re PR rtl-optimization/71591 (SIGSEGV in test_uncond_jump (rtl-tests.c:90) with -E -fself-test)

	PR rtl-optimization/71591
	* toplev.c (toplev::run_self_tests): If no_backend, complain and
	don't run any tests.

	* gcc.dg/cpp/pr71591.c: New test.

From-SVN: r237620

gcc/ChangeLog

+2016-06-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/71591
+	* toplev.c (toplev::run_self_tests): If no_backend, complain and
+	don't run any tests.
+
 2016-06-20  Hans-Peter Nilsson  <hp@axis.com>
 
 	PR target/71571

gcc/testsuite/ChangeLog

+2016-06-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/71591
+	* gcc.dg/cpp/pr71591.c: New test.
+
 2016-06-20   David B. Robins  <gcc@davidrobins.net>
 
 	PR target/71571

gcc/testsuite/gcc.dg/cpp/pr71591.c

+/* PR rtl-optimization/71591 */
+/* { dg-do preprocess } */
+/* { dg-options "-fself-test" } */
+
+/* { dg-message "self-tests incompatible with -E" "" { target *-*-* } 0 } */

gcc/toplev.c

@@ -2047,6 +2047,11 @@ toplev::start_timevars ()
 void
 toplev::run_self_tests ()
 {
+  if (no_backend)
+    {
+      error_at (UNKNOWN_LOCATION, "self-tests incompatible with -E");
+      return;
+    }
 #if CHECKING_P
   /* Reset some state.  */
   input_location = UNKNOWN_LOCATION;