mdbx-testing: добавление логирования С++ исключений в `extra/dupfix_multiple`.

test/extra/dupfix_multiple.c++

@@ -5,10 +5,7 @@
 #include <array>
 #include <iostream>
 
-int main(int argc, const char *argv[]) {
+int doit() {
-  (void)argc;
-  (void)argv;
-
   mdbx::path db_filename = "test-dupfix-multiple";
   mdbx::env_managed::remove(db_filename);
   mdbx::env_managed env(db_filename, mdbx::env_managed::create_parameters(),
@@ -285,3 +282,15 @@ int main(int argc, const char *argv[]) {
   std::cout << "OK\n";
   return EXIT_SUCCESS;
 }
+
+int main(int argc, const char *argv[]) {
+  (void)argc;
+  (void)argv;
+
+  try {
+    return doit();
+  } catch (const std::exception &ex) {
+    std::cerr << "Exception: " << ex.what() << "\n";
+    return EXIT_FAILURE;
+  }
+}