6077 CTFE: Cannot append null array to null array

Trivial - this case was missing from constant-folding.
dlang · May 30, 2011 · 750b030 · 750b030
1 parent 26b2d82
commit 750b030
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/constfold.c b/src/constfold.c
@@ -1399,6 +1399,14 @@ Expression *Cat(Type *type, Expression *e1, Expression *e2)
         e->type = type;
         return e;
     }
+    else if (e1->op == TOKnull && e2->op == TOKnull)
+    {
+        if (type == e1->type)
+            return e1;
+        if (type == e2->type)
+            return e2;
+        return new NullExp(e1->loc, type);
+    }
     else if (e1->op == TOKstring && e2->op == TOKstring)
     {
         // Concatenate the strings