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10.911 ptsname

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/ptsname.html

Gnulib module: ptsname

Portability problems fixed by Gnulib:

• This function is missing on some platforms: OpenBSD 3.8, Minix 3.1.8, mingw, MSVC 14.
• This function fails to set errno on failure on some platforms: FreeBSD 8.2.

Portability problems not fixed by Gnulib:

• On Solaris 11 2010-11, this function fails on all BSD-style /dev/pty* device files.
• This function is not thread-safe on some platforms: Cygwin 1.7.9. Likewise, the gnulib replacement is not thread-safe.

Note that the Gnulib module ptsname_r is a version of this function that is more likely to be thread-safe.