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-rw-r--r--src/libstore/remote-store.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index d3c05f0df4b1..11712b48774b 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -141,6 +141,7 @@ void RemoteStore::connectToDaemon()
     fdSocket = socket(PF_UNIX, SOCK_STREAM, 0);
     if (fdSocket == -1)
         throw SysError("cannot create Unix domain socket");
+    closeOnExec(fdSocket);
 
     string socketPath = settings.nixStateDir + DEFAULT_SOCKET_PATH;