Segmentation fault on GC

[ksss]

The below code failed.

Thread.new { GC.start }
# Assertion failed: ((obj)->tt != MRB_TT_FREE), function mrb_gc_mark, mruby/src/gc.c, line 676

I dived into sea of the codes...
But I didn't resolve this issue.

Maybe main thread was calling mrb_close.
But sub thread GC mark anything main thread object. (Maybe from mrb->c->stack?)
It was method object (RProc *) in my env. And already freed.
mrb_thread_context_free have not yet called when failed.

Is this an unavoidable issue?

Of cause below code worked.

Thread.new { GC.start }.join

mruby: 08a1dd2ac89333bd928a3300f712d1a7fb57e8ff
mruby-thread: 0e2e003

[mattn]

How about this?

diff --git a/src/mrb_thread.c b/src/mrb_thread.c
index 7d13e79..b8981d6 100644
--- a/src/mrb_thread.c
+++ b/src/mrb_thread.c
@@ -38,6 +38,7 @@ static void
 mrb_thread_context_free(mrb_state *mrb, void *p) {
   if (p) {
     mrb_thread_context* context = (mrb_thread_context*) p;
+    context->proc = NULL;
     if (context->mrb && context->mrb != mrb) mrb_close(context->mrb);
     pthread_kill(context->thread, SIGINT);
     if (context->argv) free(context->argv);

[ksss]

No, Didn't fix, mrb_thread_context_free have not yet called when failed.