vm_insnhelper.c: raise ruby_error_sysstack_gc

* vm_insnhelper.c (rb_threadptr_stack_overflow): rb_fatal is not
  available during GC.  raise the preallocated fatal error.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59618 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/vm_core.h b/vm_core.h
index 5fc7b2b3ba..861cae0018 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -455,6 +455,7 @@ enum ruby_special_exceptions {
     ruby_error_reenter,
     ruby_error_nomemory,
     ruby_error_sysstack,
+    ruby_error_sysstack_gc,
     ruby_error_stream_closed,
     ruby_special_error_count
 };