fix tests/lac/la_vector_output

ofstream std::string constructor would require c++11

diff --git a/tests/lac/la_vector_output.cc b/tests/lac/la_vector_output.cc
index 0aeb7d89d391fec552da31ac041fd9a6b52a3da2..0e6211bcf5ed39786f02d7f7f0561538123c1f01 100644 (file)
--- a/tests/lac/la_vector_output.cc
+++ b/tests/lac/la_vector_output.cc
@@ -25,7 +25,7 @@
 
 void test()
 {
-  std::string filename("test.txt");
+  const char *filename = "test.txt";
   const unsigned int size(10);
   LinearAlgebra::Vector<double> vec(size);
   for (unsigned int i=0; i<size; ++i)