[Bug libstdc++/78677] New: __gthread_key_create assumed not to fail in eh_globals.cc

[chrisj at rtems dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78677

            Bug ID: 78677
           Summary: __gthread_key_create assumed not to fail in
                    eh_globals.cc
           Product: gcc
           Version: 6.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: chrisj at rtems dot org
  Target Milestone: ---

Some operating system, for example RTEMS, may fail to create a POSIX key if not
configured with enough resources. The lack of any error reporting in
__eh_globals_init::__eh_globals_init() means exceptions are silently switched
from thread safe to not being thread safe and this is not a concern for RTEMS.

A way to report errors would be welcomed by RTEMS. We could hook this is a
fatal error so the user is aware there is a critical issue that needs to be
addressed.

Thanks
Chris