From 8ca4a001cb9e8ca2556c26a1b559b0322a8fb46a Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Fri, 16 Apr 2010 14:03:26 +0000
Subject: * Improve sharing a bit.

---
 src/libexpr/primops.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/libexpr/primops.cc')

diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index ae17506ceed9..c4495e81db49 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -733,7 +733,7 @@ static void prim_listToAttrs(EvalState & state, Value * * args, Value & v)
         if (j == v2.attrs->end())
             throw TypeError("`value' attribute missing in a call to `listToAttrs'");
 
-        (*v.attrs)[state.symbols.create(name)] = j->second; // !!! sharing?
+        mkCopy((*v.attrs)[state.symbols.create(name)], j->second);
     }
 }
 
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