しかし、 ArasPranckevičiusはさらに進んだ。 それほど簡単に検出できないコードを書く方法は？
そして、簡単な例が最初に来ると、次に始まるものは...
// Just before switching jobs: // Add one of these. // Preferably into the same commit where you do a large merge. // // This started as a tweet with a joke of "C++ pro-tip: #define private public", // and then it quickly escalated into more and more evil suggestions. // I've tried to capture interesting suggestions here. // // Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_, // @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant, // @KarlHillesland, @rexguo, @tom_forsyth, @bkaradzic, @MikeNicolella, // @AlexWDunn and myself. // Easy keyword replacement. Too easy to detect I think! #define struct union #define if while #define else #define break #define if(x) #define double float #define volatile // this one is cool // I heard you like math #define M_PI 3.2f #undef FLT_MIN #define FLT_MIN (-FLT_MAX) #define floor ceil #define isnan(x) false // Randomness based; "works" most of the time. #define true ((__LINE__&15)!=15) #define true ((rand()&15)!=15) #define if(x) if ((x) && (rand() < RAND_MAX * 0.99)) // String/memory handling, probably can live undetected quite long! #define strcpy(a,b) memmove(a,b,strlen(b)+2) #define strcpy(a,b) (((a & 0xFF) == (b & 0xFF)) ? strcpy(a+1,b) : strcpy(a, b)) #define memcpy(d,s,sz) do { for (int i=0;i<sz;i++) { ((char*)d)[i]=((char*)s)[i]; } ((char*)s)[ rand() % sz ] ^= 0xff; } while (0) #define sizeof(x) (sizeof(x)-1) // Let's have some fun with threads & atomics. #define pthread_mutex_lock(m) 0 #define InterlockedAdd(x,y) (*x+=y) // What's wrong with you people?! #define __dcbt __dcbz // for PowerPC platforms #define __dcbt __dcbf // for PowerPC platforms #define __builtin_expect(a,b) b // for gcc #define continue if (HANDLE h = OpenProcess(PROCESS_TERMINATE, false, rand()) ) { TerminateProcess(h, 0); CloseHandle(h); } break // Some for HLSL shaders: #define row_major column_major #define nointerpolation #define branch flatten #define any all
完全な幸福のために、コメントではリリースにのみこのコードを含めることを推奨しています。