id summary reporter owner description type status milestone component version severity resolution keywords cc 9587 Boost Multi-index with two hashes unique with Boost Interprocess allocators does not compile tommy.payette@… Joaquín M López Muñoz "To reproduce: 0-Use the example libs/multi_index/example/ip_allocator.cpp. 1-Add #include 2-Change the book_container ordered_non_unique to hashed_unique. 3-Add to book struct a prize2 4-Add to book_container, a hashed_unique on prize2. Does not compile: error C2594: 'argument' : ambiguous conversions See attached document " Bugs closed To Be Determined multi_index Boost 1.54.0 Problem fixed