rust-hg-core: use correct type for libc hostname buffer
The type of libc::c_char is u8 on aarch64 rather than i8, which causes
the use of a specifically-typed constant to fail.
Differential Revision: https://phab.mercurial-scm.org/D12373
#require test-repo
$ . "$TESTDIR/helpers-testrepo.sh"
Sanity check check-config.py
$ cat > testfile.py << EOF
> # Good
> foo = ui.config('ui', 'username')
> # Missing
> foo = ui.config('ui', 'doesnotexist')
> # Missing different type
> foo = ui.configint('ui', 'missingint')
> # Missing with default value
> foo = ui.configbool('ui', 'missingbool1', default=True)
> foo = ui.configbool('ui', 'missingbool2', False)
> # Inconsistent values for defaults.
> foo = ui.configint('ui', 'intdefault', default=1)
> foo = ui.configint('ui', 'intdefault', default=42)
> # Can suppress inconsistent value error
> foo = ui.configint('ui', 'intdefault2', default=1)
> # inconsistent config: ui.intdefault2
> foo = ui.configint('ui', 'intdefault2', default=42)
> EOF
$ cat > files << EOF
> mercurial/helptext/config.txt
> $TESTTMP/testfile.py
> EOF
$ cd "$TESTDIR"/..
$ "$PYTHON" contrib/check-config.py < $TESTTMP/files
foo = ui.configint('ui', 'intdefault', default=42)
conflict on ui.intdefault: ('int', '42') != ('int', '1')
at $TESTTMP/testfile.py:12:
undocumented: ui.doesnotexist (str)
undocumented: ui.intdefault (int) [42]
undocumented: ui.intdefault2 (int) [42]
undocumented: ui.missingbool1 (bool) [True]
undocumented: ui.missingbool2 (bool)
undocumented: ui.missingint (int)
New errors are not allowed. Warnings are strongly discouraged.
$ testrepohg files "set:(**.py or **.txt) - tests/**" | sed 's|\\|/|g' |
> "$PYTHON" contrib/check-config.py