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Implement stage B0 of PEP 237: add warnings for operations that

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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.
This commit is contained in:
Guido van Rossum 2002-08-11 04:24:12 +00:00
parent d92ae840e9
commit 078151da90
4 changed files with 50 additions and 4 deletions
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10
Python/compile.c
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@ -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') {