[tuples] Fix expected dejagnu patterns in constructors.c

[Diego Novillo]

Chris was getting intermittent failures on this testcase because dejagnu was not matching the '[]' properly.  Fixed by escaping the brace the required 1 million times.

2007-07-24  Diego Novillo  <dnovillo@google.com>

        * gcc.dg/gimple/constructors.c: Fix expected pattern.

Index: gcc.dg/gimple/constructors.c
===================================================================
--- gcc.dg/gimple/constructors.c        (revision 126872)
+++ gcc.dg/gimple/constructors.c        (working copy)
@@ -10,10 +10,10 @@ void foo()
     bar(a);
 }

-/* { dg-final { scan-tree-dump-times "gimpleir: a.0. = 1" 1 "gimple"} } */
-/* { dg-final { scan-tree-dump-times "gimpleir: a.1. = 2" 1 "gimple"} } */
-/* { dg-final { scan-tree-dump-times "gimpleir: a.2. = 3" 1 "gimple"} } */
-/* { dg-final { scan-tree-dump-times "gimpleir: a.3. = 4" 1 "gimple"} } */
-/* { dg-final { scan-tree-dump-times "gimpleir: a.4. = 5" 1 "gimple"} } */
+/* { dg-final { scan-tree-dump-times "gimpleir: a\\\[0\\\] = 1" 1 "gimple"} } *
+/* { dg-final { scan-tree-dump-times "gimpleir: a\\\[1\\\] = 2" 1 "gimple"} } *
+/* { dg-final { scan-tree-dump-times "gimpleir: a\\\[2\\\] = 3" 1 "gimple"} } *
+/* { dg-final { scan-tree-dump-times "gimpleir: a\\\[3\\\] = 4" 1 "gimple"} } *
+/* { dg-final { scan-tree-dump-times "gimpleir: a\\\[4\\\] = 5" 1 "gimple"} } *
 /* { dg-final { scan-tree-dump-times "gimpleir: bar \\(&a\\)" 1 "gimple"} } */
 /* { dg-final { cleanup-tree-dump "gimple" } } */