blob: d81def5cddb71fb08511dfc71071d1e4a399ff92 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
@node dup2
@section @code{dup2}
@findex dup2
POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html}
Gnulib module: dup2
Portability problems fixed by Gnulib:
@itemize
@item
This function is declared in a different header file (namely, @code{<io.h>})
on some platforms:
MSVC 14.
@item
This function always returns 0 for success on some platforms:
mingw, MSVC 14.
@item
This function can hang when duplicating an fd to itself on some platforms:
mingw, MSVC 14.
@item
This function crashes when invoked with invalid arguments on some platforms:
Cygwin 1.7.17, MSVC 14.
@item
This function crashes when invoked with valid arguments on some platforms:
Cygwin 1.7.25.
@item
This function fails with @code{EINVAL} when duplicating an fd to itself:
Android.
@item
This function resets the @code{FD_CLOEXEC} flag when duplicating an fd
to itself on some platforms:
Haiku.
@item
This function returns 0 for @code{dup2 (1, 1)} on some platforms:
Cygwin 1.5.x.
@item
This function may return @code{-EBADF} instead of @code{-1} on some platforms:
Linux releases between July 2008 and May 2009 (versions 2.6.27 to 2.6.29).
@item
This function returns @code{EMFILE} instead of @code{EBADF} for
large targets, which interferes with using
@code{dup2(fd,fd)==fd)} as the minimal @code{EBADF} filter:
AIX 7.1, FreeBSD 6.1, Cygwin 1.5.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@end itemize
|
