From: christiaanb <christiaan.baaij@gmail.com>
Date: Tue, 8 Jun 2010 13:43:39 +0000 (+0200)
Subject: Do not function extract functions that still have free type variables
X-Git-Url: https://git.stderr.nl/gitweb?p=matthijs%2Fmaster-project%2Fc%CE%BBash.git;a=commitdiff_plain;h=a2b8cfae9cad1ad7040993f7f2458dd73fb968cd

Do not function extract functions that still have free type variables
---

diff --git a/clash/CLasH/Normalize.hs b/clash/CLasH/Normalize.hs
index ea171ca..4ce4ffa 100644
--- a/clash/CLasH/Normalize.hs
+++ b/clash/CLasH/Normalize.hs
@@ -380,7 +380,7 @@ funextract c expr@(App _ _) | is_var fexpr = do
     -- We could use is_applicable here instead of is_fun, but I think
     -- arguments to functions could only have forall typing when existential
     -- typing is enabled. Not sure, though.
-    doarg arg | not (is_simple arg) && is_fun arg = do
+    doarg arg | not (is_simple arg) && is_fun arg && not (has_free_tyvars arg) = do
       -- Create a new top level binding that binds the argument. Its body will
       -- be extended with lambda expressions, to take any free variables used
       -- by the argument expression.