trace: need autoload on sys:*trace-level*.

* autoload.c (trace_set_entries): Add sys:*trace-level*
symbol as autoload trigger. Compiled code which uses
the :trace parameter macro references this variable
(and some other internal trace symbols, but that one
first).

1 files changed, 5 insertions, 0 deletions

diff --git a/autoload.c b/autoload.c
index 84376173..32e24e5c 100644
--- a/autoload.c
+++ b/autoload.c
@@ -396,6 +396,10 @@ static val build_instantiate(void)
 
 static val trace_set_entries(val fun)
 {
+  val sys_vname[] = {
+    lit("*trace-level*"),
+    nil
+  };
   val sys_name[] = {
     lit("trace"), lit("untrace"), nil
   };
@@ -408,6 +412,7 @@ static val trace_set_entries(val fun)
   val kname[] = {
     lit("trace"), nil
   };
+  autoload_sys_set(al_var, sys_vname, fun);
   autoload_sys_set(al_fun, sys_name, fun);
   autoload_set(al_var, vname, fun);
   autoload_set(al_fun, name, fun);