Added reproducer for #201 to the test suite

tests/bugfixes/github/test_regression_issue_201.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+
+import system_tests
+
+
+class ShadowingError(system_tests.Case):
+
+    commands = ["{exiv2} -PE {data_path}/IMGP0020.exv"]
+    stdout = [""]
+    stderr = [""]
+    retval = [0]
+
+    def compare_stdout(self, i, command, got_stdout, expected_stdout):
+        """
+        We only really care about the LensInfo line and that exiv2 does not
+        crash, which the return value check also ensures.
+        """
+        self.assertIn(
+            "Exif.PentaxDng.LensInfo                      Undefined  69  131 0 0 255 0 40 148 111 65 69 6 238 65 78 153 80 40 1 73 107 251 255 255 255 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0",
+            got_stdout
+        )