llvm-project

b545f9ff - [libc] Add missing standard and Linux header macros (#211862)

[libc] Add missing standard and Linux header macros (#211862) Add missing header macro constants: * endian-macros.h: __BYTE_ORDER, __LITTLE_ENDIAN, and __BIG_ENDIAN * sys-stat-macros.h: S_IREAD, S_IWRITE, S_IEXEC, and ACCESSPERMS * limits-macros.h: _POSIX_HOST_NAME_MAX and HOST_NAME_MAX * unistd-macros.h: TEMP_FAILURE_RETRY POSIX.1-2017 specifies _POSIX_HOST_NAME_MAX as 255. The Linux gethostname(2) man page specifies HOST_NAME_MAX as 64. The double-underscore byte order macros and TEMP_FAILURE_RETRY macro follow the Linux and GNU C library conventions. Assisted-by: Automated tooling, human reviewed.