1 files changed, 7 insertions, 2 deletions
diff --git a/extern/ceres/internal/ceres/block_structure.h b/extern/ceres/internal/ceres/block_structure.h
index 6e7003addb6..b5218c0c2cc 100644
--- a/extern/ceres/internal/ceres/block_structure.h
+++ b/extern/ceres/internal/ceres/block_structure.h
@@ -38,14 +38,14 @@
 #ifndef CERES_INTERNAL_BLOCK_STRUCTURE_H_
 #define CERES_INTERNAL_BLOCK_STRUCTURE_H_
 
+#include <cstdint>
 #include <vector>
 #include "ceres/internal/port.h"
-#include "ceres/types.h"
 
 namespace ceres {
 namespace internal {
 
-typedef int32 BlockSize;
+typedef int32_t BlockSize;
 
 struct Block {
   Block() : size(-1), position(-1) {}
@@ -70,6 +70,11 @@ struct Cell {
 bool CellLessThan(const Cell& lhs, const Cell& rhs);
 
 struct CompressedList {
+  CompressedList() {}
+
+  // Construct a CompressedList with the cells containing num_cells
+  // entries.
+  CompressedList(int num_cells) : cells(num_cells) {}
   Block block;
   std::vector<Cell> cells;
 };