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9.71 sys/types.h

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_types.h.html

Gnulib module: sys_types

Portability problems fixed by Gnulib:

• The type pid_t is not defined on some platforms: MSVC 14.
• The type size_t is not defined in this file on some platforms: MSVC 14.
• The type ssize_t is not defined on some platforms: MSVC 14.
• The type mode_t is not defined on some platforms: MSVC 14.
• The type off64_t is not defined on some platforms: macOS 14, FreeBSD 10.4, NetBSD 10.0, OpenBSD 7.5, MSVC 14, Cygwin, Haiku, Minix 3.3.
• Some systems leak definitions of major, minor, and makedev through this header; however, when sys/sysmacros.h exists, that file should also be included to avoid deprecation warnings from the versions in this header: glibc 2.25.

See Avoiding the year 2038 problem, for portability issues with time_t.

Portability problems not fixed by Gnulib:

• On some platforms the types blksize_t and suseconds_t are signed integer types that are wider than long: glibc x32

This module, together with the module largefile, also defines the type off_t to a 64-bit integer type on some platforms: mingw, MSVC 14.