report warning when using null literal as return expression of method

2008-04-14  Juerg Billeter  <j@bitron.ch>

	* vala/valasemanticanalyzer.vala: report warning when using null
	  literal as return expression of method returning non-null value

	* */*.vala: fix warnings

svn path=/trunk/; revision=1228

1 files changed, 1 insertions, 1 deletions

diff --git a/vala/valastringliteral.vala b/vala/valastringliteral.vala
index f3fe9ea7e..3ffc57776 100644
--- a/vala/valastringliteral.vala
+++ b/vala/valastringliteral.vala
@@ -48,7 +48,7 @@ public class Vala.StringLiteral : Literal {
 	 *
 	 * @return the unescaped string
 	 */	
-	public string eval () {
+	public string? eval () {
 		if (value == null) {
 			return null;
 		}