re PR middle-end/59223 (-Wmaybe-uninitialized and -Wuninitialized relationships)

	PR middle-end/59223
	* tree-ssa-uninit.c (gate_warn_uninitialized): Run the pass even for
	-Wmaybe-uninitialized.
testsuite/
	* c-c++-common/pr59223.c: New test.

From-SVN: r208196

gcc/ChangeLog

+2014-02-27  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/59223
+	* tree-ssa-uninit.c (gate_warn_uninitialized): Run the pass even for
+	-Wmaybe-uninitialized.
+
 2014-02-27  Alan Modra  <amodra@gmail.com>
 
 	PR target/57936

gcc/testsuite/ChangeLog

+2014-02-27  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/59223
+	* c-c++-common/pr59223.c: New test.
+
 2014-02-26  Ilya Tocar  <ilya.tocar@intel.com>
 
 	* common/config/i386/predicates.md (const1256_operand): Remove.

gcc/testsuite/c-c++-common/pr59223.c

+/* PR c/59223 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wmaybe-uninitialized" } */
+
+int foo (int x)
+{
+  int y;
+  if (x == 0)
+    y = 1;
+  else if (x == 1)
+    y = 2;
+  return y; /* { dg-warning "may be used uninitialized in this function" } */
+}

gcc/tree-ssa-uninit.c

@@ -2355,7 +2355,7 @@ execute_late_warn_uninitialized (void)
 static bool
 gate_warn_uninitialized (void)
 {
-  return warn_uninitialized != 0;
+  return warn_uninitialized || warn_maybe_uninitialized;
 }
 
 namespace {