HexFiendling, "File Data, Multiple Views" fails on 10.9 about hexfiend HOT 3 CLOSED

// clang test.c -framework CoreFoundation -framework ApplicationServices
#include <CoreFoundation/CoreFoundation.h>
#include <ApplicationServices/ApplicationServices.h>
#include <stdio.h>

// little endian utf16 data
// Not a minimal example, just data I ran into
char data[110] = "\x00\x00\x08\x00\x09\x00\x0A\x00\x20\x00\x33\x00\x37\x00\x40\x00\x41\x00\x42\x00\x43\x00\x44\x00\x45\x00\x4F\x00\x50\x00\x51\x00\x54\x00\x58\x00\x5A\x00\x5F\x00\x60\x00\x61\x00\x63\x00\x64\x00\x65\x00\x66\x00\x67\x00\x68\x00\x69\x00\x6A\x00\x6D\x00\x6E\x00\x6F\x00\x70\x00\x72\x00\x73\x00\x74\x00\x75\x00\x78\x00\x7A\x00\xC4\x00\xE0\x00\xF5\x00\xB4\x00\x1E\x22\xBB\x00\xC0\x00\x53\x01\xFF\x00\x21\x20\xCC\x00\xD2\x00\xD9\x02\xDB\x02\xC7\x02";

int main() {
    CTFontRef fontRef = CTFontCreateWithName(CFSTR("Monaco"), 10.0, NULL);
    CGGlyph glyphs[55];

    // Why should this fail...
    // (This call is exactly what HexFiendling does and expects to return true.)
    // (This call works if 55 is changed to <= 16, but fails for >= 17)
    puts(CTFontGetGlyphsForCharacters(fontRef, ((const UniChar*)data), glyphs, 55) ? "success" : "fail");

    // When these succeed?
    puts(CTFontGetGlyphsForCharacters(fontRef, ((const UniChar*)data), glyphs, 16) ? "success" : "fail");
    puts(CTFontGetGlyphsForCharacters(fontRef, ((const UniChar*)data)+16, glyphs+16, 55-16) ? "success" : "fail");

    // At least on 10.9.1, I get "fail\nsuccess\nsuccess"!

    return 0;
}