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.
diff --git a/Python/compile.c b/Python/compile.c
index 79756ea..e547e03 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -1154,8 +1154,16 @@
#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') {