Fixed misplaced assert

[r13383]

diff --git a/ir/ir/irnode_t.h b/ir/ir/irnode_t.h
index 9c7bf41..d64f1b4 100644 (file)
--- a/ir/ir/irnode_t.h
+++ b/ir/ir/irnode_t.h
@@ -427,8 +427,12 @@ _get_irn_intra_n(const ir_node *node, int n) {
        assert(-1 <= n && n < _get_irn_intra_arity(node));
 
        nn = node->in[n + 1];
-       assert(nn != NULL);
-       if (!nn || (nn->op != op_Id)) return nn;
+       if (nn == NULL) {
+               /* only block inputs are allowed to be NULL */
+               assert(n == -1 && "NULL input of a node");
+               return NULL;
+       }
+       if (nn->op != op_Id) return nn;
 
        return (node->in[n + 1] = skip_Id(nn));
 }