[Bug fortran/46313] [OOP] class container naming collisions

["janus at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46313

--- Comment #20 from janus at gcc dot gnu.org 2011-01-07 12:58:07 UTC ---
(In reply to comment #19)
> In the dump you can see that we end up with one vtab for both types.

This is easily fixed by putting the first letter of the derived type name in
upper case:


Index: gcc/fortran/class.c
===================================================================
--- gcc/fortran/class.c (revision 168565)
+++ gcc/fortran/class.c (working copy)
@@ -116,13 +116,16 @@

 static void
 get_unique_type_string (char *string, gfc_symbol *derived)
-{  
+{
+  char dt_name[GFC_MAX_SYMBOL_LEN+1];
+  sprintf (dt_name, "%s", derived->name);
+  dt_name[0] = TOUPPER (dt_name[0]);
   if (derived->module)
-    sprintf (string, "%s_%s", derived->module, derived->name);
+    sprintf (string, "%s_%s", derived->module, dt_name);
   else if (derived->ns->proc_name)
-    sprintf (string, "%s_%s", derived->ns->proc_name->name, derived->name);
+    sprintf (string, "%s_%s", derived->ns->proc_name->name, dt_name);
   else
-    sprintf (string, "_%s", derived->name);
+    sprintf (string, "_%s", dt_name);
 }


For a proper runtime test case, one could just add a call to
"same_type_as(a1,a2)" to comment #19.