From 79d90e73511dc9dfda7926802b624d6fec22fe12 Mon Sep 17 00:00:00 2001
From: Peter Zhu <peter@peterzhu.ca>
Date: Wed, 11 Dec 2024 14:40:40 -0500
Subject: Call rb_bug_without_die when ASAN error reported

This will give us the Ruby stack trace when an ASAN error is reported.
---
 gc.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'gc.c')

diff --git a/gc.c b/gc.c
index 774f82bb5b..f4322417b6 100644
--- a/gc.c
+++ b/gc.c
@@ -936,6 +936,14 @@ ruby_modular_gc_init(void)
 # define rb_gc_impl_copy_attributes rb_gc_functions.copy_attributes
 #endif
 
+#ifdef RUBY_ASAN_ENABLED
+static void
+asan_death_callback(void)
+{
+    rb_bug_without_die("ASAN error");
+}
+#endif
+
 static VALUE initial_stress = Qfalse;
 
 void *
@@ -951,6 +959,10 @@ rb_objspace_alloc(void)
     rb_gc_impl_objspace_init(objspace);
     rb_gc_impl_stress_set(objspace, initial_stress);
 
+#ifdef RUBY_ASAN_ENABLED
+    __sanitizer_set_death_callback(asan_death_callback);
+#endif
+
     return objspace;
 }
 
-- 
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