2 @section @code{fprintf}
5 POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/fprintf.html}
7 Gnulib module: fprintf-posix or stdio, nonblocking, sigpipe
9 Portability problems fixed by Gnulib module @code{fprintf-posix}:
12 This function does not support size specifiers as in C99 (@code{hh}, @code{ll},
13 @code{j}, @code{t}, @code{z}) on some platforms:
14 AIX 5.1, HP-UX 11.23, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.24, mingw, MSVC 9, BeOS.
16 printf of @samp{long double} numbers is unsupported on some platforms:
19 printf @code{"%f"}, @code{"%e"}, @code{"%g"} of Infinity and NaN yields an
20 incorrect result on some platforms:
21 AIX 5.2, OSF/1 5.1, Solaris 11 2011-11, mingw, MSVC 9.
23 This function does not support the @samp{a} and @samp{A} directives on some
25 glibc-2.3.6, Mac OS X 10.5, NetBSD 5.0, OpenBSD 4.0, AIX 5.2, HP-UX 11,
26 IRIX 6.5, OSF/1 5.1, Solaris 11 2011-11, Cygwin 1.5.x, mingw, MSVC 9, BeOS.
28 This function does not support the @samp{F} directive on some platforms:
29 NetBSD 3.0, AIX 5.1, HP-UX 11.23, IRIX 6.5, OSF/1 5.1, Solaris 9,
30 Cygwin 1.5.x, mingw, MSVC 9, BeOS.
32 This function does not support the @samp{n} directive on some platforms:
35 This function does not support the @samp{ls} directive on some platforms:
36 OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Cygwin 1.5.x, Haiku.
38 This function does not support precisions in the @samp{ls} directive correctly
42 This function does not support format directives that access arguments in an
43 arbitrary order, such as @code{"%2$s"}, on some platforms:
44 NetBSD 3.0, mingw, MSVC 9, BeOS.
46 This function doesn't support the @code{'} flag on some platforms:
47 NetBSD 3.0, Cygwin 1.5.24, mingw, MSVC 9.
49 This function behaves incorrectly when a @samp{-} flag and a negative width
50 are specified together, on some platforms:
53 printf @code{"%010f"} of NaN and Infinity yields an incorrect result (padded
54 with zeroes) on some platforms:
55 Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, AIX 5.2, IRIX 6.5, OSF/1 5.1, Solaris 11 2011-11, Cygwin 1.5.x, mingw, MSVC 9.
57 This function does not support precisions larger than 512 or 1024 in integer,
58 floating-point and pointer output on some platforms:
59 AIX 7.1, Solaris 10/x86, mingw, MSVC 9, BeOS.
61 This function mishandles large floating point precisions
62 (for example, formatting 1.0 with @samp{"%.511f"})
66 This function can crash in out-of-memory conditions on some platforms:
67 Mac OS X 10.3, FreeBSD 6.0, NetBSD 5.0.
70 Portability problems fixed by Gnulib module @code{stdio} or @code{fprintf-posix}, together with module @code{nonblocking}:
73 When writing to a non-blocking pipe whose buffer is full, this function fails
74 with @code{errno} being set to @code{ENOSPC} instead of @code{EAGAIN} on some
79 Portability problems fixed by Gnulib module @code{stdio} or @code{fprintf-posix}, together with module @code{sigpipe}:
82 When writing to a pipe with no readers, this function fails, instead of
83 obeying the current @code{SIGPIPE} handler, on some platforms:
87 Portability problems not fixed by Gnulib:
90 Formatting noncanonical @samp{long double} numbers produces
91 nonmeaningful results on some platforms:
92 glibc and others, on x86, x86_64, IA-64 CPUs.
94 When formatting an integer with grouping flag, this function inserts thousands
95 separators even in the "C" locale on some platforms:
98 Attempting to write to a read-only stream fails with @code{EOF} but
99 does not set the error flag for @code{ferror} on some platforms:
100 glibc 2.13, cygwin 1.7.9.