avoid a string copy

FlexibleSUSY · Mar 21, 2017 · 9d4aa0e · 9d4aa0e
1 parent d261178
commit 9d4aa0e
Showing 1 changed file with 6 additions and 6 deletions.
diff --git a/src/database.hpp b/src/database.hpp
@@ -45,18 +45,18 @@ class Database {
 
    class DisabledSQLiteError : Error {
    public:
-      explicit DisabledSQLiteError(std::string msg_) : msg(msg_) {}
-      virtual ~DisabledSQLiteError() {}
-      virtual std::string what() const { return msg; }
+      explicit DisabledSQLiteError(const std::string& msg_) : msg(msg_) {}
+      virtual ~DisabledSQLiteError() = default;
+      std::string what() const override { return msg; }
    private:
       std::string msg;
    };
 
    class SQLiteReadError : Error {
    public:
-      explicit SQLiteReadError(std::string msg_) : msg(msg_) {}
-      virtual ~SQLiteReadError() {}
-      virtual std::string what() const { return msg; }
+      explicit SQLiteReadError(const std::string& msg_) : msg(msg_) {}
+      virtual ~SQLiteReadError() = default;
+      std::string what() const override { return msg; }
    private:
       std::string msg;
    };