diff options
Diffstat (limited to 'src/test/ui/inference/lub-glb-with-unbound-infer-var.rs')
-rw-r--r-- | src/test/ui/inference/lub-glb-with-unbound-infer-var.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/ui/inference/lub-glb-with-unbound-infer-var.rs b/src/test/ui/inference/lub-glb-with-unbound-infer-var.rs new file mode 100644 index 000000000..c9e117089 --- /dev/null +++ b/src/test/ui/inference/lub-glb-with-unbound-infer-var.rs @@ -0,0 +1,15 @@ +// run-pass +// Test for a specific corner case: when we compute the LUB of two fn +// types and their parameters have unbound variables. In that case, we +// wind up relating those two variables. This was causing an ICE in an +// in-progress PR. + +fn main() { + let a_f: fn(_) = |_| (); + let b_f: fn(_) = |_| (); + let c_f = match 22 { + 0 => a_f, + _ => b_f, + }; + c_f(4); +} |