1 files changed, 2 insertions, 0 deletions
diff --git a/parse.cxx b/parse.cxx
index 4238f37e..41ec6fef 100644
--- a/parse.cxx
+++ b/parse.cxx
@@ -648,6 +648,8 @@ parser::parse_assignment ()
 	  t->content == "+=" ||
 	  false)) // XXX: add /= etc.
     {
+      if (op1->is_lvalue () == 0)
+        throw parse_error ("assignment not to lvalue");
       assignment* e = new assignment;
       e->left = op1;
       e->op = t->content;