A good point. Definitely any build environment fingerprints are useful data, like compiler and linker quirks. What I should have said was that a different comp

A good point. Definitely any build environment fingerprints are useful data, like compiler and linker quirks. What I should have said was that a different compiler (and/or version) can filter the original input in different ways, because of optimizations and other code transforms (including non-breaking codegen bugs).