thread_free

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/v1_1r@132 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/eval.c b/eval.c
index 5f053ab313..8a4e709d25 100644
--- a/eval.c
+++ b/eval.c
@@ -5075,7 +5075,7 @@ thread_free(th)
 {
     if (th->stk_ptr) free(th->stk_ptr);
     th->stk_ptr = 0;
-    free(th);
+    if (th != main_thread) free(th);
 }
 
 static thread_t