(C++) linkage patch

[Jason Merrill]

See the comment.

1999-03-03  Jason Merrill  <jason@yorick.cygnus.com>

	* decl2.c (import_export_class): Also return if
	CLASSTYPE_INTERFACE_ONLY is set.

Index: decl2.c
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/cp/decl2.c,v
retrieving revision 1.187
diff -c -p -r1.187 decl2.c
*** decl2.c	1999/02/26 23:36:55	1.187
--- decl2.c	1999/03/03 19:21:06
*************** import_export_class (ctype)
*** 2472,2477 ****
--- 2472,2485 ----
    int import_export = 0;
  
    if (CLASSTYPE_INTERFACE_KNOWN (ctype))
+     return;
+ 
+   /* If MULTIPLE_SYMBOL_SPACES is defined and we saw a #pragma interface,
+      we will have CLASSTYPE_INTERFACE_ONLY set but not
+      CLASSTYPE_INTERFACE_KNOWN.  In that case, we don't want to use this
+      heuristic because someone will supply a #pragma implementation
+      elsewhere, and deducing it here would produce a conflict.  */
+   if (CLASSTYPE_INTERFACE_ONLY (ctype))
      return;
  
  #ifdef VALID_MACHINE_TYPE_ATTRIBUTE