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 14, 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 11.4, mingw, MSVC 14.
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 11.4, Cygwin 1.5.x, mingw, MSVC 14, 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 14, 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 14, BeOS.
46 This function doesn't support the @code{'} flag on some platforms:
47 NetBSD 3.0, Cygwin 1.5.24, mingw, MSVC 14.
49 This function does not round the argument of the @samp{a} directive correctly
51 Mac OS X 10.12, FreeBSD 6.1.
53 This function behaves incorrectly when a @samp{-} flag and a negative width
54 are specified together, on some platforms:
57 printf @code{"%010f"} of NaN and Infinity yields an incorrect result (padded
58 with zeroes, or wrong capitalization) on some platforms:
59 Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, AIX 5.2, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin 1.5.x, mingw, MSVC 14.
61 This function does not support precisions larger than 512 or 1024 in integer,
62 floating-point and pointer output on some platforms:
63 AIX 7.1, Solaris 10/x86, mingw, MSVC 14, BeOS.
65 This function mishandles large floating point precisions
66 (for example, formatting 1.0 with @samp{"%.511f"})
70 This function can crash in out-of-memory conditions on some platforms:
71 Mac OS X 10.3, FreeBSD 6.0, NetBSD 5.0.
74 Portability problems fixed by Gnulib module @code{stdio} or @code{fprintf-posix}, together with module @code{nonblocking}:
77 When writing to a non-blocking pipe whose buffer is full, this function fails
78 with @code{errno} being set to @code{ENOSPC} instead of @code{EAGAIN} on some
83 Portability problems fixed by Gnulib module @code{stdio} or @code{fprintf-posix}, together with module @code{sigpipe}:
86 When writing to a pipe with no readers, this function fails, instead of
87 obeying the current @code{SIGPIPE} handler, on some platforms:
91 Portability problems not fixed by Gnulib:
94 Formatting noncanonical @samp{long double} numbers produces
95 nonmeaningful results on some platforms:
96 glibc and others, on x86, x86_64, IA-64 CPUs.
98 When formatting an integer with grouping flag, this function inserts thousands
99 separators even in the "C" locale on some platforms:
102 Attempting to write to a read-only stream fails with @code{EOF} but
103 does not set the error flag for @code{ferror} on some platforms:
104 glibc 2.13, cygwin 1.7.9.