Joseph Ferano
b438a71031
A generic defn produces no Tast.fn, so the editor was told nothing had been installed and nothing had gone wrong. eval now expands a redefined generic name to its copies, and picks up any copy the running process was never built with - which is how a redefined caller reaching a generic at a new element type gets that copy built and loaded. C-x C-e is the path that could really go stale, and did: it checks against the live environment, so an expression naming a generic at an unused type generated a copy that existed in no program and the thunk called a symbol nothing defined. Marked and spliced. There was no cache to invalidate. program_with_env builds a fresh env every evaluation, so the instantiation cache cannot survive one; the test pins that rather than inventing machinery for it. A signature change reaches the session as a refusal about put!-i32, a name the source does not contain. It now says which generic it is a copy of, at which types, and that every copy changed together.
