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| author | Martin v. Löwis <martin@v.loewis.de> | 2006-02-17 15:57:41 (GMT) |
|---|---|---|
| committer | Martin v. Löwis <martin@v.loewis.de> | 2006-02-17 15:57:41 (GMT) |
| commit | dde99d2633d7d744730d4464521e936bf1b6b411 (patch) | |
| tree | 40ccf7a85cbd51963dba18f4dfe9aafaf7a00617 /Python/ceval.c | |
| parent | 5c97c798d25d24e03f28db5c2b90d6e08a355346 (diff) | |
| download | cpython-dde99d2633d7d744730d4464521e936bf1b6b411.zip cpython-dde99d2633d7d744730d4464521e936bf1b6b411.tar.gz cpython-dde99d2633d7d744730d4464521e936bf1b6b411.tar.bz2 | |
Remove size constraints in SLICE opcodes.
Diffstat (limited to 'Python/ceval.c')
| -rw-r--r-- | Python/ceval.c | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/Python/ceval.c b/Python/ceval.c index 0f2b173..131f5a7 100644 --- a/Python/ceval.c +++ b/Python/ceval.c @@ -3851,8 +3851,9 @@ ext_do_call(PyObject *func, PyObject ***pp_stack, int flags, int na, int nk) } /* Extract a slice index from a PyInt or PyLong, and store in *pi. - Silently reduce values larger than INT_MAX to INT_MAX, and silently - boost values less than -INT_MAX to 0. Return 0 on error, 1 on success. + Silently reduce values larger than PY_SSIZE_T_MAX to PY_SSIZE_T_MAX, + and silently boost values less than -PY_SSIZE_T_MAX to 0. + Return 0 on error, 1 on success. */ /* Note: If v is NULL, return success without storing into *pi. This is because_PyEval_SliceIndex() is called by apply_slice(), which can be @@ -3862,11 +3863,11 @@ int _PyEval_SliceIndex(PyObject *v, Py_ssize_t *pi) { if (v != NULL) { - long x; + Py_ssize_t x; if (PyInt_Check(v)) { x = PyInt_AsLong(v); } else if (PyLong_Check(v)) { - x = PyLong_AsLong(v); + x = PyInt_AsSsize_t(v); if (x==-1 && PyErr_Occurred()) { PyObject *long_zero; int cmp; @@ -3883,8 +3884,8 @@ _PyEval_SliceIndex(PyObject *v, Py_ssize_t *pi) /* It's an overflow error, so we need to check the sign of the long integer, - set the value to INT_MAX or -INT_MAX, - and clear the error. */ + set the value to PY_SSIZE_T_MAX or + -PY_SSIZE_T_MAX, and clear the error. */ /* Create a long integer with a value of 0 */ long_zero = PyLong_FromLong(0L); @@ -3898,21 +3899,15 @@ _PyEval_SliceIndex(PyObject *v, Py_ssize_t *pi) if (cmp < 0) return 0; else if (cmp) - x = INT_MAX; + x = PY_SSIZE_T_MAX; else - x = -INT_MAX; + x = -PY_SSIZE_T_MAX; } } else { PyErr_SetString(PyExc_TypeError, "slice indices must be integers"); return 0; } - /* Truncate -- very long indices are truncated anyway */ - /* XXX truncate by ssize maximum */ - if (x > INT_MAX) - x = INT_MAX; - else if (x < -INT_MAX) - x = -INT_MAX; *pi = x; } return 1; @@ -3928,7 +3923,7 @@ apply_slice(PyObject *u, PyObject *v, PyObject *w) /* return u[v:w] */ PySequenceMethods *sq = tp->tp_as_sequence; if (sq && sq->sq_slice && ISINT(v) && ISINT(w)) { - Py_ssize_t ilow = 0, ihigh = INT_MAX; + Py_ssize_t ilow = 0, ihigh = PY_SSIZE_T_MAX; if (!_PyEval_SliceIndex(v, &ilow)) return NULL; if (!_PyEval_SliceIndex(w, &ihigh)) @@ -3955,7 +3950,7 @@ assign_slice(PyObject *u, PyObject *v, PyObject *w, PyObject *x) PySequenceMethods *sq = tp->tp_as_sequence; if (sq && sq->sq_slice && ISINT(v) && ISINT(w)) { - Py_ssize_t ilow = 0, ihigh = INT_MAX; + Py_ssize_t ilow = 0, ihigh = PY_SSIZE_T_MAX; if (!_PyEval_SliceIndex(v, &ilow)) return -1; if (!_PyEval_SliceIndex(w, &ihigh)) |