[Bug algol68/123847] Uninitialized public string variable in a module

[mnabipoor at gnu dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123847

--- Comment #2 from Mohammad-Reza Nabipoor <mnabipoor at gnu dot org> ---
Further investigation showed that it has nothing to do with module
initialization.

This is a simpler reproducer (particular program):

(
  string s;
  string t = (s /= "" | "") + "";

  skip
)

It's the else part of `(s /= "" | "")' which is generating a null string,
instead of an empty string.