fn testOverlongUtf8Codepoint() !void 753
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760fn testOverlongUtf8Codepoint() !void {
try testError("\xc0\x80", error.Utf8OverlongEncoding);
try testError("\xc1\xbf", error.Utf8OverlongEncoding);
try testError("\xe0\x80\x80", error.Utf8OverlongEncoding);
try testError("\xe0\x9f\xbf", error.Utf8OverlongEncoding);
try testError("\xf0\x80\x80\x80", error.Utf8OverlongEncoding);
try testError("\xf0\x8f\xbf\xbf", error.Utf8OverlongEncoding);
}