From 568309b25a82188bb97d202563ab27e9e248956f Mon Sep 17 00:00:00 2001
From: dearblue <dearblue@users.osdn.me>
Date: Mon, 4 Dec 2023 21:51:02 +0900
Subject: [PATCH] Propagating exceptions to the caller of `Fiber#resume`

Need to return control from `mrb_vm_exec()` to the caller if `Fiber#resume` was done from C.
---
 src/vm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/vm.c b/src/vm.c
index 6e776f9de..50c7b0b08 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -2244,7 +2244,10 @@ RETRY_TRY_BLOCK:
             mrb->c = c->prev;
             if (!mrb->c) mrb->c = mrb->root_c;
             else c->prev = NULL;
-            goto L_RAISE;
+            if (!c->vmexec) goto L_RAISE;
+            mrb->jmp = prev_jmp;
+            if (!prev_jmp) return mrb_obj_value(mrb->exc);
+            MRB_THROW(prev_jmp);
           }
         }