From 96eec4f8a6721bc909415fd3c813757cc50eab7f Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pfalcon@users.sourceforge.net>
Date: Mon, 31 Mar 2014 02:16:25 +0300
Subject: [PATCH] compile: Don't try to constant-fold division by zero.
The way it is, just crashes app. And optimizing to
"raise ZeroDivisionError" is probably too much.
---
py/compile.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/py/compile.c b/py/compile.c
index c6c6752d1..89ca380aa 100644
--- a/py/compile.c
+++ b/py/compile.c
@@ -145,7 +145,9 @@ mp_parse_node_t fold_constants(mp_parse_node_t pn) {
} else if (MP_PARSE_NODE_IS_TOKEN_KIND(pns->nodes[1], MP_TOKEN_OP_PERCENT)) {
pn = mp_parse_node_new_leaf(MP_PARSE_NODE_SMALL_INT, python_modulo(arg0, arg1));
} else if (MP_PARSE_NODE_IS_TOKEN_KIND(pns->nodes[1], MP_TOKEN_OP_DBL_SLASH)) {
- pn = mp_parse_node_new_leaf(MP_PARSE_NODE_SMALL_INT, python_floor_divide(arg0, arg1));
+ if (arg1 != 0) {
+ pn = mp_parse_node_new_leaf(MP_PARSE_NODE_SMALL_INT, python_floor_divide(arg0, arg1));
+ }
} else {
// shouldn't happen
assert(0);
--
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