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10.129 close

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

Gnulib module: close

Portability problems fixed by Gnulib:

• This function is declared in a different header file (namely, <io.h>) on some platforms: MSVC 14.
• This function crashes when invoked with invalid arguments on some platforms: MSVC 14.
• On Windows platforms (excluding Cygwin), socket and accept do not return file descriptors that can be closed by close. Instead, closesocket must be used.

Portability problems not fixed by Gnulib: