* bignum.c (BIGZEROP): macro to determine if x is a bignum zero.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@3653 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/eval.c b/eval.c
index 5ffcdb04c..c2fdd158d 100644
--- a/eval.c
+++ b/eval.c
@@ -5083,7 +5083,7 @@ backtrace(lev)
 {
     struct FRAME *frame = ruby_frame;
     char buf[BUFSIZ];
-    VALUE ary;
+    volatile VALUE ary;
     NODE *n;
 
     ary = rb_ary_new();