From 73237c54b40c345813fa6b7831a32b10fa4671b5 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Mon, 5 May 1997 20:53:25 +0000
Subject: [PATCH] Only use PyCode_Addr2Line to get tb_lineno when
 Py_OptimizeFlag is set.

---
 Python/traceback.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Python/traceback.c b/Python/traceback.c
index 9633db15d96..14e49052ee1 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -243,8 +243,9 @@ tb_printinternal(tb, f, limit)
 	}
 	while (tb != NULL && !PyOS_InterruptOccurred()) {
 		if (depth <= limit) {
-			tb->tb_lineno = PyCode_Addr2Line(tb->tb_frame->f_code,
-							 tb->tb_lasti);
+			if (Py_OptimizeFlag)
+				tb->tb_lineno = PyCode_Addr2Line(
+					tb->tb_frame->f_code, tb->tb_lasti);
 			tb_displayline(f,
 			    PyString_AsString(
 				    tb->tb_frame->f_code->co_filename),