Question

I have something like this:

void Test(void)
{
    char errorMessage[256];

    spintf(errorMessage,... blablabla);
    throw new CustomException(errorMessage);
}

Will this be a memory leak because errorMessage will be not freed? Or will this cause an exception when accessing the message of the exception inside a try{}catch because the errorMessage has been freed when going out from the function¿?

Thanks in advance.

Answer 1

The memory of errorMessage will already be freed when accessed by the catch handler. However, you could just copy it into a std::string in CustomException‘s constructor.

A memory leak, on the other hand, could be caused by the exception itself, since you put it on the heap. This is not necessary.