[google/integration] Fix testsuite error introduced in r174121

[Simon Baldwin]

Fix testsuite error introduced in r174121.

r174121 introduces a new warn_self_assign options variable that conflicts
with a static function in gcc/testsuite/g{cc,++}.dg/plugin/selfassign.c.
Import a small portion of r172992 to avoid the problem.

Okay for google/integration?

gcc/testsuite/ChangeLog.google-integration:
2011-05-27  Simon Baldwin  <sim...@google.com>

        * testsuite/gcc.dg/plugin/selfassign.c (check_self_assign): Renamed
        from warn_self_assign.
        (execute_warn_self_assign): Call a function by its new name.
        * testsuite/g++.dg/plugin/selfassign.c (check_self_assign): Renamed
        from warn_self_assign.
        (execute_warn_self_assign): Call a function by its new name.


Index: gcc/testsuite/gcc.dg/plugin/selfassign.c
===================================================================
--- gcc/testsuite/gcc.dg/plugin/selfassign.c    (revision 174121)
+++ gcc/testsuite/gcc.dg/plugin/selfassign.c    (working copy)
@@ -194,7 +194,7 @@ compare_and_warn (gimple stmt, tree lhs,
 /* Check and warn if STMT is a self-assign statement.  */
 
 static void
-warn_self_assign (gimple stmt)
+check_self_assign (gimple stmt)
 {
   tree rhs, lhs;
 
@@ -247,7 +247,7 @@ execute_warn_self_assign (void)
   FOR_EACH_BB (bb)
     {
       for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
-        warn_self_assign (gsi_stmt (gsi));
+        check_self_assign (gsi_stmt (gsi));
     }
 
   return 0;
Index: gcc/testsuite/g++.dg/plugin/selfassign.c
===================================================================
--- gcc/testsuite/g++.dg/plugin/selfassign.c    (revision 174121)
+++ gcc/testsuite/g++.dg/plugin/selfassign.c    (working copy)
@@ -194,7 +194,7 @@ compare_and_warn (gimple stmt, tree lhs,
 /* Check and warn if STMT is a self-assign statement.  */
 
 static void
-warn_self_assign (gimple stmt)
+check_self_assign (gimple stmt)
 {
   tree rhs, lhs;
 
@@ -247,7 +247,7 @@ execute_warn_self_assign (void)
   FOR_EACH_BB (bb)
     {
       for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
-        warn_self_assign (gsi_stmt (gsi));
+        check_self_assign (gsi_stmt (gsi));
     }
 
   return 0;