Fix keyword argument separation issues in Thread.new

1 files changed, 1 insertions, 0 deletions

diff --git a/vm_core.h b/vm_core.h
index 4c233fa27f..f1e7443926 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -951,6 +951,7 @@ typedef struct rb_thread_struct {
         struct {
             VALUE proc;
             VALUE args;
+            int kw_splat;
         } proc;
         struct {
             VALUE (*func)(void *);