read into array Segfaults

[Curtis Doty]

I did a stupid thing. Tried to read into an array--which is indexed--but 
the variable is already an associative array.

  declare -A foo
  read -a foo <<<bar
The above should error instead of Segfault, yes?

It's reproducible on all versions of bash-4 that support associative 
array declaration. And verified on Debian, Fedora, Gentoo...

../C