Remove call to atol, which might read off the end of the buffer. (#870)

tests/bugfixes/github/test_issue_845.py

@@ -18,6 +18,6 @@ class LargeAllocationInPngChunk(metaclass=CaseMeta):
     stdout = [""]
     stderr = [
         """$exiv2_exception_message $filename:
-$kerCorruptedMetadata
+Failed to read image data
 """]
     retval = [1]

tests/bugfixes/github/test_issue_869.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+
+from system_tests import CaseMeta, path
+
+
+class OutOfBoundsReadInIptcParserDecode(metaclass=CaseMeta):
+    """
+    Regression test for the bug described in:
+    https://github.com/Exiv2/exiv2/issues/869
+    """
+    url = "https://github.com/Exiv2/exiv2/issues/869"
+
+    filename = path("$data_path/issue_869_poc.png")
+    commands = ["$exiv2 $filename"]
+    stdout = [""]
+    stderr = [
+        """Exiv2 exception in print action for file $filename:
+Failed to read image data
+"""
+]
+    retval = [1]