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v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision 102d11a6d6f972c5d9071f0c9a13204040ec39c8 authored by Ronald Oussoren on 23 July 2010, 09:50:05 UTC, committed by Ronald Oussoren on 23 July 2010, 09:50:05 UTC 
Workaround for issue 4047: in some configurations of
 
the Crash Reporter on OSX test_subprocess will trigger
the reporter.

This patch prints a warning when the Crash Reporter will
get triggered intentionally, which should avoid confusing
people.
1 parent e8d252d
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Tip revision: 102d11a6d6f972c5d9071f0c9a13204040ec39c8 authored by Ronald Oussoren on 23 July 2010, 09:50:05 UTC
Workaround for issue 4047: in some configurations of
Tip revision: 102d11a
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>

#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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