Compress Bug report

[weifeihaung]

Bug report or feature request?

Uglify version (uglifyjs -V)
3.4.9
JavaScript input

utf8.write = function utf8_write(string, buffer, offset) {
    var start = offset,
        c1, // character 1
        c2; // character 2
    for (var i = 0; i < string.length; ++i) {
        c1 = string.charCodeAt(i);
        if (c1 < 128) {
            buffer[offset++] = c1;
        } else if (c1 < 2048) {
            buffer[offset++] = c1 >> 6       | 192;
            buffer[offset++] = c1       & 63 | 128;
        } else if ((c1 & 0xFC00) === 0xD800 && ((c2 = string.charCodeAt(i + 1)) & 0xFC00) === 0xDC00) {
            c1 = 0x10000 + ((c1 & 0x03FF) << 10) + (c2 & 0x03FF);
            ++i;
            buffer[offset++] = c1 >> 18      | 240;
            buffer[offset++] = c1 >> 12 & 63 | 128;
            buffer[offset++] = c1 >> 6  & 63 | 128;
            buffer[offset++] = c1       & 63 | 128;
        } else {
            buffer[offset++] = c1 >> 12      | 224;
            buffer[offset++] = c1 >> 6  & 63 | 128;
            buffer[offset++] = c1       & 63 | 128;
        }
    }
    return offset - start;
};

The uglifyjs CLI command executed or minify() options used.
uglifyjs utf8_write.js -c -m -b -o utf8_write.min.js
JavaScript output or error produced.

utf8.write = function(r, t, e) {
    for (var n, o, a = e, c = 0; c < r.length; ++c) 
    n = r.charCodeAt(c), 
    t[e++] = n < 128 ? n : (t[e++] = n < 2048 ? n >> 6 | 192 : (55296 == (64512 & n) && 56320 == (64512 & (o = r.charCodeAt(c + 1))) ? (n = 65536 + ((1023 & n) << 10) + (1023 & o), 
    ++c, t[e++] = n >> 18 | 240, t[e++] = n >> 12 & 63 | 128) : t[e++] = n >> 12 | 224, 
    n >> 6 & 63 | 128), 63 & n | 128);
    return e - a;
};

project.zip