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Move _Guard into std::vector declaration and use it to guard all calls to vector _M_allocate. Doing so the compiler has more visibility on what is done with the pointers and do not raise anymore the -Wfree-nonheap-object warning. libstdc++-v3/ChangeLog: * include/bits/vector.tcc (_Guard): Move all the nested duplicated class... * include/bits/stl_vector.h (_Guard_alloc): ...here and rename. (_M_allocate_and_copy): Use latter. (_M_initialize_dispatch): Small code simplification. (_M_range_initialize): Likewise and set _M_finish first from the result of __uninitialize_fill_n_a that can throw.