1.1 --- a/lemon/lemon_reader.h	Wed Oct 26 11:10:18 2005 +0000
     1.2 +++ b/lemon/lemon_reader.h	Fri Oct 28 08:40:42 2005 +0000
     1.3 @@ -409,6 +409,9 @@
     1.4      LemonReader(const std::string& filename) 
     1.5        : is(0), own_is(true) {
     1.6        is = new std::ifstream(filename.c_str());
     1.7 +      if (is->fail()) {
     1.8 +	throw FileOpenError(filename);
     1.9 +      }
    1.10      }
    1.11  
    1.12      /// \brief Desctructor for LemonReader.