1 files changed, 7 insertions, 3 deletions
diff --git a/extern/ceres/internal/ceres/dynamic_compressed_row_jacobian_writer.h b/extern/ceres/internal/ceres/dynamic_compressed_row_jacobian_writer.h
index ef8fa25d7d4..794a9b4c1e6 100644
--- a/extern/ceres/internal/ceres/dynamic_compressed_row_jacobian_writer.h
+++ b/extern/ceres/internal/ceres/dynamic_compressed_row_jacobian_writer.h
@@ -34,7 +34,10 @@
 #ifndef CERES_INTERNAL_DYNAMIC_COMPRESSED_ROW_JACOBIAN_WRITER_H_
 #define CERES_INTERNAL_DYNAMIC_COMPRESSED_ROW_JACOBIAN_WRITER_H_
 
+#include <memory>
+
 #include "ceres/evaluator.h"
+#include "ceres/internal/export.h"
 #include "ceres/scratch_evaluate_preparer.h"
 
 namespace ceres {
@@ -43,7 +46,7 @@ namespace internal {
 class Program;
 class SparseMatrix;
 
-class DynamicCompressedRowJacobianWriter {
+class CERES_NO_EXPORT DynamicCompressedRowJacobianWriter {
  public:
   DynamicCompressedRowJacobianWriter(Evaluator::Options /* ignored */,
                                      Program* program)
@@ -55,12 +58,13 @@ class DynamicCompressedRowJacobianWriter {
   // the cost functions. The scratch space is therefore used to store
   // the jacobians (including zeros) temporarily before only the non-zero
   // entries are copied over to the larger jacobian in `Write`.
-  ScratchEvaluatePreparer* CreateEvaluatePreparers(int num_threads);
+  std::unique_ptr<ScratchEvaluatePreparer[]> CreateEvaluatePreparers(
+      int num_threads);
 
   // Return a `DynamicCompressedRowSparseMatrix` which is filled by
   // `Write`. Note that `Finalize` must be called to make the
   // `CompressedRowSparseMatrix` interface valid.
-  SparseMatrix* CreateJacobian() const;
+  std::unique_ptr<SparseMatrix> CreateJacobian() const;
 
   // Write only the non-zero jacobian entries for a residual block
   // (specified by `residual_id`) into `base_jacobian`, starting at the row