From eebb8298b394b460c7dd4f645fe36bb19a4bfd3b Mon Sep 17 00:00:00 2001
From: Nick Gasson <nick@nickg.me.uk>
Date: Thu, 8 Jul 2021 15:57:02 +0800
Subject: [PATCH] Eval link signal

---
 src/eval.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/eval.c b/src/eval.c
index 06ee7074..56b01b51 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -1870,6 +1870,12 @@ static void eval_op_debug_out(int op, eval_state_t *state)
    printf("DEBUG: r%d val=%"PRIi64"\n", reg, value->integer);
 }
 
+static void eval_op_link_signal(int op, eval_state_t *state)
+{
+   value_t *result = eval_get_reg(vcode_get_result(op), state);
+   result->kind = VALUE_INVALID;
+}
+
 static void eval_vcode(eval_state_t *state)
 {
    state->op = 0;
@@ -2131,6 +2137,10 @@ static void eval_vcode(eval_state_t *state)
          eval_op_debug_out(state->op, state);
          break;
 
+      case VCODE_OP_LINK_SIGNAL:
+         eval_op_link_signal(i, state);
+         break;
+
       default:
          vcode_dump();
          fatal("cannot evaluate vcode op %s",
-- 
2.39.2