1 files changed, 4 insertions, 0 deletions
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 250ea3e954..798aaa69d1 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -406,6 +406,10 @@ vm_call_cfunc(rb_thread_t *th, rb_control_frame_t *reg_cfp,
     if (reg_cfp != th->cfp + 1) {
 	rb_bug("cfp consistency error - send");
     }
+#ifdef __llvm__
+#define RB_LLVM_GUARD(v) (*RB_GC_GUARD_PTR((volatile VALUE *)&(v)))
+    RB_LLVM_GUARD(reg_cfp);
+#endif
 
     vm_pop_frame(th);