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gcc diagnostic bug ?

On 15/12/2017 03:20, Jonathan Wakely wrote:
FAIL: 23_containers/vector/cons/  (test for errors, line 35)
FAIL: 23_containers/vector/cons/  (test for errors, line 41)

I had a look at this remaining issue. The compilation result is:

In file included from /home/fdt/dev/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/stl_tempbuf.h:60,                  from /home/fdt/dev/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/stl_algo.h:62,                  from /home/fdt/dev/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/include/algorithm:62,                  from /home/fdt/dev/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/stdc++.h:65,
                 from <command-line>:0:
/home/fdt/dev/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/stl_construct.h: In instantiation of 'void std::_Destroy(_ForwardIterator, _ForwardIterator) [with _ForwardIterator = DeletedDtor*]': /home/fdt/dev/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/stl_construct.h:206: required from 'void std::_Destroy(_ForwardIterator, _ForwardIterator, std::allocator<_T2>&) [with _ForwardIterator = DeletedDtor*; _Tp = DeletedDtor]' /home/fdt/dev/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/stl_vector.h:612: required from 'std::__cxx1998::vector<_Tp, _Alloc>::~vector() [with _Tp = DeletedDtor; _Alloc = std::allocator<DeletedDtor>]' /home/fdt/dev/gcc/build/x86_64-pc-linux-gnu/libstdc++-v3/include/debug/vector:155: required from here

The code at debug/vector:155 is:

      vector() = default;

So no trace of a call to the ~std::__cxx1998::vector<> at that point.

I guess gcc tries to instantiate the destructor when generating the default vector constructor but IMO it shouldn't be visible in the compilation error message.

Should we report this as a gcc bug ?


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