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/Objects/stringobject.c b/Objects/stringobject.c
index 1d5277c..1bbd201 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -3311,6 +3311,12 @@
PyErr_SetString(PyExc_TypeError, "int argument required");
return -1;
}
+ if (x < 0 && type != 'd' && type != 'i') {
+ if (PyErr_Warn(PyExc_DeprecationWarning,
+ "%u/%o/%x/%X of negative int will return "
+ "a signed string in Python 2.4 and up") < 0)
+ return -1;
+ }
if (prec < 0)
prec = 1;