cpython-lru_cache-weakref: Python/importdl.c history

Issue #18408: Fix _PyImport_LoadDynamicModule(), handle PyUnicode_FromFormat() failure

Wed, 17 Jul 2013 21:53:23 +0200

Issue #18408: Fix _PyImport_LoadDynamicModule(), handle PyUnicode_FromFormat() failure

Issue #18426: improve exception message. Courtesy of Amaury

Thu, 11 Jul 2013 13:02:30 +0200

Issue #18426: improve exception message. Courtesy of Amaury

Issue #18426: Fix NULL pointer dereference in C extension import when

Thu, 11 Jul 2013 11:22:21 +0200

Issue #18426: Fix NULL pointer dereference in C extension import when
PyModule_GetDef() returns an error.

Issue #14599: Generalize a test for ImportError.path and add support

Fri, 20 Apr 2012 15:22:50 -0400

Issue #14599: Generalize a test for ImportError.path and add support
in Python/dynload_shlibs.c.

This should fix the remaining importlib test failure on Windows.
Support in AIX and HP-UX will be in a separate checkin.

Issue #2377: Make importlib the implementation of import().

Sat, 14 Apr 2012 14:10:13 -0400

Issue #2377: Make importlib the implementation of __import__().

importlib._bootstrap is now frozen into Python/importlib.h and stored
as _frozen_importlib in sys.modules. Py_Initialize() loads the frozen
code along with sys and imp and then uses _frozen_importlib._install()
to set builtins.__import__() w/ _frozen_importlib.__import__().

_PyImport_LoadDynamicModule() encodes the module name explicitly to ASCII

Sat, 07 May 2011 12:46:05 +0200

_PyImport_LoadDynamicModule() encodes the module name explicitly to ASCII

The name must be encodable to ASCII because dynamic module must have a function
called "PyInit_NAME", they are written in C, and the C language doesn't accept
non-ASCII identifiers.

Issue #11619: _PyImport_LoadDynamicModule() doesn't encode the path to bytes

Mon, 04 Apr 2011 23:05:53 +0200

Issue #11619: _PyImport_LoadDynamicModule() doesn't encode the path to bytes
on Windows.

Issue #3080: _PyImport_LoadDynamicModule() uses Unicode for name and path

Mon, 14 Mar 2011 15:54:07 -0400

Issue #3080: _PyImport_LoadDynamicModule() uses Unicode for name and path

Document also that dynamic module names are ASCII only

Issue #3080: Import builtins using Unicode strings

Mon, 07 Mar 2011 18:20:56 +0100

Issue #3080: Import builtins using Unicode strings

- is_builtin(), init_builtin(), load_builtin() and other builtin related
functions use Unicode strings, instead of byte strings
- Rename _PyImport_FixupExtensionUnicode() to _PyImport_FixupExtensionObject()
- Rename _PyImport_FindExtensionUnicode() to _PyImport_FindExtensionObject()

Issue #3080: Remove unused argument of _PyImport_GetDynLoadFunc()

Tue, 22 Feb 2011 23:16:19 +0000

Issue #3080: Remove unused argument of _PyImport_GetDynLoadFunc()

The first argument, fqname, was not used.

_PyImport_FixupExtension() and _PyImport_FindExtension() uses FS encoding

Sun, 17 Oct 2010 01:24:53 +0000

_PyImport_FixupExtension() and _PyImport_FindExtension() uses FS encoding

* Rename _PyImport_FindExtension() to _PyImport_FindExtensionUnicode():
the filename becomes a Unicode object instead of byte string
* Rename _PyImport_FixupExtension() to _PyImport_FixupExtensionUnicode():
the filename becomes a Unicode object instead of byte string

Recorded merge of revisions 81029 via svnmerge from

Sun, 09 May 2010 15:52:27 +0000

Recorded merge of revisions 81029 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
r81029 | antoine.pitrou | 2010-05-09 16:46:46 +0200 (dim., 09 mai 2010) | 3 lines

Untabify C files. Will watch buildbots.
........

Implement PEP 3121: new module initialization and finalization API.

Wed, 11 Jun 2008 05:26:20 +0000

Implement PEP 3121: new module initialization and finalization API.

Move decl so it compiles with C89.

Mon, 15 Oct 2007 16:08:26 +0000

Move decl so it compiles with C89.

Patch #1272, by Christian Heimes and Alexandre Vassalotti.

Mon, 15 Oct 2007 02:52:41 +0000

Patch #1272, by Christian Heimes and Alexandre Vassalotti.
Changes to make __file__ a proper Unicode object, using the default
filesystem encoding.
This is a bit tricky because the default filesystem encoding isn't
set by the time we import the first modules; at that point we fudge
things a bit. This is okay since __file__ isn't really used much
except for error reporting.
Tested on OSX and Linux only so far.

Untabify C files. Will watch buildbots.

Sun, 09 May 2010 14:46:46 +0000

Untabify C files. Will watch buildbots.

Patch #794826: Add file in dynamically loaded modules for multiple

Thu, 04 Sep 2003 18:45:59 +0000

Patch #794826: Add __file__ in dynamically loaded modules for multiple
interpreters. Fixes #698282. Will backport to 2.3.

Simplify, and avoid PyModule_GetDict() while we're at it.

Mon, 26 Aug 2002 21:15:11 +0000

Simplify, and avoid PyModule_GetDict() while we're at it.

SF patch #471839: Bug when extensions import extensions (Shane Hathaway)

Tue, 16 Oct 2001 20:07:34 +0000

SF patch #471839: Bug when extensions import extensions (Shane Hathaway)

When an extension imports another extension in its
initXXX() function, the variable _Py_PackageContext is
prematurely reset to NULL. If the outer extension then
calls Py_InitModule(), the extension is installed in
sys.modules without its package name. The
manifestation of this bug is a "SystemError:
_PyImport_FixupExtension: module .
not loaded".

To fix this, importdl.c just needs to retain the old
value of _Py_PackageContext and restore it after the
initXXX() method is called. The attached patch does this.

This patch applies to Python 2.1.1 and the current CVS.

REMOVED all CWI, CNRI and BeOpen copyright markings.

Fri, 01 Sep 2000 23:29:29 +0000

REMOVED all CWI, CNRI and BeOpen copyright markings.
This should match the situation in the 1.6b1 tree.

Mass ANSIfication of function definitions. Doesn't cover all 'extern'

Sat, 22 Jul 2000 18:47:25 +0000

Mass ANSIfication of function definitions. Doesn't cover all 'extern'
declarations yet, those come later.

Change copyright notice - 2nd try.

Fri, 30 Jun 2000 23:58:06 +0000

Change copyright notice - 2nd try.

Change copyright notice.

Fri, 30 Jun 2000 23:50:40 +0000

Change copyright notice.

Cleanup patches from Greg Stein:

Wed, 22 Dec 1999 14:09:35 +0000

Cleanup patches from Greg Stein:

* in import.c, #ifdef out references to dynamic loading based on
HAVE_DYNAMIC_LOADING

* clean out the platform-specific crud from importdl.c.
[ maybe fold this function into import.c and drop the importdl.c file? Greg.]

* change GetDynLoadFunc's "funcname" parameter to "shortname". change
"name" to "fqname" for clarification.

* each GetDynLoadFunc now creates its own funcname value.

WARNING: as I mentioned previously, we may run into an issue with a
missing "_" on some platforms. Testing will show this pretty quickly,
however.

* move pathname munging into dynload_shlib.c

Moved most of the platform-specific code to dynload_.c files.

Mon, 20 Dec 1999 21:20:42 +0000

Moved most of the platform-specific code to dynload_.c files.
(A few nite remain, these will probably disappear soon.)

This is part of a set of patches by Greg Stein.

Patch by Vladimir Marangozov, inspired by a bug report from Gary

Tue, 16 Nov 1999 15:54:16 +0000

Patch by Vladimir Marangozov, inspired by a bug report from Gary
Duzan, for AIX, to support C++ objects with static initializers, when
using the genuine IBM C++ compiler (namely xlC/xlC_r).

See accompanying patches to configure.in and acconfig.h.

Vladimir Marangozov fixes an AIX-specific problem, writing:

Wed, 04 Aug 1999 18:00:12 +0000

Vladimir Marangozov fixes an AIX-specific problem, writing:

"""
Following up Robin Dunn's troubles with freeze, here's a patch that
fixes an oddity regarding the import logic of shared modules on AIX.

Symbol resolution of shared modules is now handled properly for the cases
when the python library is linked to a binary with an arbitrary name.
This includes the standard python[version] executable, but also applications
that are embedding the python core (i.e. linked with libpython[version].a,
the latter being static or shared).
"""

Patches by William Lewis for Nextstep descendants.

Wed, 27 Jan 1999 17:53:11 +0000

Patches by William Lewis for Nextstep descendants.

Ty Sarna writes:

Thu, 07 Jan 1999 21:50:41 +0000

Ty Sarna writes:
The following patches (relative to 1.5.2b1) enable Python dynamic
loading to work on NetBSD platforms that use ELF (presnetly mips and
alpha systems). They automaticly determine wether the system is ELF or
a.out rather than using astatic list of platforms so that when other
NetBSD platforms move to ELF, python will continue to work without
change.

Chris Herborth writes:

Mon, 04 Jan 1999 16:45:59 +0000

Chris Herborth writes:
Donn Cave tells me the PyImport_BeImageID() function isn't needed anymore.

Thanks to Chris Herborth, the thread primitives now have proper Py*

Mon, 21 Dec 1998 19:32:43 +0000

Thanks to Chris Herborth, the thread primitives now have proper Py*
names in the source code (they already had those for the linker,
through some smart macros; but the source still had the old, un-Py names).

Replace fprintf(stderr, ...) with PySys_WriteStderr(...).

Mon, 12 Oct 1998 18:23:55 +0000

Replace fprintf(stderr, ...) with PySys_WriteStderr(...).

On Win32, use

Thu, 08 Oct 1998 01:44:41 +0000

On Win32, use
LoadLibraryEx(pathname, NULL, LOAD_WITH_ALTERED_SEARCH_PATH)
to search dependent DLLs in the directory of the pathname.

Renamed thread.h to pythread.h.

Thu, 01 Oct 1998 20:43:23 +0000

Renamed thread.h to pythread.h.
(Also removed whitespace after # in some BEOS related cpp directives.)

In FreeBSD when using ELF, an underscore is needed in front of the

Wed, 30 Sep 1998 14:34:52 +0000

In FreeBSD when using ELF, an underscore is needed in front of the
function name. (Vladimir Kushnir by way of Thomas Gellekum.)

Mac-specific mod to enable aliases on import paths.

Mon, 14 Sep 1998 13:40:53 +0000

Mac-specific mod to enable aliases on import paths.
(Jack Jansen and/or Just van Rossum)

Ted Horst writes in psa-members@python.org:

Mon, 24 Aug 1998 14:15:44 +0000

Ted Horst writes in psa-members@python.org:

This is a patch that Bill Bummgarner did for 1.4 that hasn't made its
way into the distribution yet. This is important if you want to use
the ObjC module.

Changes for BeOS, QNX and long long, by Chris Herborth.

Tue, 04 Aug 1998 22:46:29 +0000

Changes for BeOS, QNX and long long, by Chris Herborth.

Reindented some OS/2 and hpux code that looked ugly or at least

Wed, 08 Jul 1998 13:47:12 +0000

Reindented some OS/2 and hpux code that looked ugly or at least
inconsistent.

Windows-specific hack to make sure that when LoadLibrary() is called,

Sat, 27 Jun 1998 21:53:17 +0000

Windows-specific hack to make sure that when LoadLibrary() is called,
the filename contains at least a rudimentary pathname.
(The bad part is that we need to call getcwd() because only a prefix
of ".\\" is not enough -- we prefix the drive letter.)

Remove use of RTLD_GLOBAL.

Mon, 18 May 1998 13:42:45 +0000

Remove use of RTLD_GLOBAL.

In debug mode on MS Windows, DLLs are called foo_d.pyd or foo_d.dll.

Fri, 15 May 1998 20:22:08 +0000

In debug mode on MS Windows, DLLs are called foo_d.pyd or foo_d.dll.

Support for OpenBSD :-(

Mon, 13 Apr 1998 15:27:21 +0000

Support for OpenBSD :-(

Move #include to before osdefs.h (Donn Cave).

Fri, 10 Apr 1998 23:45:14 +0000

Move #include to before osdefs.h (Donn Cave).

Protect PyErr_Format format string argument from overflow.

Mon, 19 Jan 1998 22:23:08 +0000

Protect PyErr_Format format string argument from overflow.

Better #ifdefs for NetBSD, taking into account that at least on netBSD

Mon, 19 Jan 1998 22:03:52 +0000

Better #ifdefs for NetBSD, taking into account that at least on netBSD
1.3, dlopen() etc. are fully implemented, including dlerror().
From Jaromir Dolecek and Ty Sarna.

Add the flag RTLD_GLOBAL to the dlopen() options.

Tue, 02 Dec 1997 20:43:18 +0000

Add the flag RTLD_GLOBAL to the dlopen() options.
This exports symbols defined by the loaded extension to other
extensions (loaded later).

(I'm not quite sure about this but suppose it can't hurt...)

os2 patch by Jeff Rush

Sat, 22 Nov 1997 21:53:48 +0000

os2 patch by Jeff Rush

Fix importing of shared libraries from inside packages.

Wed, 19 Nov 1997 18:53:33 +0000

Fix importing of shared libraries from inside packages.
This is a bit of a hack: when the shared library is loaded, the module
name is "package.module", but the module calls Py_InitModule*() with just
"module" for the name. The shared library loader squirrels away the true
name of the module in _Py_PackageContext, and Py_InitModule*() will
substitute this (if the name actually matches).

Shared libraries didn't quite work under AIX because of the change in

Fri, 10 Oct 1997 17:40:00 +0000

Shared libraries didn't quite work under AIX because of the change in
status of the GNU readline interface. Here's a patch, by Vladimir
Marangozov.

set sharedlib extensions properly for NeXT (Ted Horst)

Sat, 16 Aug 1997 14:38:09 +0000

set sharedlib extensions properly for NeXT (Ted Horst)

The last of the mass checkins for separate (sub)interpreters.

Sat, 02 Aug 1997 03:10:38 +0000

The last of the mass checkins for separate (sub)interpreters.
Everything should now work again.

See the comments for the .h files mass checkin (e.g. pystate.h) for
more detail.

Removed some variables that are used to exchange data between import.c and

Mon, 21 Jul 1997 14:54:36 +0000

Removed some variables that are used to exchange data between import.c and
importdl.c: the MAXSUFFIXSIZE macro is now defined in importdl.h, and
the modules dictionary is now passed using PyImport_GetModuleDict().

Also undefine USE_SHLIB for AIX -- in AIX 4.2 and up, dlfcn.h exists
but we don't want to use it.

One last rename glitch: import_modules -> _PyImport_Modules.

Wed, 14 May 1997 17:36:12 +0000

One last rename glitch: import_modules -> _PyImport_Modules.

Remove 2 out of 3 FreeBSD tests.

Mon, 05 May 1997 15:03:26 +0000

Remove 2 out of 3 __FreeBSD__ tests.
These are no longer needed as of FreeBSD 2.0.5, according to
Thomas Gellekum .

Avoid some potential (though unlikely) sprintf buffer overflows.

Wed, 30 Apr 1997 19:07:54 +0000

Avoid some potential (though unlikely) sprintf buffer overflows.

Quickly renamed the remaining files -- this directory is done.

Tue, 29 Apr 1997 20:08:16 +0000

Quickly renamed the remaining files -- this directory is done.

(Jack:) On the Mac, don't automatically enable dynamic loading.

Fri, 11 Apr 1997 19:22:06 +0000

(Jack:) On the Mac, don't automatically enable dynamic loading.

Tweaks to keep the Microsoft compiler quier.

Wed, 09 Apr 1997 19:24:53 +0000

Tweaks to keep the Microsoft compiler quier.

Some extra flags that an HPUX user wants me to add.

Thu, 05 Dec 1996 23:15:35 +0000

Some extra flags that an HPUX user wants me to add.