Forgot this example when I changed the spec to ignore earlier
duplicated fields.
Change-Id: I9bc8d3e27201afd0d256aa4771b6420059fc68a7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8949
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
It turns out that the netencode spec requiring to ignore *later*
entries meant that every parser has to do an extra check for each
element, instead of just overriding the key in the hash map.
This leads to a situation where the simple implementation is the wrong
one, which would lead to very subtle problems in parsers (see also the
infamous “json duplicate record entry” problem which has been used for
various exploits in the past).
To be fair, exploits are still possible, but at least a `Map.fromList`
will be the right implementation (provided it folds from the left) now
instead of the wrong one.
Examples of the trivial implementation being now right:
Python:
> dict([("foo", 1), ("foo", 2)])
{'foo': 2}
Rust:
> println!("{:?}", HashMap::from([
("foo", 1),
("foo", 2)
]));
{"foo": 2}
Haskell:
> Data.Map.fromList [ ("foo", 1), ("foo", 2) ]
fromList [("foo",2)]
Change-Id: Ife9593956f4718e5e720f4f348c227e4f3a71e2d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5108
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: Profpatsch <mail@profpatsch.de>
