Merge pull request #2192 from Exiv2/027_issue2190

[0.27] Detect integer-overflow and throw in that case
Exiv2 · Apr 4, 2022 · 3409ddd · 3409ddd
2 parents 51c39d5 + f548681
commit 3409ddd
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diff --git a/src/exif.cpp b/src/exif.cpp
@@ -35,6 +35,7 @@
 #include "types.hpp"
 #include "error.hpp"
 #include "basicio.hpp"
+#include "safe_op.hpp"
 #include "tiffimage.hpp"
 #include "tiffimage_int.hpp"
 #include "tiffcomposite_int.hpp" // for Tag::root
@@ -964,7 +965,7 @@ namespace {
     {
         long sum = 0;
         for (long i = 0; i < md.count(); ++i) {
-            sum += md.toLong(i);
+            sum = Safe::add(sum, md.toLong(i));
         }
         return sum;
     }

diff --git a/test/data/issue_2190_poc.jp2 b/test/data/issue_2190_poc.jp2