Fix USE_MN_THREADS=0 builds on macOS

This was recently broken.
Merged: https://github.com/ruby/ruby/pull/13258
2025-05-05 15:00:02 +02:00 · 2025-05-05 15:00:02 +02:00 · 3a2e56e685 · 2025-05-05 13:34:47 +00:00
commit 3a2e56e685
parent a3af4e905f
1 changed files with 4 additions and 0 deletions
--- a/vm_dump.c
+++ b/vm_dump.c
@ -515,9 +515,13 @@ rb_vmdebug_thread_dump_state(FILE *errout, VALUE self)
 static bool
 is_coroutine_start(unw_word_t ip)
 {
+#if USE_MN_THREADS
    struct coroutine_context;
    extern void ruby_coroutine_start(struct coroutine_context *, struct coroutine_context *);
    return ((void *)(ip) == (void *)ruby_coroutine_start);
+#else
+    return false;
+#endif
 }
 #  endif