From 63a5be07e252904eeb83a88dce37008e1affec1a Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Mon, 4 Jan 2016 11:32:46 +0100
Subject: [PATCH] daemon: ~PathLocks(): Handle exceptions.

Otherwise, since the call to write a "d" character to the lock file
can fail with ENOSPC, we can get an unhandled exception resulting in a
call to terminate().
---
 nix/libstore/pathlocks.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nix/libstore/pathlocks.cc b/nix/libstore/pathlocks.cc
index 830858ff8d..9797ddd7ab 100644
--- a/nix/libstore/pathlocks.cc
+++ b/nix/libstore/pathlocks.cc
@@ -162,7 +162,11 @@ bool PathLocks::lockPaths(const PathSet & _paths,
 
 PathLocks::~PathLocks()
 {
-    unlock();
+    try {
+        unlock();
+    } catch (...) {
+        ignoreException();
+    }
 }