update ada-idna to v0.3.1

[anonrig]

No description provided.

[anonrig]

@lemire It seems simdjson is failing: "JSON error: STRING_ERROR: Problem while parsing a string near"

[anonrig]

@lemire These 2 tests are offending simdjson: 32f622e

[anonrig]

Now fuzzer seems to be broken with the error:

idna.cc:(.text.LLVMFuzzerTestOneInput[LLVMFuzzerTestOneInput]+0x285): undefined reference to `ada::idna::ascii_has_upper_case(char*, unsigned long)'

[lemire]

@anonrig The following

{
    "comment": "V7; A3",
    "input": "a\ud900z",
    "output": null
  }

is not valid JSON. There is no way to represent "a\ud900z" as a valid Unicode string.

You have a few options:

1. You skip these tests, do not call FAIL. That's what we do in idna currently.
2. You can call get_wobbly_string() to get a WTF-8 input. Note that I am not sure that the standard tells us what to do with non-valid UTF-8 and all our functions are defined as expecting valid UTF-8. We could validate our inputs (reject invalid Unicode inputs) but that must be deliberate.

[anonrig]

Ah I see @lemire. Thanks. I recommend omitting the error. What do you think about the fuzzing error? I believe it occurs due to the constexpr function, but I don't have a solution other than removing the constexpr qualifier, which is not ideal.