From 2ba7e776b611b797b00e5a2cd02584c5993514d5 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Wed, 29 May 2019 14:49:02 +0200
Subject: [PATCH] FIXME

---
 src/librustc_mir/interpret/operand.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librustc_mir/interpret/operand.rs b/src/librustc_mir/interpret/operand.rs
index 130343d0b2f..2fc7d65d655 100644
--- a/src/librustc_mir/interpret/operand.rs
+++ b/src/librustc_mir/interpret/operand.rs
@@ -512,7 +512,7 @@ impl<'a, 'mir, 'tcx, M: Machine<'a, 'mir, 'tcx>> InterpretCx<'a, 'mir, 'tcx, M>
         };
         // Early-return cases.
         match val.val {
-            ConstValue::Param(_) => return err!(TooGeneric),
+            ConstValue::Param(_) => return err!(TooGeneric), // FIXME(oli-obk): try to monomorphize
             ConstValue::Unevaluated(def_id, substs) => {
                 let instance = self.resolve(def_id, substs)?;
                 return Ok(OpTy::from(self.const_eval_raw(GlobalId {