gistfile1.txt

diff --git a/src/vm/parrot/QAST/Compiler.nqp b/src/vm/parrot/QAST/Compiler.nqp
index ae729d0..becfebe 100644
--- a/src/vm/parrot/QAST/Compiler.nqp
+++ b/src/vm/parrot/QAST/Compiler.nqp
@@ -988,6 +988,10 @@ class QAST::Compiler is HLL::Compiler {
     multi method as_post(QAST::WVal $node, :$want) {
         my $val    := $node.value;
         my $sc     := nqp::getobjsc($val);
+        if nqp::isnull($sc) {
+            nqp::die("Object of type " ~ $val.HOW.name($val) ~
+                " in QAST::WVal is not in a serialization context");
+        }
         my $handle := nqp::scgethandle($sc);
         my $idx    := nqp::scgetobjidx($sc, $val);
         my $reg    := $*REGALLOC.fresh_p();