Things to commit just before leaving your job

preprocessor_fun.h

// 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.
//
// In case it's not clear: I am not suggesting you *actually* do this!


// 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 memcpy strncpy
#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

oh you got me i actually tested that. good job, outplayed me 👍

That's pure evill, pure.

#define malloc(x) malloc((x)-__LINE__)

#define malloc(x) malloc((x)-((rand()%100<98)?0:1))

#define malloc(x) alloca(x * (1 << 15)) 

Have fun smashing some stacks on heap allocations. :)

#define malloc(x) malloc((x)-1)

#define auto char

Some good ones I made

// ReSharper disable CppUnusedIncludeDirective

#pragma once

// This file is INTENDED to be evil.


// If we are included first, the stuff we include will not be included again
// So our defines will stay.

// If not, we will undef them anyway.

// It's a win-win

# include <stdlib.h>
#include <stdnoreturn.h>
#include <setjmp.h>


void noreturn __stack_chk_fail(void); // NOLINT(*-reserved-identifier)

#undef NULL
#define NULL (__stack_chk_fail(),((void*) 0))


// We need a jump buffer for more evil operations in the future.
#define int static jmp_buf _jbuf; \
    int

// Also invoke side effects here.
#define if(orig) if(setjmp(_jbuf),((orig)&&(orig)))

#define else longjmp(_jbuf, 1);