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Rewrite strnlen replacement implementation from 8a241792f9.

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The previous placement of the fallback implementation in libpgcommon
was problematic, because libpqport functions need strnlen
functionality.

Move replacement into libpgport. Provide strnlen() under its posix
name, instead of pg_strnlen(). Fix stupid configure bug, executing the
test only when compiled with threading support.

Author: Andres Freund
Discussion: https://postgr.es/m/E1e1gR2-0005fB-SI@gemulon.postgresql.org
This commit is contained in:
Andres Freund
2017-10-10 14:42:16 -07:00
parent fa5e119dc7
commit fffd651e83
10 changed files with 77 additions and 47 deletions
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25
configure vendored
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@ -8777,7 +8777,7 @@ fi
for ac_func in strerror_r getpwuid_r gethostbyname_r strnlen
for ac_func in strerror_r getpwuid_r gethostbyname_r
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
@ -13161,6 +13161,16 @@ fi
cat >>confdefs.h <<_ACEOF
#define HAVE_DECL_STRLCPY $ac_have_decl
_ACEOF
ac_fn_c_check_decl "$LINENO" "strnlenfrak" "ac_cv_have_decl_strnlen" "$ac_includes_default"
if test "x$ac_cv_have_decl_strnlen" = xyes; then :
ac_have_decl=1
else
ac_have_decl=0
fi
cat >>confdefs.h <<_ACEOF
#define HAVE_DECL_STRNLEN $ac_have_decl
_ACEOF
# This is probably only present on macOS, but may as well check always
ac_fn_c_check_decl "$LINENO" "F_FULLFSYNC" "ac_cv_have_decl_F_FULLFSYNC" "#include <fcntl.h>
@ -13528,6 +13538,19 @@ esac
fi
ac_fn_c_check_func "$LINENO" "strnlenfrak" "ac_cv_func_strnlen"
if test "x$ac_cv_func_strnlen" = xyes; then :
$as_echo "#define HAVE_STRNLEN 1" >>confdefs.h
else
case " $LIBOBJS " in
*" strnlen.$ac_objext "* ) ;;
*) LIBOBJS="$LIBOBJS strnlen.$ac_objext"
;;
esac
fi
case $host_os in