Set state = unusable before computing the LU factorization of LAPACKFullMatrix

diff --git a/source/lac/lapack_full_matrix.cc b/source/lac/lapack_full_matrix.cc
index ae80e56929aff4605bae6463af906657e3a9f0a6..ad272cc9aa966265444be84dd14dc126a72b7ab9 100644 (file)
--- a/source/lac/lapack_full_matrix.cc
+++ b/source/lac/lapack_full_matrix.cc
@@ -496,6 +496,8 @@ void
 LAPACKFullMatrix<number>::compute_lu_factorization()
 {
   Assert(state == matrix, ExcState(state));
+  state = LAPACKSupport::unusable;
+
   const int mm = this->n_rows();
   const int nn = this->n_cols();
   number *values = const_cast<number *> (&this->values[0]);