--- Begin Message ---
Package: python2.3-pyrex
Version: 0.9.3-1
Severity: normal
Hi,
Pyrex produces C code that is illegal. Specifically, it uses a whole
slew of reserved identifiers - all identifiers beginning __ are
reserved (C99 section 7.1.3, IIRC), so to use them as pyrex does is
undefined behaviour.
Using the example from the pyrex website:
def primes(int kmax):
cdef int n, k, i
cdef int p[1000]
result = []
if kmax > 1000:
kmax = 1000
k = 0
n = 2
while k < kmax:
i = 0
while i < k and n % p[i] <> 0:
i = i + 1
if i == k:
p[k] = n
k = k + 1
result.append(n)
n = n + 1
return result
Gives the following .c:
/* Generated by Pyrex 0.9.3 on Sun Feb 11 19:31:33 2007 */
#include "Python.h"
#include "structmember.h"
#ifndef PY_LONG_LONG
#define PY_LONG_LONG LONG_LONG
#endif
typedef struct {PyObject **p; char *s;} __Pyx_InternTabEntry; /*proto*/
typedef struct {PyObject **p; char *s; long n;} __Pyx_StringTabEntry; /*proto*/
static PyObject *__Pyx_UnpackItem(PyObject *, int); /*proto*/
static int __Pyx_EndUnpack(PyObject *, int); /*proto*/
static int __Pyx_PrintItem(PyObject *); /*proto*/
static int __Pyx_PrintNewline(void); /*proto*/
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb);
/*proto*/
static void __Pyx_ReRaise(void); /*proto*/
static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list); /*proto*/
static PyObject *__Pyx_GetExcValue(void); /*proto*/
static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int
none_allowed, char *name); /*proto*/
static int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type); /*proto*/
static int __Pyx_GetStarArgs(PyObject **args, PyObject **kwds, char
*kwd_list[], int nargs, PyObject **args2, PyObject **kwds2); /*proto*/
static void __Pyx_WriteUnraisable(char *name); /*proto*/
static void __Pyx_AddTraceback(char *funcname); /*proto*/
static PyTypeObject *__Pyx_ImportType(char *module_name, char *class_name, long
size); /*proto*/
static int __Pyx_SetVtable(PyObject *dict, void *vtable); /*proto*/
static int __Pyx_GetVtable(PyObject *dict, void *vtabptr); /*proto*/
static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject
*name, char *modname); /*proto*/
static int __Pyx_InternStrings(__Pyx_InternTabEntry *t); /*proto*/
static int __Pyx_InitStrings(__Pyx_StringTabEntry *t); /*proto*/
static PyObject *__Pyx_GetName(PyObject *dict, PyObject *name); /*proto*/
static PyObject *__pyx_m;
static PyObject *__pyx_b;
static int __pyx_lineno;
static char *__pyx_filename;
staticforward char **__pyx_f;
/* Declarations from test */
/* Implementation of test */
static PyObject *__pyx_n_primes;
static PyObject *__pyx_n_append;
static PyObject *__pyx_f_4test_primes(PyObject *__pyx_self, PyObject
*__pyx_args, PyObject *__pyx_kwds); /*proto*/
static PyObject *__pyx_f_4test_primes(PyObject *__pyx_self, PyObject
*__pyx_args, PyObject *__pyx_kwds) {
int __pyx_v_kmax;
int __pyx_v_n;
int __pyx_v_k;
int __pyx_v_i;
int (__pyx_v_p[1000]);
PyObject *__pyx_v_result;
PyObject *__pyx_r;
PyObject *__pyx_1 = 0;
int __pyx_2;
PyObject *__pyx_3 = 0;
PyObject *__pyx_4 = 0;
static char *__pyx_argnames[] = {"kmax",0};
if (!PyArg_ParseTupleAndKeywords(__pyx_args, __pyx_kwds, "i", __pyx_argnames,
&__pyx_v_kmax)) return 0;
__pyx_v_result = Py_None; Py_INCREF(__pyx_v_result);
/* "/home/matthew/programming/python/pyrex/test.pyx":8 */
__pyx_1 = PyList_New(0); if (!__pyx_1) {__pyx_filename = __pyx_f[0];
__pyx_lineno = 8; goto __pyx_L1;}
Py_DECREF(__pyx_v_result);
__pyx_v_result = __pyx_1;
__pyx_1 = 0;
/* "/home/matthew/programming/python/pyrex/test.pyx":9 */
__pyx_2 = (__pyx_v_kmax > 1000);
if (__pyx_2) {
/* "/home/matthew/programming/python/pyrex/test.pyx":10 */
__pyx_v_kmax = 1000;
goto __pyx_L2;
}
__pyx_L2:;
/* "/home/matthew/programming/python/pyrex/test.pyx":11 */
__pyx_v_k = 0;
/* "/home/matthew/programming/python/pyrex/test.pyx":12 */
__pyx_v_n = 2;
/* "/home/matthew/programming/python/pyrex/test.pyx":13 */
while (1) {
__pyx_L3:;
__pyx_2 = (__pyx_v_k < __pyx_v_kmax);
if (!__pyx_2) break;
/* "/home/matthew/programming/python/pyrex/test.pyx":14 */
__pyx_v_i = 0;
/* "/home/matthew/programming/python/pyrex/test.pyx":15 */
while (1) {
__pyx_L5:;
__pyx_2 = (__pyx_v_i < __pyx_v_k);
if (__pyx_2) {
__pyx_2 = ((__pyx_v_n % (__pyx_v_p[__pyx_v_i])) != 0);
}
if (!__pyx_2) break;
/* "/home/matthew/programming/python/pyrex/test.pyx":16 */
__pyx_v_i = (__pyx_v_i + 1);
}
__pyx_L6:;
/* "/home/matthew/programming/python/pyrex/test.pyx":17 */
__pyx_2 = (__pyx_v_i == __pyx_v_k);
if (__pyx_2) {
/* "/home/matthew/programming/python/pyrex/test.pyx":18 */
(__pyx_v_p[__pyx_v_k]) = __pyx_v_n;
/* "/home/matthew/programming/python/pyrex/test.pyx":19 */
__pyx_v_k = (__pyx_v_k + 1);
/* "/home/matthew/programming/python/pyrex/test.pyx":20 */
__pyx_1 = PyObject_GetAttr(__pyx_v_result, __pyx_n_append); if (!__pyx_1)
{__pyx_filename = __pyx_f[0]; __pyx_lineno = 20; goto __pyx_L1;}
__pyx_3 = PyInt_FromLong(__pyx_v_n); if (!__pyx_3) {__pyx_filename =
__pyx_f[0]; __pyx_lineno = 20; goto __pyx_L1;}
__pyx_4 = PyTuple_New(1); if (!__pyx_4) {__pyx_filename = __pyx_f[0];
__pyx_lineno = 20; goto __pyx_L1;}
PyTuple_SET_ITEM(__pyx_4, 0, __pyx_3);
__pyx_3 = 0;
__pyx_3 = PyObject_CallObject(__pyx_1, __pyx_4); if (!__pyx_3)
{__pyx_filename = __pyx_f[0]; __pyx_lineno = 20; goto __pyx_L1;}
Py_DECREF(__pyx_1); __pyx_1 = 0;
Py_DECREF(__pyx_4); __pyx_4 = 0;
Py_DECREF(__pyx_3); __pyx_3 = 0;
goto __pyx_L7;
}
__pyx_L7:;
/* "/home/matthew/programming/python/pyrex/test.pyx":21 */
__pyx_v_n = (__pyx_v_n + 1);
}
__pyx_L4:;
/* "/home/matthew/programming/python/pyrex/test.pyx":22 */
Py_INCREF(__pyx_v_result);
__pyx_r = __pyx_v_result;
goto __pyx_L0;
__pyx_r = Py_None; Py_INCREF(__pyx_r);
goto __pyx_L0;
__pyx_L1:;
Py_XDECREF(__pyx_1);
Py_XDECREF(__pyx_3);
Py_XDECREF(__pyx_4);
__Pyx_AddTraceback("test.primes");
__pyx_r = 0;
__pyx_L0:;
Py_DECREF(__pyx_v_result);
return __pyx_r;
}
static __Pyx_InternTabEntry __pyx_intern_tab[] = {
{&__pyx_n_append, "append"},
{&__pyx_n_primes, "primes"},
{0, 0}
};
static struct PyMethodDef __pyx_methods[] = {
{"primes", (PyCFunction)__pyx_f_4test_primes, METH_VARARGS|METH_KEYWORDS, 0},
{0, 0, 0, 0}
};
DL_EXPORT(void) inittest(void); /*proto*/
DL_EXPORT(void) inittest(void) {
__pyx_m = Py_InitModule4("test", __pyx_methods, 0, 0, PYTHON_API_VERSION);
if (!__pyx_m) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 5; goto __pyx_L1;};
__pyx_b = PyImport_AddModule("__builtin__");
if (!__pyx_b) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 5; goto __pyx_L1;};
if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0)
{__pyx_filename = __pyx_f[0]; __pyx_lineno = 5; goto __pyx_L1;};
if (__Pyx_InternStrings(__pyx_intern_tab) < 0) {__pyx_filename = __pyx_f[0];
__pyx_lineno = 5; goto __pyx_L1;};
/* "/home/matthew/programming/python/pyrex/test.pyx":5 */
return;
__pyx_L1:;
__Pyx_AddTraceback("test");
}
static char *__pyx_filenames[] = {
"test.pyx",
};
statichere char **__pyx_f = __pyx_filenames;
/* Runtime support code */
static int __Pyx_InternStrings(__Pyx_InternTabEntry *t) {
while (t->p) {
*t->p = PyString_InternFromString(t->s);
if (!*t->p)
return -1;
++t;
}
return 0;
}
#include "compile.h"
#include "frameobject.h"
#include "traceback.h"
static void __Pyx_AddTraceback(char *funcname) {
PyObject *py_srcfile = 0;
PyObject *py_funcname = 0;
PyObject *py_globals = 0;
PyObject *empty_tuple = 0;
PyObject *empty_string = 0;
PyCodeObject *py_code = 0;
PyFrameObject *py_frame = 0;
py_srcfile = PyString_FromString(__pyx_filename);
if (!py_srcfile) goto bad;
py_funcname = PyString_FromString(funcname);
if (!py_funcname) goto bad;
py_globals = PyModule_GetDict(__pyx_m);
if (!py_globals) goto bad;
empty_tuple = PyTuple_New(0);
if (!empty_tuple) goto bad;
empty_string = PyString_FromString("");
if (!empty_string) goto bad;
py_code = PyCode_New(
0, /*int argcount,*/
0, /*int nlocals,*/
0, /*int stacksize,*/
0, /*int flags,*/
empty_string, /*PyObject *code,*/
empty_tuple, /*PyObject *consts,*/
empty_tuple, /*PyObject *names,*/
empty_tuple, /*PyObject *varnames,*/
empty_tuple, /*PyObject *freevars,*/
empty_tuple, /*PyObject *cellvars,*/
py_srcfile, /*PyObject *filename,*/
py_funcname, /*PyObject *name,*/
__pyx_lineno, /*int firstlineno,*/
empty_string /*PyObject *lnotab*/
);
if (!py_code) goto bad;
py_frame = PyFrame_New(
PyThreadState_Get(), /*PyThreadState *tstate,*/
py_code, /*PyCodeObject *code,*/
py_globals, /*PyObject *globals,*/
0 /*PyObject *locals*/
);
if (!py_frame) goto bad;
py_frame->f_lineno = __pyx_lineno;
PyTraceBack_Here(py_frame);
bad:
Py_XDECREF(py_srcfile);
Py_XDECREF(py_funcname);
Py_XDECREF(empty_tuple);
Py_XDECREF(empty_string);
Py_XDECREF(py_code);
Py_XDECREF(py_frame);
}
all those __pyx and __Pyx identifiers are Just Plain Wrong.
Regards,
Matthew
-- System Information:
Debian Release: 3.1
Architecture: i386 (i686)
Kernel: Linux 2.4.32
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages python2.3-pyrex depends on:
ii python2.3 2.3.5-3sarge2 An interactive high-level object-o
-- no debconf information
--- End Message ---
