Make BuildLogUser reference constant.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/build_log.h b/src/build_log.h
index fc44854..fe81a85 100644
--- a/src/build_log.h
+++ b/src/build_log.h
@@ -29,7 +29,7 @@ struct Edge;
 struct BuildLogUser {
   /// Return if a given output no longer part of the build manifest.
   /// This is only called during recompaction and doesn't have to be fast.
-  virtual bool IsPathDead(StringPiece s) = 0;
+  virtual bool IsPathDead(StringPiece s) const = 0;
 };
 
 /// Store a log of every command ran for every build.
@@ -43,7 +43,7 @@ struct BuildLog {
   BuildLog();
   ~BuildLog();
 
-  bool OpenForWrite(const string& path, BuildLogUser& user, string* err);
+  bool OpenForWrite(const string& path, const BuildLogUser& user, string* err);
   bool RecordCommand(Edge* edge, int start_time, int end_time,
                      TimeStamp restat_mtime = 0);
   void Close();
@@ -79,7 +79,7 @@ struct BuildLog {
   bool WriteEntry(FILE* f, const LogEntry& entry);
 
   /// Rewrite the known log entries, throwing away old data.
-  bool Recompact(const string& path, BuildLogUser& user, string* err);
+  bool Recompact(const string& path, const BuildLogUser& user, string* err);
 
   typedef ExternalStringHashMap<LogEntry*>::Type Entries;
   const Entries& entries() const { return entries_; }