patch 9.0.1980: win32: issues with stable python ABI Commit: https://github.com/vim/vim/commit/119fdd9293f63614ed2ca60a78993466435db639 Author: Ken Takata <kentkt@csc.jp> Date: Wed Oct 4 20:05:05 2023 +0200 patch 9.0.1980: win32: issues with stable python ABI Problem: win32: issues with stable python ABI Solution: if_python3,win32: Fix Python3 stable ABI There were some issues in current stable ABI implementation on Windows: * Python DLL name should be `python3.dll` instead of `python311.dll` and so on. (See: https://docs.python.org/3/c-api/stable.html) * Some non-stable API functions were used: - `_PyObject_NextNotImplemented` - `PyStdPrinter_Type` * `reset_stdin()` and `hook_py_exit()` didn't work with `python3.dll`. `python3.dll` is a special type of DLL called forwarder DLL. It just forwards the functions to other DLL (e.g. `python311.dll`). There were two issues regarding these functions: - `python3.dll` doesn't have import tables. This caused a crash in `get_imported_func_info()`. Add a check whether the specified DLL has an import table. - `reset_stdin()` and `hook_py_exit()` should be applied to the forwarded DLL (e.g. `python311.dll`), not to `python3.dll`. Check the export directory of `python3.dll` to find the forwarded DLL and apply the functions to it. closes: #13260 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Ken Takata <kentkt@csc.jp>

/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */
/*
 * if_perlsfio.c: Special I/O functions for Perl interface.
 */

#define _memory_h	// avoid memset redeclaration
#define IN_PERL_FILE	// don't include if_perl.pro from prot.h

#include "vim.h"

#if defined(USE_SFIO) || defined(PROTO)

#ifndef USE_SFIO	// just generating prototypes
# define Sfio_t int
# define Sfdisc_t int
#endif

#define NIL(type)	((type)0)

    static int
sfvimwrite(
    Sfio_t	    *f,		// stream involved
    char	    *buf,	// buffer to read from
    int		    n,		// number of bytes to write
    Sfdisc_t	    *disc)	// discipline
{
    char_u *str;

    str = vim_strnsave((char_u *)buf, n);
    if (str == NULL)
	return 0;
    msg_split((char *)str);
    vim_free(str);

    return n;
}

/*
 * sfdcnewnvi --
 *  Create Vim discipline
 */
    Sfdisc_t *
sfdcnewvim(void)
{
    Sfdisc_t	*disc;

    disc = ALLOC_ONE(Sfdisc_t);
    if (disc == NULL)
	return NULL;

    disc->readf = (Sfread_f)NULL;
    disc->writef = sfvimwrite;
    disc->seekf = (Sfseek_f)NULL;
    disc->exceptf = (Sfexcept_f)NULL;

    return disc;
}

#endif // USE_SFIO