1 files changed, 4 insertions, 0 deletions

diff --git a/src/lj_dispatch.c b/src/lj_dispatch.c
index b1d17add..38fd1709 100644
--- a/src/lj_dispatch.c
+++ b/src/lj_dispatch.c
@@ -431,8 +431,12 @@ ASMFunction LJ_FASTCALL lj_dispatch_call(lua_State *L, const BCIns *pc)
     goto out;
   } else if (J->state != LJ_TRACE_IDLE &&
              !(g->hookmask & (HOOK_GC|HOOK_VMEVENT))) {
+#ifdef LUA_USE_ASSERT
+    ptrdiff_t delta = L->top - L->base;
+#endif
     /* Record the FUNC* bytecodes, too. */
     lj_trace_ins(J, pc-1);  /* The interpreter bytecode PC is offset by 1. */
+    lua_assert(L->top - L->base == delta);
   }
 #endif
   if ((g->hookmask & LUA_MASKCALL)) {