[vala] codegen: Fix cast from non-array to array

[Jürg Billeter <juergbi src gnome org>]

commit e9b2ab0fd4cc9c78e4848e33ccb19493a13d15d3
Author: Jürg Billeter <j bitron ch>
Date:   Tue Oct 19 19:35:54 2010 +0200

    codegen: Fix cast from non-array to array
    
    Array length will be set to -1 as there is no length information
    available in this case.

 codegen/valaccodebasemodule.vala |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index c970eaf..a1bc699 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -4569,6 +4569,12 @@ public class Vala.CCodeBaseModule : CodeGenerator {
 				for (int dim = 1; dim <= array_type.rank; dim++) {
 					append_array_size (expr, get_array_length_cexpression (expr.inner, dim));
 				}
+			} else if (array_type != null) {
+				// cast from non-array to array, set invalid length
+				// required by string.data, e.g.
+				for (int dim = 1; dim <= array_type.rank; dim++) {
+					append_array_size (expr, new CCodeConstant ("-1"));
+				}
 			}
 
 			var innercexpr = get_cvalue (expr.inner);