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POSIX left errno undefined on ptsname() failure, although there has at least been an effort to specify reasonable values to use: http://www.austingroupbugs.net/view.php?id=503 However, our tests for ptsname and ptsname_r already require errno to be set to useful values (as in glibc), so it is worth replacing ptsname on FreeBSD 8.2 in order to get better QoI and pass the test. * m4/ptsname.m4 (gl_FUNC_PTSNAME): Probe for FreeBSD bug. * m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): Add new witness. * modules/stdlib (Makefile.am): Replace witness. * lib/stdlib.in.h (ptsname): Allow for replacement. * modules/ptsname (configure.ac): Trigger replacement. * doc/posix-functions/ptsname.texi (ptsname): Document this.
35 lines
900 B
Plaintext
35 lines
900 B
Plaintext
@node ptsname
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@section @code{ptsname}
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@findex ptsname
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/ptsname.html}
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Gnulib module: ptsname
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Portability problems fixed by Gnulib:
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@itemize
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@item
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This function is missing on some platforms:
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Mac OS X 10.3, OpenBSD 3.8, Minix 3.1.8, mingw, MSVC 9, BeOS.
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@item
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This function fails to set errno on failure on some platforms:
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FreeBSD 8.2.
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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This function is not declared on some platforms:
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IRIX 5.3.
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@item
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On Solaris 11 2010-11, this function fails on all BSD-style @file{/dev/pty*}
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device files.
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@item
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This function is not thread-safe on some platforms:
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Cygwin 1.7.9.
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Likewise, the gnulib replacement is not thread-safe.
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@end itemize
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Note that the Gnulib module @code{ptsname_r} is a version of this
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function that is more likely to be thread-safe.
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