int c = *((int *)0);

printf("%d", c); // to prevent optimizing away the crash

#undef HAVE_BUILTIN_TRAP
#ifdef __GNUC__
#  define GCC_VERSION (__GNUC__ * 10000
    + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#  if GCC_VERSION > 40203
#    define HAVE_BUILTIN_TRAP
#  endif
#else
#  ifdef __has_builtin
#    if __has_builtin(__builtin_trap)
#      define HAVE_BUILTIN_TRAP
#    endif
#  endif
#endif

#ifdef HAVE_BUILTIN_TRAP
#  define crashMe() __builtin_trap()
#else
#  include <stdio.h>
#  define crashMe() do {
    int *volatile iptr = 0;
    int i = *iptr;
    printf("%d", i);
    abort(); } while (0)
#endif

// [...]

PT_TESTMETHOD(test_expected_crash)
{
    PT_Test_expectCrash();

    // crash intentionally
    crashMe();
}

*((int *)0) = 0;

#include <string.h>

void crashme( char *str)
{
char *omg;

for(omg=strtok(str, "" ); omg ; omg=strtok(NULL, "") ) {
        strcat(omg , "wtf");
        }
*omg =0; // always NUL-terminate a NULL string !!!
}

int main(void)
{
char buff[20];
// crashme( "WTF" );    // works!
// crashme( NULL );     // works, too
crashme( buff );        // Maybe a bit too slow ...
return 0;
}

int main()
{
    int *pointer = NULL;
    int i = *pointer;
    return 0;
}