tree-pretty-print.c (dump_generic_node): Properly test the result of exact_log2.

2012-07-05  Richard Guenther  <rguenther@suse.de>

	* tree-pretty-print.c (dump_generic_node): Properly test
	the result of exact_log2.

From-SVN: r189291

gcc/ChangeLog

+2012-07-05  Richard Guenther  <rguenther@suse.de>
+
+	* tree-pretty-print.c (dump_generic_node): Properly test
+	the result of exact_log2.
+
 2012-07-05  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
 
 	* config/s390/s390-protos.h (s390_expand_movmem)

gcc/tree-pretty-print.c

@@ -743,7 +743,7 @@ dump_generic_node (pretty_printer *buffer, tree node, int spc, int flags,
 				      ? "unsigned long long"
 				      : "signed long long"));
 		else if (TYPE_PRECISION (node) >= CHAR_TYPE_SIZE
-			 && exact_log2 (TYPE_PRECISION (node)))
+			 && exact_log2 (TYPE_PRECISION (node)) != -1)
 		  {
 		    pp_string (buffer, (TYPE_UNSIGNED (node) ? "uint" : "int"));
 		    pp_decimal_int (buffer, TYPE_PRECISION (node));