IssueTracker

Android ndk r10c.
wcsstr fails to find substring in almost all cases.

Steps to reproduce the problem:
const wchar_t* searchRes = wcsstr(L"romrom", L"rom");
assert(searchRes != NULL);

What happened:
assertion failure.

I checked out code from master branch. Here is the problem summary.

wchar_t *wcsstr(const wchar_t *s, const wchar_t *find) {
    wchar_t find_c;
//find_c == 'r'
    find_c = *find++;
//find points to "om" string here
    if (!find_c)
        return (wchar_t*)s;

    size_t find_len = wcslen(find);
    for (;;) {
        wchar_t* p = wcschr(s, find_c);
//p points to "romrom" string here
        if (p == NULL)
            return NULL;
//and now we compare p == "romrom" and find == "om", find_len == 2
        if (!wmemcmp(p, find, find_len))
            return p;
        s = p + 1;
    }
    return NULL;
}

The fix is
if (!wmemcmp(p+1, find, find_len))
//------------^