https://git.ruby-lang.org/ruby.git/commit/?id=d2033d0f06

From d2033d0f06f6962031c51187c73e6bec8cae6e9b Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 24 May 2022 12:17:19 +0900
Subject: [WASM] System initialization has no stack rewinding code to Asyncify

---
 main.c | 28 +++++++++++++---------------
 1 file changed, 13 insertions(+), 15 deletions(-)

diff --git a/main.c b/main.c
index 5cffa24cc8..e76228713f 100644
--- a/main.c
+++ b/main.c
@@ -32,6 +32,19 @@ https://github.com/ruby/ruby/blob/trunk/main.c#L32
 
 static int
 rb_main(int argc, char **argv)
+{
+    RUBY_INIT_STACK;
+    ruby_init();
+    return ruby_run_node(ruby_options(argc, argv));
+}
+
+#if defined(__wasm__) && !defined(__EMSCRIPTEN__)
+int rb_wasm_rt_start(int (main)(int argc, char **argv), int argc, char **argv);
+#define rb_main(argc, argv) rb_wasm_rt_start(rb_main, argc, argv)
+#endif
+
+int
+main(int argc, char **argv)
 {
 #ifdef RUBY_DEBUG_ENV
     ruby_set_debug_option(getenv("RUBY_DEBUG"));
@@ -41,20 +54,5 @@ rb_main(int argc, char **argv) https://github.com/ruby/ruby/blob/trunk/main.c#L54
 #endif
 
     ruby_sysinit(&argc, &argv);
-    {
-	RUBY_INIT_STACK;
-	ruby_init();
-	return ruby_run_node(ruby_options(argc, argv));
-    }
-}
-
-int
-main(int argc, char **argv)
-{
-#if defined(__wasm__) && !defined(__EMSCRIPTEN__)
-    int rb_wasm_rt_start(int (main)(int argc, char **argv), int argc, char **argv);
-    return rb_wasm_rt_start(rb_main, argc, argv);
-#else
     return rb_main(argc, argv);
-#endif
 }
-- 
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