Fix a potential 'SystemError: NULL result without error'.
NULL may be a valid return value from PyLong_AsVoidPtr.
Also move an older ctypes NEWS item in the correct category.
Merged revisions 59925 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk/Modules/_ctypes
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r59925 | thomas.heller | 2008-01-11 20:34:06 +0100 (Fr, 11 Jan 2008) | 5 lines
Raise an error instead of crashing with a segfault when a NULL
function pointer is called.
Will backport to release25-maint.
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svn+ssh://pythondev@svn.python.org/python/trunk/Modules/_ctypes
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r55896 | thomas.heller | 2007-06-11 17:58:33 +0200 (Mo, 11 Jun 2007) | 3 lines
Use "O&" in calls to PyArg_Parse when we need a 'void*' instead of "k"
or "K" codes.
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svn+ssh://pythondev@svn.python.org/python/trunk/Lib/ctypes
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r55129 | thomas.heller | 2007-05-04 21:54:22 +0200 (Fr, 04 Mai 2007) | 3 lines
Do not truncate 64-bit pointers to 32-bit integers.
Fixes SF #1703286, will backport to release25-maint.
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r55131 | thomas.heller | 2007-05-04 21:56:32 +0200 (Fr, 04 Mai 2007) | 1 line
Oops, these tests do not run on Windows CE.
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svn+ssh://pythondev@svn.python.org/python/trunk/Modules/_ctypes
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r55027 | thomas.heller | 2007-04-30 18:04:57 +0200 (Mo, 30 Apr 2007) | 8 lines
When accessing the .value attribute of a c_wchar_p instance, and the
instance does not point to a valid wchar_t zero-terminated string,
raise a ValueError. c_char_p does this already.
The ValueError message now contains the correct pointer address.
Will backport to release25-maint.
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svn+ssh://pythondev@svn.python.org/python/trunk/Modules/_ctypes
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r55025 | thomas.heller | 2007-04-30 17:44:17 +0200 (Mo, 30 Apr 2007) | 4 lines
Make sure to call PyErr_NoMemory() in several places where
PyMem_Malloc() could potentially fail.
Will backport to the release25-maint branch.
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svn+ssh://pythondev@svn.python.org/python/trunk/Lib/ctypes
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r54248 | thomas.heller | 2007-03-09 21:39:22 +0100 (Fr, 09 Mär 2007) | 7 lines
Bug #1651235: When a tuple was passed to a ctypes function call,
Python would crash instead of raising an error.
The crash was caused by a section of code that should have been
removed long ago, at that time ctypes had other ways to pass
parameters to function calls.
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svn+ssh://pythondev@svn.python.org/python/trunk/Modules/_ctypes
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r53556 | thomas.heller | 2007-01-25 19:34:14 +0100 (Do, 25 Jan 2007) | 3 lines
Fix for #1643874: When calling SysAllocString, create a PyCObject
which will eventually call SysFreeString to free the BSTR resource.
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be true if we didn't malloc the code? Seems like the code is wrong
or could use comments.
Also verify if the buildbots are working properly for the 2.5 branch.
Check this and raise an error when something else is used - before
this change ctypes would hang or crash when such a callback was
called. This is a partial fix for #1574584.
Backported from trunk.
The cast function did not accept c_char_p or c_wchar_p instances
as first argument, and failed with a 'bad argument to internal function'
error message.
Anonymous structure fields that have a bit-width specified did not work,
and they gave a strange error message from PyArg_ParseTuple:
function takes exactly 2 arguments (3 given).
Add asserts to check for 'impossible' NULL values, with comments.
In one place where I'm not 1000% sure about the non-NULL, raise
a RuntimeError for safety.
This should fix the klocwork issues that Neal sent me. If so,
it should be applied to the release25-maint branch also.
of the Python part of a callback function to C. If it cannot be
converted, call PyErr_WriteUnraisable with the exception we got.
Before, arbitrary data has been passed to the calling C code in this
case.
(I'm not really sure the NEWS entry is understandable, but I cannot
find better words)
PyObject_stgdict() and PyType_stgdict() calls are non-NULL before
dereferencing the result. Hopefully this fixes what klocwork is
complaining about.
Fix a few other nits as well.
ctypes instances no longer have the internal and undocumented
'_as_parameter_' attribute which was used to adapt them to foreign
function calls; this mechanism is replaced by a function pointer in
the type's stgdict.
In the 'from_param' class methods, try the _as_parameter_ attribute if
other conversions are not possible.
This makes the documented _as_parameter_ mechanism work as intended.
Change the ctypes version number to 1.0.1.
storage before converting the result to C data. See the comment in
the code for details.
Provide a better context for errors when the conversion of a callback
function's result cannot be converted.
Thomas Heller
Matthias Klose
Kristján Valur Jónsson
Neal Norwitz
Martin v. Löwis