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-rw-r--r--third_party/nix/src/libutil/archive.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/third_party/nix/src/libutil/archive.cc b/third_party/nix/src/libutil/archive.cc
index 6583dc20b899..32bad07f22da 100644
--- a/third_party/nix/src/libutil/archive.cc
+++ b/third_party/nix/src/libutil/archive.cc
@@ -145,7 +145,7 @@ void dumpString(const std::string& s, Sink& sink) {
        << "contents" << s << ")";
 }
 
-static SerialisationError badArchive(string s) {
+static SerialisationError badArchive(const string& s) {
   return SerialisationError("bad archive: " + s);
 }