Can exceptions automatically provide details about their environment?

Question

What I would like to do: ``` struct A { void f() { throw auto_exception("something went wrong"); } } class Foo { void bar() { throw auto_exception("step 2 failed"); } } ``` The exception's `what()` string should read, respectively: ``` "Exception in A::f(). something went wrong" "Exception in Foo::bar(). step 2 failed" ``` Is this possible?

Accepted Answer

Presuming that your C++ compiler supports `__FUNCTION__` (or `__func__` in C++11) you can define AUTO_EXCEPTION as:

```
#define AUTO_EXCEPTION( msg ) std::runtime_error( std::string(__FUNCTION__) + ": " + msg )
```

Can exceptions automatically provide details about their environment?

Solution

Problem