclass->fields != NULL)
 	{
 	  for (i = 0; type->u.kclass->fields[i] != NULL; i++)
@@ -2481,7 +2510,8 @@ debug_write_class_type (info, fns, fhandle, type, tag)
 		    {
 		      if (! (*fns->class_method_variant) (fhandle, v->argtypes,
 							  v->visibility,
-						      v->constp, v->volatilep,
+							  v->constp,
+							  v->volatilep,
 							  v->voffset,
 							  v->context != NULL))
 			return false;
@@ -2500,6 +2530,7 @@ debug_write_class_type (info, fns, fhandle, type, tag)
 		return false;
 	    }
 	}
+    }
 
   return (*fns->end_class_type) (fhandle);
 }

binutils/debug.h

@@ -194,7 +194,8 @@ struct debug_write_fns
 
   /* Push an enum type onto the type stack, given the tag, a NULL
      terminated array of names and the associated values.  If there is
-     no tag, the tag argument will be NULL.  */
+     no tag, the tag argument will be NULL.  If this is an undefined
+     enum, the names and values arguments will be NULL.  */
   boolean (*enum_type) PARAMS ((PTR, const char *, const char **,
 				bfd_signed_vma *));
 
@@ -259,7 +260,9 @@ struct debug_write_fns
      end_struct_type function.  The second argument is the tag; this
      will be NULL if there isn't one.  The boolean argument is true
      for a struct, false for a union.  The unsigned int argument is
-     the size.  */
+     the size.  If this is an undefined struct or union, the size will
+     be 0 and struct_field will not be called before end_struct_type
+     is called.  */
   boolean (*start_struct_type) PARAMS ((PTR, const char *, boolean,
 					unsigned int));
 

binutils/prdbg.c

@@ -519,6 +519,13 @@ pr_enum_type (p, tag, names, values)
   if (! append_type (info, "{ "))
     return false;
 
+  if (names == NULL)
+    {
+      if (! append_type (info, "/* undefined */"))
+	return false;
+    }
+  else
+    {
       val = 0;
       for (i = 0; names[i] != NULL; i++)
 	{
@@ -544,6 +551,7 @@ pr_enum_type (p, tag, names, values)
 
 	  ++val;
 	}
+    }
 
   return append_type (info, " }");
 }