diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 04ce986b7c7..1b727ad87da 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2010-05-14  Tristan Gingold  <gingold@adacore.com>
+
+	* toplev.c (default_debug_hooks): Remove this variable.
+	(process_options): Remove assignments to default_debug_hooks.
+
 2010-05-14  Martin Jambor  <mjambor@suse.cz>
 
 	* langhooks-def.h (LANG_HOOKS_FOLD_OBJ_TYPE_REF): Remove.
diff --git a/gcc/toplev.c b/gcc/toplev.c
index b62380b4f40..67b9bfadde0 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -139,7 +139,7 @@ static const char **save_argv;
 const char *main_input_filename;
 
 /* Used to enable -fvar-tracking, -fweb and -frename-registers according
-   to optimize and default_debug_hooks in process_options ().  */
+   to optimize in process_options ().  */
 #define AUTODETECT_VALUE 2
 
 /* Current position in real source file.  */
@@ -172,10 +172,6 @@ int target_flags_explicit;
 
 const struct gcc_debug_hooks *debug_hooks;
 
-/* Debug hooks - target default.  */
-
-static const struct gcc_debug_hooks *default_debug_hooks;
-
 /* Other flags saying which kinds of debugging dump have been requested.  */
 
 int rtl_dump_and_exit;
@@ -1962,32 +1958,6 @@ process_options (void)
   if (debug_info_level == DINFO_LEVEL_NONE)
     write_symbols = NO_DEBUG;
 
-  /* Now we know write_symbols, set up the debug hooks based on it.
-     By default we do nothing for debug output.  */
-  if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG)
-    default_debug_hooks = &do_nothing_debug_hooks;
-#if defined(DBX_DEBUGGING_INFO)
-  else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG)
-    default_debug_hooks = &dbx_debug_hooks;
-#endif
-#if defined(XCOFF_DEBUGGING_INFO)
-  else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG)
-    default_debug_hooks = &xcoff_debug_hooks;
-#endif
-#ifdef SDB_DEBUGGING_INFO
-  else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG)
-    default_debug_hooks = &sdb_debug_hooks;
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
-  else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG)
-    default_debug_hooks = &dwarf2_debug_hooks;
-#endif
-#ifdef VMS_DEBUGGING_INFO
-  else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG
-	   || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG)
-    default_debug_hooks = &vmsdbg_debug_hooks;
-#endif
-
   if (write_symbols == NO_DEBUG)
     ;
 #if defined(DBX_DEBUGGING_INFO)