[Bug ada/67836] Exceptions with tracebacks in task rendezvous cause STORAGE_ERROR

[nicolas.boulenguez at free dot fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67836

--- Comment #2 from nicolas.boulenguez at free dot fr ---
The Debian URL above provides a shorter instance of (probably) the same bug
within a single task.