[Bug testsuite/70227] New: pr69589 does not check for -rdynamic availability

[thopre01 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70227

            Bug ID: 70227
           Summary: pr69589 does not check for -rdynamic availability
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
          Assignee: unassigned at gcc dot gnu.org
          Reporter: thopre01 at gcc dot gnu.org
  Target Milestone: ---
            Target: arm-none-eabi

g++.dg/lto/pr69589 fails on trunk for arm-none-eabi target with the following
error:

unrecognized command line option '-rdynamic'

The reason is that rdynamic is not an available option for bare metal targets.
The test could add an effective target requirement to avoid creating a FAIL in
such cases or possibly add an xfail for *-none-*.