OOM when evaluating `for<'b> &'a &'a (): 'b`

[aliemjay]

The following test doesn't terminate. Same when when evaluating for<'b> &'b &'b (): 'a.

diff --git a/src/rust/test/wf--outlives.rkt b/src/rust/test/wf--outlives.rkt
index 0e11536..5d1623a 100644
--- a/src/rust/test/wf--outlives.rkt
+++ b/src/rust/test/wf--outlives.rkt
@@ -16,6 +16,9 @@
                                      (struct NoRef[(type T) (lifetime a)]
                                        where []
                                        { })
+                                     (struct NestedRef[(lifetime a) (lifetime b)]
+                                       where [(a : b)]
+                                       { })
                                      })] C)))
 
     ]
@@ -47,5 +50,16 @@
                 )
              )
             ))
+
+   (traced '()
+           (test-term-false
+            (rust:can-prove-where-clause-in-program
+             Rust/Program
+             (∀ [(lifetime a)]
+                where []
+                (for[(lifetime b)] ((NestedRef < a a >) : b))
+                )
+             )
+            ))
    )
   )

[shua]

This doesn't seem relevant to the current rust codebase anymore. I guess this can be closed?

[lcnr]

Given that this is a test case that caused a hang in the old impl, it may be useful to add it to the new one to make sure we don't encounter the same issue

[shua]

okay, I can take a look to see if it's represented in the current test cases