re PR middle-end/34088 (ICE with uninitialized variable and -Werror)

	PR middle-end/34088
	* tree-ssa.c (delete_tree_ssa): Don't call fini_ssa_operands if
	init_ssa_operands has not been called for cfun.

	* gcc.dg/pr34088.c: New test.

From-SVN: r130187

gcc/ChangeLog

+2007-11-14  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/34088
+	* tree-ssa.c (delete_tree_ssa): Don't call fini_ssa_operands if
+	init_ssa_operands has not been called for cfun.
+
 2007-11-14  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	PR tree-optimization/34046

gcc/testsuite/ChangeLog

+2007-11-14  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/34088
+	* gcc.dg/pr34088.c: New test.
+
 2007-11-14  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	* gcc.c-torture/compile/20071114-1.c: New test.

gcc/testsuite/gcc.dg/pr34088.c

+/* PR middle-end/34088 */
+/* { dg-do compile } */
+/* { dg-options "-O -Wall -Werror" } */
+
+int F0 (int);
+int F1 (int t) { return F0(t); }
+int F2 (int t) { return F0(t); }
+
+extern int X[];
+static inline int foo(int i)
+{
+  return X[i];
+}
+
+int bar(int* p)
+{
+  int i;
+
+  while ( ({ if (foo(*p) && foo(*p)); p; }) );
+
+  return i;	/* { dg-error "is used uninitialized" } */
+}
+
+/* { dg-message "warnings being treated as errors" "" {target "*-*-*"} 0 } */

gcc/tree-ssa.c

@@ -899,7 +899,8 @@ delete_tree_ssa (void)
   fini_ssanames ();
   fini_phinodes ();
   /* we no longer maintain the SSA operand cache at this point.  */
-  fini_ssa_operands ();
+  if (ssa_operands_active ())
+    fini_ssa_operands ();
 
   cfun->gimple_df->global_var = NULL_TREE;