re PR debug/45006 (Failed to bootstrap)

	PR debug/45006
	* cfgexpand.c (expand_debug_expr): Only look at TYPE_UNSIGNED of
	operand's type if exp is tcc_unary class tree.

From-SVN: r162348

gcc/ChangeLog

+2010-07-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/45006
+	* cfgexpand.c (expand_debug_expr): Only look at TYPE_UNSIGNED of
+	operand's type if exp is tcc_unary class tree.
+
 2010-07-20  Nathan Froyd  <froydnj@codesourcery.com>
 
 	* config/rs6000/rs6000.md (abs<mode>2_isel, nabs<mode>2_isel):

gcc/cfgexpand.c

@@ -2427,7 +2427,9 @@ expand_debug_expr (tree exp)
 	  op0 = simplify_gen_subreg (mode, op0, inner_mode,
 				     subreg_lowpart_offset (mode,
 							    inner_mode));
-	else if (TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (exp, 0))))
+	else if (TREE_CODE_CLASS (TREE_CODE (exp)) == tcc_unary
+		 ? TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (exp, 0)))
+		 : unsignedp)
 	  op0 = gen_rtx_ZERO_EXTEND (mode, op0);
 	else
 	  op0 = gen_rtx_SIGN_EXTEND (mode, op0);