From 4a3cf191f477f81cd14a28b2f7fdd3c7d9cfbd13 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Wed, 1 Jul 2009 23:45:19 +0000
Subject: small optimization: avoid popping the current block until we have to

---
 Python/ceval.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Python/ceval.c b/Python/ceval.c
index f80778c..ea4bd05 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -2806,20 +2806,20 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
 
 fast_block_end:
 		while (why != WHY_NOT && f->f_iblock > 0) {
-			PyTryBlock *b = PyFrame_BlockPop(f);
+			/* Peek at the current block. */
+			PyTryBlock *b = &f->f_blockstack[f->f_iblock - 1];
 
 			assert(why != WHY_YIELD);
 			if (b->b_type == SETUP_LOOP && why == WHY_CONTINUE) {
-				/* For a continue inside a try block,
-				   don't pop the block for the loop. */
-				PyFrame_BlockSetup(f, b->b_type, b->b_handler,
-						   b->b_level);
 				why = WHY_NOT;
 				JUMPTO(PyInt_AS_LONG(retval));
 				Py_DECREF(retval);
 				break;
 			}
 
+			/* Now we have to pop the block. */
+			f->f_iblock--;
+
 			while (STACK_LEVEL() > b->b_level) {
 				v = POP();
 				Py_XDECREF(v);
-- 
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