Octave gcc problem (Homebrew Mac)

[Vic Norton]

Hi Sebastian,

I just did a brew upgrade and it killed octave. Here is the error message I get.
~$ octave
dyld: Library not loaded: /usr/local/opt/gcc/lib/gcc/6/libgfortran.3.dylib
  Referenced from: /usr/local/bin/octave-cli
  Reason: image not found
Abort trap: 6

Apparently the problem is that
  /usr/local/opt/gcc
has just become a symbolic link to
  /usr/local/Cellar/gcc/7.1.0
rather than the previous
  /usr/local/Cellar/gcc/6.3.0_1.
And a new libgfortran.4.dylib resides in the 7.1.0 version of gcc.

I hate to mess with Homebrew. I expect the problem might be fixed by forcing
  /usr/local/opt/gcc
to link to
  /usr/local/Cellar/gcc/6.3.0_1
as before, but it does seem that Homebrew’s octave-cli should be adjusted for 
the new address@hidden

What is your advice? Right now I am dead in the water.

Regards,

Vic