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ff8f3814cc
Instead of doing anything reasonable, Utf8CodePointIterator returned invalid code points, for example U+123456. However, many callers of this iterator assume that a code point is always at most 0x10FFFF. In fact, this is one of two reasons for the following OSS Fuzz issue: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49184 This is probably a very old bug. In the particular case of URLParser, AK::is_url_code_point got confused: return /* ... */ || code_point >= 0xA0; If code_point is a "code point" beyond 0x10FFFF, this violates the condition given in the preceding comment, but satisfies the given condition, which eventually causes URLParser to crash. This commit fixes *only* the erroneous UTF-8 decoding, and does not fully resolve OSS-Fuzz#49184.