define
    assert(condition) = {
        if not (condition) then
        debug     call BJDebugMsg("Assertion Failure: `condition`")
        debug     MACRO_CRASHER = MACRO_CRASHER //thread crash
        endif
    }
...

integer MACRO_CRASHER

#define assert(_Expression) (void)( (!!(_Expression)) ||
                   (_wassert(_CRT_WIDE(#_Expression), _CRT_WIDE(__FILE__), __LINE__), 0) )

struct AssertionFailed {
    AssertionFailed(const char * fi, int li, const char * r):f(fi), l(li), reason(r) {}
    ~AssertionFailed() {}
    const char * f; int l;
    const char * reason;
};

#define IFDEBUG(cond)\
    if(cond){\
    throw AssertionFailed(__FILE__,__LINE__,#cond);}

#define RUNDEBUG(test)\
    try { test; }\
    catch(AssertionFailed e) {\
    std::cout << "[debug]: [" << e.l << "] " << e.f << std::endl << "  " << e.reason << std::endl;\
    imtestingsuccess = false; }

//test.cpp
int strlen(const char * str) {
    int i;
    IFDEBUG(str == NULL); //line 3
    for(i=0; str[i]!=0; ++i) {}
    return i;
}

void test() {
    int a;
    RUNDEBUG(a = strlen(NULL));
}