[Warning] reference to local variable returned

[curious2007]

Hello,

The following function gives me a warning:

template <class V, class AI, class I, class S>
V& AssocArray<V, AI, I, S>::operator [] (const AI& index)
{

iterator it = internal_array.find(index);

V mapIndex = (*it).second;
return mapIndex;


}

[Warning] reference to local variable `mapIndex' returned

I could not figure out the problem with mapIndex here.

[phiefer3]

Hello,

The following function gives me a warning:

template <class V, class AI, class I, class S>
V& AssocArray<V, AI, I, S>::operator [] (const AI& index)
{

iterator it = internal_array.find(index);

V mapIndex = (*it).second;
return mapIndex;


}

[Warning] reference to local variable `mapIndex' returned

I could not figure out the problem with mapIndex here.

I'm not positive, but I think it might be because you are returning the address (reference) of a variable declared in the function. Once the function ends (after the return statement) that variable will go out of scope and can't be accessed. And so you're getting a warning because you'll essentially have the address of a non-existent variable.

Just get rid of the last 2 lines and replace them with this:

return (*it).second;

or this should work as well:

return it->second;

[curious2007]

Ok, thanks. I don't understand what happened but once I restarted the compiler it did not give me any errors.