BREAK statement and octave 5

[Alice]

If I run the following code in Octave 4.x (on Mac) it works while in Octave 5.x 
it doesn’t.
I know that the break statement should work only for loops but until ref 5.0 it 
worked also for the if statements.
I’m not able to find this change in the release notes. Is there anyone who 
knows something more?
THNX
Marco


%% Input 
A=input('A=? ') %1e-8;
B=input('B=?') %2;
C=input('C=?') %1e-8;

%% A==0
if A==0
  'Error: 1'
  break
end

%% Delta
Delta=B^2-4*A*C;