From 9d39abad4b3919b09c8d7215a65dc807747f70d3 Mon Sep 17 00:00:00 2001
From: Timo Heister <timo.heister@gmail.com>
Date: Thu, 7 Jul 2022 14:37:59 -0400
Subject: [PATCH] add error checks

---
 source/base/data_out_base.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/source/base/data_out_base.cc b/source/base/data_out_base.cc
index 1e4339bb02..bc0710b3df 100644
--- a/source/base/data_out_base.cc
+++ b/source/base/data_out_base.cc
@@ -9255,6 +9255,14 @@ DataOutReader<dim, spacedim>::read_whole_parallel_file(std::istream &in)
 
   ParallelIntermediateHeaderType header;
   in.read(reinterpret_cast<char *>(&header), sizeof(header));
+  AssertThrow(
+    header.magic == 0x00dea111,
+    ExcMessage(
+      "Invalid header of parallel deal.II intermediate format encountered."));
+  AssertThrow(
+    header.version == DataOutBase::Deal_II_IntermediateFlags::format_version,
+    ExcMessage(
+      "Incorrect header version of parallel deal.II intermediate format."));
 
   std::vector<std::uint64_t> chunk_sizes(header.num_ranks);
   in.read(reinterpret_cast<char *>(chunk_sizes.data()),
-- 
2.39.5