With heterogeneous lookup, `equal_range` can result in a range with length greater than 1.

boostorg / container

STL-like containers from Boost

http://www.boost.org/libs/container/

Boost Software License 1.0

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Closed JanEisenhauer closed 5 years ago

JanEisenhauer commented 5 years ago

Do we need tests?

igaztanaga commented 5 years ago

Can you please add a small test case that reproduces the reported error? Thanks

JanEisenhauer commented 5 years ago

Is it acceptable to have the struct with_lookup_by_first in both flat_set_test.cpp and flat_map_test.cpp?

igaztanaga commented 5 years ago

Many thanks, it seems that "count()" has the same problem. I'll apply a fix on top of your patch.