From 078151da901bebce6eb232d958fbbb1e5ced4399 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Sun, 11 Aug 2002 04:24:12 +0000
Subject: Implement stage B0 of PEP 237: add warnings for operations that
 currently return inconsistent results for ints and longs; in particular:
 hex/oct/%u/%o/%x/%X of negative short ints, and x<<n that either loses bits
 or changes sign.  (No warnings for repr() of a long, though that will also
 change to lose the trailing 'L' eventually.)

This introduces some warnings in the test suite; I'll take care of
those later.
---
 Python/compile.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'Python/compile.c')

diff --git a/Python/compile.c b/Python/compile.c
index 79756eab0e..e547e03b26 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -1154,8 +1154,16 @@ parsenumber(struct compiling *co, char *s)
 #endif
 	if (*end == 'l' || *end == 'L')
 		return PyLong_FromString(s, (char **)0, 0);
-	if (s[0] == '0')
+	if (s[0] == '0') {
 		x = (long) PyOS_strtoul(s, &end, 0);
+		if (x < 0 && errno == 0) {
+			if (PyErr_Warn(PyExc_DeprecationWarning,
+				       "hex/oct constants > sys.maxint "
+				       "will return positive values "
+				       "in Python 2.4 and up") < 0)
+				return NULL;
+		}
+	}
 	else
 		x = PyOS_strtol(s, &end, 0);
 	if (*end == '\0') {
-- 
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