[Q-e-developers] Undefined variables in espresso

[Vittorio Zecca]

Good to know VdW is not worth looking at.

In general about uninitialized variables, I agree it is not generally
serious, but still these cases should be investigated and fixed.
Initializing real variables to NaN, with g95?, does not work for all
variables, I am going to memory now, also the fact that I found many
of them is the proof that the g95 mechanism is not exhaustive. And
thay are really used, I am showing all cases of actual access to
uninitialized variables, not hypotetical.
What is worse, accessing an uninitialized variable may mean that
because of a logical error, a variable has not been given a value,
when it should have, and getting zero may not be the correct fix. I
hope I explained myself.