For reference we found that the testsuite does timeout the test-case
and produces;
```
Running target unix
Using /usr/share/dejagnu/baseboards/unix.exp as board description file
for target.
Using /usr/share/dejagnu/config/unix.exp as generic interface file for target.
Using /home/runner/work/gccrs
Hi everyone,
We merged a new builtin macro recently and during the code review we
missed a case where the code produces an infinite loop and so we
raised: https://github.com/Rust-GCC/gccrs/issues/1102
The GitHub CI did not seem to catch this issue, I am assuming dejagnu
timeout the test case and
