1 files changed, 10 insertions, 10 deletions

diff --git a/src/libstore/content-address.cc b/src/libstore/content-address.cc
index d68c60f4f..cb73f6eb3 100644
--- a/src/libstore/content-address.cc
+++ b/src/libstore/content-address.cc
@@ -31,11 +31,11 @@ std::string makeFixedOutputCA(FileIngestionMethod method, const Hash & hash)
 std::string renderContentAddress(ContentAddress ca)
 {
     return std::visit(overloaded {
-        [](TextHash th) {
+        [](TextHash & th) {
             return "text:"
                 + th.hash.to_string(Base32, true);
         },
-        [](FixedOutputHash fsh) {
+        [](FixedOutputHash & fsh) {
             return "fixed:"
                 + makeFileIngestionPrefix(fsh.method)
                 + fsh.hash.to_string(Base32, true);
@@ -46,10 +46,10 @@ std::string renderContentAddress(ContentAddress ca)
 std::string renderContentAddressMethod(ContentAddressMethod cam)
 {
     return std::visit(overloaded {
-        [](TextHashMethod &th) {
+        [](TextHashMethod & th) {
             return std::string{"text:"} + printHashType(htSHA256);
         },
-        [](FixedOutputHashMethod &fshm) {
+        [](FixedOutputHashMethod & fshm) {
             return "fixed:" + makeFileIngestionPrefix(fshm.fileIngestionMethod) + printHashType(fshm.hashType);
         }
     }, cam);
@@ -107,12 +107,12 @@ ContentAddress parseContentAddress(std::string_view rawCa) {
 
     return std::visit(
         overloaded {
-            [&](TextHashMethod thm) {
+            [&](TextHashMethod & thm) {
                 return ContentAddress(TextHash {
                     .hash = Hash::parseNonSRIUnprefixed(rest, htSHA256)
                 });
             },
-            [&](FixedOutputHashMethod fohMethod) {
+            [&](FixedOutputHashMethod & fohMethod) {
                 return ContentAddress(FixedOutputHash {
                     .method = fohMethod.fileIngestionMethod,
                     .hash = Hash::parseNonSRIUnprefixed(rest, std::move(fohMethod.hashType)),
@@ -140,10 +140,10 @@ std::string renderContentAddress(std::optional<ContentAddress> ca)
 Hash getContentAddressHash(const ContentAddress & ca)
 {
     return std::visit(overloaded {
-        [](TextHash th) {
+        [](const TextHash & th) {
             return th.hash;
         },
-        [](FixedOutputHash fsh) {
+        [](const FixedOutputHash & fsh) {
             return fsh.hash;
         },
     }, ca);
@@ -151,10 +151,10 @@ Hash getContentAddressHash(const ContentAddress & ca)
 
 ContentAddressWithReferences caWithoutRefs(const ContentAddress & ca) {
     return std::visit(overloaded {
-        [&](TextHash h) -> ContentAddressWithReferences {
+        [&](const TextHash & h) -> ContentAddressWithReferences {
             return TextInfo { h, {}};
         },
-        [&](FixedOutputHash h) -> ContentAddressWithReferences {
+        [&](const FixedOutputHash & h) -> ContentAddressWithReferences {
             return FixedOutputInfo { h, {}};
         },
     }, ca);