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v0.5.1
https://github.com/python/cpython
Revision f65ede3f8fa08493facf48177540d0ec26e59560 authored by Miss Islington (bot) on 03 December 2018, 09:11:37 UTC, committed by GitHub on 03 December 2018, 09:11:37 UTC

Use "ll" instead of the nonstandard "q".
(cherry picked from commit 062cbb67726f26794b1b461853e40696b4a0b220)

Co-authored-by: Zackery Spytz <zspytz@gmail.com>
1 parent 013832f
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Tip revision: f65ede3f8fa08493facf48177540d0ec26e59560 authored by Miss Islington (bot) on 03 December 2018, 09:11:37 UTC
bpo-10320: Replace nonstandard sprintf() length modifier in ctypes' PyCArg_repr(). (GH-10853)
Tip revision: f65ede3
dup2.c
/*
 * Public domain dup2() lookalike
 * by Curtis Jackson @ AT&T Technologies, Burlington, NC
 * electronic address:  burl!rcj
 *
 * dup2 performs the following functions:
 *
 * Check to make sure that fd1 is a valid open file descriptor.
 * Check to see if fd2 is already open; if so, close it.
 * Duplicate fd1 onto fd2; checking to make sure fd2 is a valid fd.
 * Return fd2 if all went well; return BADEXIT otherwise.
 */

#include <fcntl.h>
#include <unistd.h>

#define BADEXIT -1

int
dup2(int fd1, int fd2)
{
	if (fd1 != fd2) {
		if (fcntl(fd1, F_GETFL) < 0)
			return BADEXIT;
		if (fcntl(fd2, F_GETFL) >= 0)
			close(fd2);
		if (fcntl(fd1, F_DUPFD, fd2) < 0)
			return BADEXIT;
	}
	return fd2;
}
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