share :cause variable

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63431 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 1 deletions

diff --git a/error.c b/error.c
index 85d9581689..a18583fad4 100644
--- a/error.c
+++ b/error.c
@@ -886,7 +886,9 @@ VALUE rb_eSystemCallError;
 VALUE rb_mErrno;
 static VALUE rb_eNOERROR;
 
-static ID id_cause, id_message, id_backtrace;
+ID ruby_static_id_cause;
+#define id_cause ruby_static_id_cause
+static ID id_message, id_backtrace;
 static ID id_name, id_key, id_args, id_Errno, id_errno, id_i_path;
 static ID id_receiver, id_recv, id_iseq, id_local_variables;
 static ID id_private_call_p, id_top, id_bottom;