>From previous times we have FTensor https://gcc.gnu.org/testing/testing-ftensor.html documented as one of the ways to test GCC.
Alas http://www.wlandry.net/Projects/FTensor has been down for a while, and there does not appear to be a new location? Is anyone actually still using FTensor to test GCC (or otherwise)? I'm wondering whether to simply delete that page... Gerald