From e879a0371ba7ef99da2d82547823c3f96b445fdb Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Wed, 20 Oct 2010 11:38:30 +0000
Subject: * Use the Boehm garbage collector to reclaim unused memory in the Nix
   expression evaluator.

---
 src/libexpr/eval.hh | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/libexpr/eval.hh')

diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh
index 501ac93d01..d74a035062 100644
--- a/src/libexpr/eval.hh
+++ b/src/libexpr/eval.hh
@@ -7,6 +7,8 @@
 
 #include <map>
 
+#include <gc/gc_allocator.h>
+
 
 namespace nix {
 
@@ -16,7 +18,7 @@ struct Env;
 struct Value;
 struct Attr;
 
-typedef std::map<Symbol, Attr> Bindings;
+typedef std::map<Symbol, Attr, std::less<Symbol>, gc_allocator<std::pair<const Symbol, Attr> > > Bindings;
 
 
 typedef enum {
@@ -313,6 +315,7 @@ private:
     char * deepestStack; /* for measuring stack usage */
     
     friend class RecursionCounter;
+    friend class ExprOpUpdate;
 };
 
 
-- 
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