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-rw-r--r--src/libstore/pathlocks.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libstore/pathlocks.cc b/src/libstore/pathlocks.cc
index fecd636877af..620c9a6b752d 100644
--- a/src/libstore/pathlocks.cc
+++ b/src/libstore/pathlocks.cc
@@ -54,6 +54,8 @@ bool lockFile(int fd, LockType lockType, bool wait)
             checkInterrupt();
             if (errno != EINTR)
                 throw SysError(format("acquiring/releasing lock"));
+            else
+                return false;
         }
     } else {
         while (fcntl(fd, F_SETLK, &lock) != 0) {