https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94317
--- Comment #5 from David Binderman <dcb314 at hotmail dot com> --- I am not sure how much testing this code got before it was put into git. Can the author please indicate where the test cases for this code are in the gcc trunk testsuite. I'll give them some exercise. In the somewhat worrying event that there are no test cases, then perhaps it might be wise to add some to aid future developers.