Add handy debugging line.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5552 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/m_errormgr.c b/coregrind/m_errormgr.c
index 6dc3bb8..758df25 100644
--- a/coregrind/m_errormgr.c
+++ b/coregrind/m_errormgr.c
@@ -1120,6 +1120,7 @@
             break;
          default: VG_(tool_panic)("supp_matches_callers");
       }
+      if (0) VG_(printf)("cmp %s %s\n", su->callers[i].name, caller_name);
       if (!VG_(string_match)(su->callers[i].name, caller_name))
          return False;
    }