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Issue #1521: on 64bit platforms, str.decode fails on very long strings.

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The t# and w# formats were not correctly handled.

Will backport.
This commit is contained in:
Amaury Forgeot d'Arc 2007-11-30 20:51:40 +00:00
parent be49a90eb3
commit dafd32b730
3 changed files with 15 additions and 7 deletions
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10
Lib/test/test_bigmem.py
View file

@ -65,13 +65,15 @@ def test_count(self, size):
self.assertEquals(s.count('i'), 1)
self.assertEquals(s.count('j'), 0)
@bigmemtest(minsize=0, memuse=1)
@bigmemtest(minsize=_2G + 2, memuse=3)
def test_decode(self, size):
pass
s = '.' * size
self.assertEquals(len(s.decode('utf-8')), size)
@bigmemtest(minsize=0, memuse=1)
@bigmemtest(minsize=_2G + 2, memuse=3)
def test_encode(self, size):
pass
s = u'.' * size
self.assertEquals(len(s.encode('utf-8')), size)
@bigmemtest(minsize=_2G, memuse=2)
def test_endswith(self, size):

5
Misc/NEWS
View file

@ -12,6 +12,11 @@ What's New in Python 2.6 alpha 1?
Core and builtins
-----------------
- Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t# of w#
format code incorrectly truncated the length to an int, even when
PY_SSIZE_T_CLEAN is set. The str.decode method used to return incorrect
results with huge strings.
- Issue #1402: Fix a crash on exit, when another thread is still running, and
if the deallocation of its frames somehow calls the PyGILState_Ensure() /
PyGILState_Release() functions.

7
Python/getargs.c
View file

@ -894,7 +894,8 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
char **buffer;
const char *encoding;
PyObject *s;
int size, recode_strings;
Py_ssize_t size;
int recode_strings;
/* Get 'e' parameter: the encoding name */
encoding = (const char *)va_arg(*p_va, const char *);
@ -1144,7 +1145,7 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
case 'w': { /* memory buffer, read-write access */
void **p = va_arg(*p_va, void **);
PyBufferProcs *pb = arg->ob_type->tp_as_buffer;
int count;
Py_ssize_t count;
if (pb == NULL ||
pb->bf_getwritebuffer == NULL ||
@ -1166,7 +1167,7 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
case 't': { /* 8-bit character buffer, read-only access */
char **p = va_arg(*p_va, char **);
PyBufferProcs *pb = arg->ob_type->tp_as_buffer;
int count;
Py_ssize_t count;
if (*format++ != '#')
return converterr(