"Invalid cast" with log ret

[jruderman]

fn f() { log ret; }
fn main() { }

Assertion failed: (S->getType()->isPointerTy() && "Invalid cast"), function getPointerCast, file Constants.cpp, line 1275.

[marijnh]

The patch caused several issues. I've reverted it for now.

[jruderman]

I guess this was fixed for good in graydon@4204845. I added this issue's testcase, plus a few more, in graydon@7b1a3bb.

[catamorphism]

I'm not sure exactly what happened here, but the unreachable-code.rs test had disappeared from the repo. I re-added (and updated) it, and it works, except for the last function (fail_then_concat). I'll open up a new bug for that.