108 lines
3.8 KiB
Plaintext
108 lines
3.8 KiB
Plaintext
@node vasprintf
|
|
@subsection @code{vasprintf}
|
|
@findex vasprintf
|
|
|
|
POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/vasprintf.html}
|
|
|
|
Documentation:
|
|
@itemize
|
|
@item
|
|
@ifinfo
|
|
@ref{Variable Arguments Output,,Variable Arguments Output Functions,libc},
|
|
@end ifinfo
|
|
@ifnotinfo
|
|
@url{https://www.gnu.org/software/libc/manual/html_node/Variable-Arguments-Output.html},
|
|
@end ifnotinfo
|
|
@item
|
|
@uref{https://www.kernel.org/doc/man-pages/online/pages/man3/vasprintf.3.html,,man vasprintf}.
|
|
@end itemize
|
|
|
|
Gnulib module: vasprintf or vasprintf-posix or vasprintf-gnu
|
|
@mindex vasprintf
|
|
@mindex vasprintf-posix
|
|
@mindex vasprintf-gnu
|
|
|
|
Portability problems fixed by either Gnulib module @code{vasprintf} or @code{vasprintf-posix} or @code{vasprintf-gnu}:
|
|
@itemize
|
|
@item
|
|
This function is missing on some platforms:
|
|
AIX 5.1, HP-UX 11, Solaris 10, mingw, MSVC 14.
|
|
@end itemize
|
|
|
|
Portability problems fixed by either Gnulib module @code{vasprintf-posix} or @code{vasprintf-gnu}:
|
|
@itemize
|
|
@item
|
|
This function does not support size specifiers as in C99 (@code{hh}, @code{ll},
|
|
@code{j}, @code{t}, @code{z}) on some platforms:
|
|
Cygwin 1.5.24.
|
|
@item
|
|
This function does not support size specifiers as in C23 (@code{w8},
|
|
@code{w16}, @code{w32}, @code{w64}, @code{wf8}, @code{wf16}, @code{wf32},
|
|
@code{wf64}) on some platforms:
|
|
glibc 2.37, musl libc, macOS 14, FreeBSD 13.2, NetBSD 10.0, OpenBSD 7.5, AIX 7.3, Solaris 11.4, Cygwin 3.5.3, mingw, MSVC, Android 9.0.
|
|
@item
|
|
printf @code{"%f"}, @code{"%e"}, @code{"%g"} of Infinity and NaN yields an
|
|
incorrect result on some platforms:
|
|
AIX 7.3, Solaris 11.4.
|
|
@item
|
|
This function does not support the @samp{a} and @samp{A} directives on some
|
|
platforms:
|
|
FreeBSD 5.2.1, OpenBSD 4.0, Solaris 11.4, Cygwin 1.5.x.
|
|
@item
|
|
This function does not support the @samp{b} directive, required by ISO C23,
|
|
on some platforms:
|
|
glibc 2.34, musl libc, macOS 14, FreeBSD 13.2, NetBSD 10.0, OpenBSD 7.5,
|
|
AIX 7.3, HP-UX 11, Solaris 11.4, Cygwin 3.5.3, mingw, MSVC 14, Android 9.0.
|
|
@item
|
|
This function does not support the @samp{F} directive on some platforms:
|
|
NetBSD 3.0, Cygwin 1.5.x.
|
|
@item
|
|
This function does not support the @samp{ls} directive on some platforms:
|
|
OpenBSD 4.0, Cygwin 1.5.x, Haiku.
|
|
@item
|
|
This function does not support precisions in the @samp{ls} directive correctly
|
|
on some platforms:
|
|
Solaris 11.4.
|
|
@item
|
|
This function does not support format directives that access arguments in an
|
|
arbitrary order, such as @code{"%2$s"}, on some platforms:
|
|
NetBSD 3.0.
|
|
@item
|
|
This function doesn't support the @code{'} flag on some platforms:
|
|
NetBSD 3.0, Cygwin 1.5.24.
|
|
@item
|
|
This function does not round the argument of the @samp{a} directive correctly
|
|
on some platforms:
|
|
macOS 14, FreeBSD 14.0, NetBSD 10.0, OpenBSD 7.5, AIX 7.3, Solaris 11.4.
|
|
@item
|
|
printf @code{"%010f"} of NaN and Infinity yields an incorrect result (padded
|
|
with zeroes) on some platforms:
|
|
Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, AIX 7.3, Solaris 11.4, Cygwin 1.5.x.
|
|
@item
|
|
printf @code{"%#.0x"} or @code{"%#.0X"} with a zero argument yields an
|
|
incorrect result (non-empty) on some platforms:
|
|
Mac OS X 10.6.
|
|
@item
|
|
This function produces wrong output for the @samp{lc} directive with a NUL
|
|
wide character argument on some platforms:
|
|
musl libc 1.2.4.
|
|
@item
|
|
This function can crash in out-of-memory conditions on some platforms:
|
|
FreeBSD 14.0, NetBSD 5.0.
|
|
@end itemize
|
|
|
|
Portability problems fixed by Gnulib module @code{vasprintf-gnu}:
|
|
@itemize
|
|
@item
|
|
This function does not support the @samp{B} directive on some platforms:
|
|
glibc 2.34, musl libc, macOS 14, FreeBSD 13.2, NetBSD 10.0, OpenBSD 7.5, AIX 7.3, Solaris 11.4, Cygwin 3.5.3, mingw, MSVC, Android 9.0.
|
|
@end itemize
|
|
|
|
Portability problems not fixed by Gnulib:
|
|
@itemize
|
|
@item
|
|
The @code{%m} directive is not portable, use @code{%s} mapped to an
|
|
argument of @code{strerror(errno)} (or a version of @code{strerror_r})
|
|
instead.
|
|
@end itemize
|