[multiple changes]

2004-02-29  Waldek Hebisch  <hebisch@math.uni.wroc.pl>

	PR middle-end/14203
	* function.c (uninitialized_vars_warning): Use DECL_RTL_SET_P
	instead of testing whether DECL_RTL is not NULL.

2004-02-29  Roger Sayle  <roger@eyesopen.com>

	PR middle-end/14203
	* g++.dg/warn/Wunused-6.C: New test case.

From-SVN: r78648

gcc/ChangeLog

+2004-02-29  Waldek Hebisch  <hebisch@math.uni.wroc.pl>
+
+	PR middle-end/14203
+	* function.c (uninitialized_vars_warning): Use DECL_RTL_SET_P
+	instead of testing whether DECL_RTL is not NULL.
+
 2004-02-28  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* config/sh/sh.c: Fix formatting.

gcc/function.c

@@ -5702,7 +5702,7 @@ uninitialized_vars_warning (tree block)
 	     flow.c that the entire aggregate was initialized.
 	     Unions are troublesome because members may be shorter.  */
 	  && ! AGGREGATE_TYPE_P (TREE_TYPE (decl))
-	  && DECL_RTL (decl) != 0
+	  && DECL_RTL_SET_P (decl)
 	  && GET_CODE (DECL_RTL (decl)) == REG
 	  /* Global optimizations can make it difficult to determine if a
 	     particular variable has been initialized.  However, a VAR_DECL
@@ -5717,7 +5717,7 @@ uninitialized_vars_warning (tree block)
 		 decl, decl);
       if (extra_warnings
 	  && TREE_CODE (decl) == VAR_DECL
-	  && DECL_RTL (decl) != 0
+	  && DECL_RTL_SET_P (decl)
 	  && GET_CODE (DECL_RTL (decl)) == REG
 	  && regno_clobbered_at_setjmp (REGNO (DECL_RTL (decl))))
 	warning ("%Jvariable '%D' might be clobbered by `longjmp' or `vfork'",

gcc/testsuite/ChangeLog

+2004-02-29  Roger Sayle  <roger@eyesopen.com>
+
+	PR middle-end/14203
+	* g++.dg/warn/Wunused-6.C: New test case.
+
 2004-02-28  Richard Earnshaw  <rearnsha@arm.com>
 
 	* lib/g++.exp (g++_link_flags): Don't crash if LD_LIBRARY_PATH is

gcc/testsuite/g++.dg/warn/Wunused-6.C

+/* PR middle-end/14203 */
+/* { dg-do compile } */
+/* { dg-options "-Wall" } */
+
+void foo()
+{
+  if (false)
+    if (int i=0)  // { dg-warning "unused" "" }
+      int j=0;    // { dg-warning "unused" "" }
+}
+