From 6685b8db4a54b4ff41644ad944f26d2f332a06c3 Mon Sep 17 00:00:00 2001
From: Kevin Backhouse <kevinbackhouse@github.com>
Date: Thu, 24 Jun 2021 10:38:19 +0100
Subject: [PATCH] Print message to stderr when EXIV2_DEBUG_MESSAGES is enabled.

---
 src/crwimage_int.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/crwimage_int.cpp b/src/crwimage_int.cpp
index 3a0347a6..fd139271 100644
--- a/src/crwimage_int.cpp
+++ b/src/crwimage_int.cpp
@@ -1236,6 +1236,10 @@ namespace Exiv2 {
             if (s <= size) {
                 if (len < s) len = s;
                 exif.copy(buf.pData_ + exif.tag() * 2, byteOrder);
+            } else {
+#ifdef EXIV2_DEBUG_MESSAGES
+                std::cerr << "packIfdId out-of-bounds error: s = " << std::dec << s << "\n";
+#endif
             }
         }
         // Round the size to make it even.