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gh-95174: Handle missing dup() and constants in WASI (GH-95229)

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- check for ``dup()`` libc function
- handle missing ``F_DUPFD`` in ``dup2()`` replacement function
- add workaround for WASI libc bug in MSG_TRUNC
- ESHUTDOWN is missing, use EPIPE instead
- POLLPRI is missing, define as 0 (no-op)
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Christian Heimes 2022-07-26 11:16:51 +02:00 • committed by GitHub
parent e8f3e8f0ab
commit 0d35a59ce3
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12 changed files with 47 additions and 5 deletions
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configure.ac
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@ -4653,7 +4653,7 @@ fi
# checks for library functions
AC_CHECK_FUNCS([ \
accept4 alarm bind_textdomain_codeset chmod chown clock close_range confstr \
copy_file_range ctermid dup3 execv explicit_bzero explicit_memset \
copy_file_range ctermid dup dup3 execv explicit_bzero explicit_memset \
faccessat fchmod fchmodat fchown fchownat fdopendir fdwalk fexecve \
fork fork1 fpathconf fstatat ftime ftruncate futimens futimes futimesat \
gai_strerror getegid getentropy geteuid getgid getgrgid getgrgid_r \