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Issue #18520: Add a new PyStructSequence_InitType2() function, same than 

PyStructSequence_InitType() except that it has a return value (0 on success,
-1 on error).

 * PyStructSequence_InitType2() now raises MemoryError on memory allocation failure
 * Fix also some calls to PyDict_SetItemString(): handle error
This commit is contained in:
Victor Stinner 2013-07-22 22:24:54 +02:00
parent 2a545099f7
commit 1c8f059019
17 changed files with 117 additions and 54 deletions
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2
Include/pythonrun.h
View File

@ -197,7 +197,7 @@ PyAPI_FUNC(void) _PyImport_Init(void);
PyAPI_FUNC(void) _PyExc_Init(PyObject * bltinmod);
PyAPI_FUNC(void) _PyImportHooks_Init(void);
PyAPI_FUNC(int) _PyFrame_Init(void);
PyAPI_FUNC(void) _PyFloat_Init(void);
PyAPI_FUNC(int) _PyFloat_Init(void);
PyAPI_FUNC(int) PyByteArray_Init(void);
PyAPI_FUNC(void) _PyRandom_Init(void);
#endif

2
Include/structseq.h
View File

@ -24,6 +24,8 @@ extern char* PyStructSequence_UnnamedField;
#ifndef Py_LIMITED_API
PyAPI_FUNC(void) PyStructSequence_InitType(PyTypeObject *type,
PyStructSequence_Desc *desc);
PyAPI_FUNC(int) PyStructSequence_InitType2(PyTypeObject *type,
PyStructSequence_Desc *desc);
#endif
PyAPI_FUNC(PyTypeObject*) PyStructSequence_NewType(PyStructSequence_Desc *desc);

4
Misc/NEWS
View File

@ -10,6 +10,10 @@ What's New in Python 3.4.0 Alpha 1?
Core and Builtins
-----------------
- Issue #18520: Add a new PyStructSequence_InitType2() function, same than
PyStructSequence_InitType() except that it has a return value (0 on success,
-1 on error).
- Issue #15905: Fix theoretical buffer overflow in handling of sys.argv[0],
prefix and exec_prefix if the operation system does not obey MAXPATHLEN.

10
Modules/_lsprof.c
View File

@ -884,10 +884,12 @@ PyInit__lsprof(void)
PyDict_SetItemString(d, "Profiler", (PyObject *)&PyProfiler_Type);
if (!initialized) {
PyStructSequence_InitType(&StatsEntryType,
&profiler_entry_desc);
PyStructSequence_InitType(&StatsSubEntryType,
&profiler_subentry_desc);
if (PyStructSequence_InitType2(&StatsEntryType,
&profiler_entry_desc) < 0)
return NULL;
if (PyStructSequence_InitType2(&StatsSubEntryType,
&profiler_subentry_desc) < 0)
return NULL;
}
Py_INCREF((PyObject*) &StatsEntryType);
Py_INCREF((PyObject*) &StatsSubEntryType);

11
Modules/grpmodule.c
View File

@ -210,9 +210,14 @@ PyInit_grp(void)
if (m == NULL)
return NULL;
d = PyModule_GetDict(m);
if (!initialized)
PyStructSequence_InitType(&StructGrpType, &struct_group_type_desc);
PyDict_SetItemString(d, "struct_group", (PyObject *) &StructGrpType);
if (!initialized) {
if (PyStructSequence_InitType2(&StructGrpType,
&struct_group_type_desc) < 0)
return NULL;
}
if (PyDict_SetItemString(d, "struct_group",
(PyObject *)&StructGrpType) < 0)
return NULL;
initialized = 1;
return m;
}

24
Modules/posixmodule.c
View File

@ -11518,19 +11518,23 @@ INITFUNC(void)
if (!initialized) {
#if defined(HAVE_WAITID) && !defined(__APPLE__)
waitid_result_desc.name = MODNAME ".waitid_result";
PyStructSequence_InitType(&WaitidResultType, &waitid_result_desc);
if (PyStructSequence_InitType2(&WaitidResultType, &waitid_result_desc) < 0)
return NULL;
#endif
stat_result_desc.name = MODNAME ".stat_result";
stat_result_desc.fields[7].name = PyStructSequence_UnnamedField;
stat_result_desc.fields[8].name = PyStructSequence_UnnamedField;
stat_result_desc.fields[9].name = PyStructSequence_UnnamedField;
PyStructSequence_InitType(&StatResultType, &stat_result_desc);
if (PyStructSequence_InitType2(&StatResultType, &stat_result_desc) < 0)
return NULL;
structseq_new = StatResultType.tp_new;
StatResultType.tp_new = statresult_new;
statvfs_result_desc.name = MODNAME ".statvfs_result";
PyStructSequence_InitType(&StatVFSResultType, &statvfs_result_desc);
if (PyStructSequence_InitType2(&StatVFSResultType,
&statvfs_result_desc) < 0)
return NULL;
#ifdef NEED_TICKS_PER_SECOND
# if defined(HAVE_SYSCONF) && defined(_SC_CLK_TCK)
ticks_per_second = sysconf(_SC_CLK_TCK);
@ -11543,12 +11547,15 @@ INITFUNC(void)
#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER)
sched_param_desc.name = MODNAME ".sched_param";
PyStructSequence_InitType(&SchedParamType, &sched_param_desc);
if (PyStructSequence_InitType2(&SchedParamType, &sched_param_desc) < 0)
return NULL;
SchedParamType.tp_new = sched_param_new;
#endif
/* initialize TerminalSize_info */
PyStructSequence_InitType(&TerminalSizeType, &TerminalSize_desc);
if (PyStructSequence_InitType2(&TerminalSizeType,
&TerminalSize_desc) < 0)
return NULL;
}
#if defined(HAVE_WAITID) && !defined(__APPLE__)
Py_INCREF((PyObject*) &WaitidResultType);
@ -11566,11 +11573,13 @@ INITFUNC(void)
#endif
times_result_desc.name = MODNAME ".times_result";
PyStructSequence_InitType(&TimesResultType, &times_result_desc);
if (PyStructSequence_InitType2(&TimesResultType, &times_result_desc) < 0)
return NULL;
PyModule_AddObject(m, "times_result", (PyObject *)&TimesResultType);
uname_result_desc.name = MODNAME ".uname_result";
PyStructSequence_InitType(&UnameResultType, &uname_result_desc);
if (PyStructSequence_InitType2(&UnameResultType, &uname_result_desc) < 0)
return NULL;
PyModule_AddObject(m, "uname_result", (PyObject *)&UnameResultType);
#ifdef __APPLE__
@ -11648,7 +11657,6 @@ INITFUNC(void)
initialized = 1;
return m;
}
#ifdef __cplusplus

5
Modules/pwdmodule.c
View File

@ -216,8 +216,9 @@ PyInit_pwd(void)
return NULL;
if (!initialized) {
PyStructSequence_InitType(&StructPwdType,
&struct_pwd_type_desc);
if (PyStructSequence_InitType2(&StructPwdType,
&struct_pwd_type_desc) < 0)
return NULL;
initialized = 1;
}
Py_INCREF((PyObject *) &StructPwdType);

9
Modules/resource.c
View File

@ -263,9 +263,12 @@ PyInit_resource(void)
/* Add some symbolic constants to the module */
Py_INCREF(PyExc_OSError);
PyModule_AddObject(m, "error", PyExc_OSError);
if (!initialized)
PyStructSequence_InitType(&StructRUsageType,
&struct_rusage_desc);
if (!initialized) {
if (PyStructSequence_InitType2(&StructRUsageType,
&struct_rusage_desc) < 0)
return NULL;
}
Py_INCREF(&StructRUsageType);
PyModule_AddObject(m, "struct_rusage",
(PyObject*) &StructRUsageType);

7
Modules/signalmodule.c
View File

@ -978,9 +978,10 @@ PyInit_signal(void)
return NULL;
#if defined(HAVE_SIGWAITINFO) || defined(HAVE_SIGTIMEDWAIT)
if (!initialized)
PyStructSequence_InitType(&SiginfoType, &struct_siginfo_desc);
if (!initialized) {
if (PyStructSequence_InitType2(&SiginfoType, &struct_siginfo_desc) < 0)
return NULL;
}
Py_INCREF((PyObject*) &SiginfoType);
PyModule_AddObject(m, "struct_siginfo", (PyObject*) &SiginfoType);
initialized = 1;

8
Modules/spwdmodule.c
View File

@ -196,9 +196,11 @@ PyInit_spwd(void)
m=PyModule_Create(&spwdmodule);
if (m == NULL)
return NULL;
if (!initialized)
PyStructSequence_InitType(&StructSpwdType,
&struct_spwd_type_desc);
if (!initialized) {
if (PyStructSequence_InitType2(&StructSpwdType,
&struct_spwd_type_desc) < 0)
return NULL;
}
Py_INCREF((PyObject *) &StructSpwdType);
PyModule_AddObject(m, "struct_spwd", (PyObject *) &StructSpwdType);
initialized = 1;

5
Modules/timemodule.c
View File

@ -1476,8 +1476,9 @@ PyInit_time(void)
PyInit_timezone(m);
if (!initialized) {
PyStructSequence_InitType(&StructTimeType,
&struct_time_type_desc);
if (PyStructSequence_InitType2(&StructTimeType,
&struct_time_type_desc) < 0)
return NULL;
#ifdef MS_WINDOWS
winver.dwOSVersionInfoSize = sizeof(winver);

9
Objects/floatobject.c
View File

@ -1853,7 +1853,7 @@ PyTypeObject PyFloat_Type = {
float_new, /* tp_new */
};
void
int
_PyFloat_Init(void)
{
/* We attempt to determine if this machine is using IEEE
@ -1903,8 +1903,11 @@ _PyFloat_Init(void)
float_format = detected_float_format;
/* Init float info */
if (FloatInfoType.tp_name == 0)
PyStructSequence_InitType(&FloatInfoType, &floatinfo_desc);
if (FloatInfoType.tp_name == NULL) {
if (PyStructSequence_InitType2(&FloatInfoType, &floatinfo_desc) < 0)
return 0;
}
return 1;
}
int

6
Objects/longobject.c
View File

@ -5059,8 +5059,10 @@ _PyLong_Init(void)
}
#endif
/* initialize int_info */
if (Int_InfoType.tp_name == 0)
PyStructSequence_InitType(&Int_InfoType, &int_info_desc);
if (Int_InfoType.tp_name == NULL) {
if (PyStructSequence_InitType2(&Int_InfoType, &int_info_desc) < 0)
return 0;
}
return 1;
}

37
Objects/structseq.c
View File

@ -320,12 +320,13 @@ static PyTypeObject _struct_sequence_template = {
structseq_new, /* tp_new */
};
void
PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc)
int
PyStructSequence_InitType2(PyTypeObject *type, PyStructSequence_Desc *desc)
{
PyObject *dict;
PyMemberDef* members;
int n_members, n_unnamed_members, i, k;
PyObject *v;
#ifdef Py_TRACE_REFS
/* if the type object was chained, unchain it first
@ -347,8 +348,10 @@ PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc)
type->tp_doc = desc->doc;
members = PyMem_NEW(PyMemberDef, n_members-n_unnamed_members+1);
if (members == NULL)
return;
if (members == NULL) {
PyErr_NoMemory();
return -1;
}
for (i = k = 0; i < n_members; ++i) {
if (desc->fields[i].name == PyStructSequence_UnnamedField)
@ -366,22 +369,33 @@ PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc)
type->tp_members = members;
if (PyType_Ready(type) < 0)
return;
return -1;
Py_INCREF(type);
dict = type->tp_dict;
#define SET_DICT_FROM_INT(key, value) \
do { \
PyObject *v = PyLong_FromLong((long) value); \
if (v != NULL) { \
PyDict_SetItemString(dict, key, v); \
v = PyLong_FromLong((long) value); \
if (v == NULL) \
return -1; \
if (PyDict_SetItemString(dict, key, v) < 0) { \
Py_DECREF(v); \
return -1; \
} \
Py_DECREF(v); \
} while (0)
SET_DICT_FROM_INT(visible_length_key, desc->n_in_sequence);
SET_DICT_FROM_INT(real_length_key, n_members);
SET_DICT_FROM_INT(unnamed_fields_key, n_unnamed_members);
return 0;
}
void
PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc)
{
(void)PyStructSequence_InitType2(type, desc);
}
PyTypeObject*
@ -390,8 +404,11 @@ PyStructSequence_NewType(PyStructSequence_Desc *desc)
PyTypeObject *result;
result = (PyTypeObject*)PyType_GenericAlloc(&PyType_Type, 0);
if (result != NULL) {
PyStructSequence_InitType(result, desc);
if (result == NULL)
return NULL;
if (PyStructSequence_InitType2(result, desc) < 0) {
Py_DECREF(result);
return NULL;
}
return result;
}

3
Python/pythonrun.c
View File

@ -328,7 +328,8 @@ _Py_InitializeEx_Private(int install_sigs, int install_importlib)
if (!PyByteArray_Init())
Py_FatalError("Py_Initialize: can't init bytearray");
_PyFloat_Init();
if (!_PyFloat_Init())
Py_FatalError("Py_Initialize: can't init float");
interp->modules = PyDict_New();
if (interp->modules == NULL)

23
Python/sysmodule.c
View File

@ -1634,8 +1634,10 @@ _PySys_Init(void)
SET_SYS_FROM_STRING("int_info",
PyLong_GetInfo());
/* initialize hash_info */
if (Hash_InfoType.tp_name == 0)
PyStructSequence_InitType(&Hash_InfoType, &hash_info_desc);
if (Hash_InfoType.tp_name == NULL) {
if (PyStructSequence_InitType2(&Hash_InfoType, &hash_info_desc) < 0)
return NULL;
}
SET_SYS_FROM_STRING("hash_info",
get_hash_info());
SET_SYS_FROM_STRING("maxunicode",
@ -1676,8 +1678,11 @@ _PySys_Init(void)
}
/* version_info */
if (VersionInfoType.tp_name == 0)
PyStructSequence_InitType(&VersionInfoType, &version_info_desc);
if (VersionInfoType.tp_name == NULL) {
if (PyStructSequence_InitType2(&VersionInfoType,
&version_info_desc) < 0)
return NULL;
}
version_info = make_version_info();
SET_SYS_FROM_STRING("version_info", version_info);
/* prevent user from creating new instances */
@ -1688,8 +1693,10 @@ _PySys_Init(void)
SET_SYS_FROM_STRING("implementation", make_impl_info(version_info));
/* flags */
if (FlagsType.tp_name == 0)
PyStructSequence_InitType(&FlagsType, &flags_desc);
if (FlagsType.tp_name == 0) {
if (PyStructSequence_InitType2(&FlagsType, &flags_desc) < 0)
return NULL;
}
SET_SYS_FROM_STRING("flags", make_flags());
/* prevent user from creating new instances */
FlagsType.tp_init = NULL;
@ -1699,7 +1706,9 @@ _PySys_Init(void)
#if defined(MS_WINDOWS)
/* getwindowsversion */
if (WindowsVersionType.tp_name == 0)
PyStructSequence_InitType(&WindowsVersionType, &windows_version_desc);
if (PyStructSequence_InitType2(&WindowsVersionType,
&windows_version_desc) < 0)
return NULL;
/* prevent user from creating new instances */
WindowsVersionType.tp_init = NULL;
WindowsVersionType.tp_new = NULL;

6
Python/thread.c
View File

@ -399,8 +399,10 @@ PyThread_GetInfo(void)
int len;
#endif
if (ThreadInfoType.tp_name == 0)
PyStructSequence_InitType(&ThreadInfoType, &threadinfo_desc);
if (ThreadInfoType.tp_name == 0) {
if (PyStructSequence_InitType2(&ThreadInfoType, &threadinfo_desc) < 0)
return NULL;
}
threadinfo = PyStructSequence_New(&ThreadInfoType);
if (threadinfo == NULL)