ICE: librustc_trans/mir/constant.rs:682: Unexpected non-fat-pointer operand

[fenollp]

Here is the Travis job that fails: https://travis-ci.org/fenollp/minrs/jobs/190200414
Which is part of this build https://travis-ci.org/fenollp/minrs/builds/190200409

$ rustc --version
rustc 1.14.0 (e8a012324 2016-12-16)
$ cargo --version
cargo 0.15.0-nightly (298a012 2016-12-20)

This only happens on i686-apple-darwin & on Travis' OSX hardware.

Possibly linked: #38727 #16383 #37437 #38735

[nagisa]

Inline assembly cannot be an issue as this is an ICE on stable rustc. #38727 is fixed on nightly, so you’ll have to test/do travis run on i686 apple with nightly rustc.

[fenollp]

Here's a Travis run on nightly rustc with i686 apple platform: https://travis-ci.org/fenollp/minrs/jobs/190236515#L233

That bug looks fixed. However now I have

error: internal compiler error: /Users/rustbuild/src/rust-buildbot/slave/nightly-dist-rustc-mac/build/src/librustc_trans/mir/constant.rs:682: Unexpected non-fat-pointer operand

which Google doesn't seem to know about!

[nagisa]

cc @eddyb @Mark-Simulacrum stuff related to type_is_immediate change could have caused this.

[eddyb]

#38854 hasn't landed so it's not that. @dotdash may have also ran into this but I'm not sure.

[nikomatsakis]

So all it takes to reproduce is building https://github.com/fenollp/minrs on an i686-mac?

[nikomatsakis]

Or must it specifically be run on travis? If so, we should try to isolate what is different there!

[nikomatsakis]

Assigning to @pnkfelix for now, who will attempt to reproduce with a cross-compile.