Is this a bug with “Longest Substring Without Repeating Characters”?

[wangkuiyi]

leetcode/algorithms/cpp/longestSubstringWithoutRepeatingCharacters/longestSubstringWithoutRepeatingCharacters.cpp

Line 47 in 725a380

memset(m, -1, sizeof(m));

I’d thought that memset initialize bytes but not integers?

[Dev-XYS]

Setting all the bytes of a integer to -1 (0xFF) results in the integer becoming 0xFFFFFFFF (-1).