fix atomics

Author: JeffBezanson

src/opaque_closure.c

@@ -59,19 +59,19 @@ jl_opaque_closure_t *jl_new_opaque_closure(jl_tupletype_t *argt, jl_value_t *isv
     oc->captures = captures;
     oc->specptr = NULL;
     int compiled = 0;
-    if (ci->invoke == jl_fptr_interpret_call) {
+    if (jl_atomic_load_relaxed(&ci->invoke) == jl_fptr_interpret_call) {
         oc->invoke = (jl_fptr_args_t)jl_interpret_opaque_closure;
     }
-    else if (ci->invoke == jl_fptr_args) {
+    else if (jl_atomic_load_relaxed(&ci->invoke) == jl_fptr_args) {
         oc->invoke = jl_atomic_load_relaxed(&ci->specptr.fptr1);
         compiled = 1;
     }
-    else if (ci->invoke == jl_fptr_const_return) {
+    else if (jl_atomic_load_relaxed(&ci->invoke) == jl_fptr_const_return) {
         oc->invoke = (jl_fptr_args_t)jl_fptr_const_opaque_closure;
         oc->captures = ci->rettype_const;
     }
     else {
-        oc->invoke = (jl_fptr_args_t)ci->invoke;
+        oc->invoke = (jl_fptr_args_t)jl_atomic_load_relaxed(&ci->invoke);
         compiled = 1;
     }
     if (oc->isva && compiled) {