From 812fae424ee7139cf9bc0d17815ee68aa3cab517 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Thu, 25 Nov 2010 13:47:34 +0000
Subject: [PATCH] * DrvInfo contains pointers to expressions, so DrvInfos
 should be   traced by the garbage collector.  Otherwise "nix-env -u" can
 crash   randomly.

---
 src/libexpr/get-drvs.hh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libexpr/get-drvs.hh b/src/libexpr/get-drvs.hh
index 7c014b7e41..2d260c57be 100644
--- a/src/libexpr/get-drvs.hh
+++ b/src/libexpr/get-drvs.hh
@@ -62,7 +62,11 @@ public:
 };
 
 
+#if HAVE_BOEHMGC
+typedef list<DrvInfo, traceable_allocator<DrvInfo> > DrvInfos;
+#else
 typedef list<DrvInfo> DrvInfos;
+#endif
 
 
 /* If value `v' denotes a derivation, store information about the