From c9396a35203fb99e8e6115b36042b2bec116b088 Mon Sep 17 00:00:00 2001
From: Sutou Kouhei <kou@clear-code.com>
Date: Wed, 22 Dec 2021 08:59:04 +0900
Subject: Show the target Proc on Ractor::IsolationError

It's useful for debug.
---
 vm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'vm.c')

diff --git a/vm.c b/vm.c
index 287fe2547d..8ce8b279d4 100644
--- a/vm.c
+++ b/vm.c
@@ -1182,7 +1182,9 @@ rb_proc_ractor_make_shareable(VALUE self)
         if (proc->block.type != block_type_iseq) rb_raise(rb_eRuntimeError, "not supported yet");
 
         if (!rb_ractor_shareable_p(vm_block_self(&proc->block))) {
-            rb_raise(rb_eRactorIsolationError, "Proc's self is not shareable");
+            rb_raise(rb_eRactorIsolationError,
+                     "Proc's self is not shareable: %" PRIsVALUE,
+                     self);
         }
 
         VALUE read_only_variables = Qfalse;
-- 
cgit v1.2.3