From 4fc69ce3bc8f2ccac53a253ad02614380df491d4 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Tue, 14 Mar 2023 19:45:46 +0900
Subject: [PATCH] Revert "mruby/throw.h: do not use __builtin_setjmp for GCC;
 close #5950"

This reverts commit 9cf49d08b404ef45eaa021f91162e673f88c4366.

This change caused flaky tests on MinGW. I now remember it was introduced
for MINGW64 to address #5133. Sorry.
---
 include/mruby/throw.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/mruby/throw.h b/include/mruby/throw.h
index fbe66e95e..547eea12c 100644
--- a/include/mruby/throw.h
+++ b/include/mruby/throw.h
@@ -33,6 +33,9 @@ typedef mrb_int mrb_jmpbuf_impl;
 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
 #define MRB_SETJMP _setjmp
 #define MRB_LONGJMP _longjmp
+#elif defined(__MINGW64__) && defined(__GNUC__) && __GNUC__ >= 4
+#define MRB_SETJMP __builtin_setjmp
+#define MRB_LONGJMP __builtin_longjmp
 #else
 #define MRB_SETJMP setjmp
 #define MRB_LONGJMP longjmp