From d7edd3dbc1529f3334ba1da01e59c93056fb263d Mon Sep 17 00:00:00 2001
From: Hendrik <Asmod4n@users.noreply.github.com>
Date: Sun, 10 Aug 2025 09:21:38 +0200
Subject: [PATCH] fix bigint on raspberry pi

this fixes an issue where base can be out of range on a raspberry pi.
---
 src/vm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/vm.c b/src/vm.c
index 95eec8041..2772b09b7 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -1718,7 +1718,7 @@ RETRY_TRY_BLOCK:
 #ifdef MRB_USE_BIGINT
         {
           const char *s = irep->pool[b].u.str;
-          regs[a] = mrb_bint_new_str(mrb, s+2, (uint8_t)s[0], s[1]);
+          regs[a] = mrb_bint_new_str(mrb, s+2, (uint8_t)s[0], (int8_t)s[1]);
         }
         break;
 #else