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result<int, E> with error code compatible custom E does not TRY into a result<int, std::error_code> function #210

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ned14 opened this issue Oct 10, 2019 · 1 comment
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result<int, E> with error code compatible custom E does not TRY into a result<int, std::error_code> function #210

ned14 opened this issue Oct 10, 2019 · 1 comment
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@ned14 ned14 commented Oct 10, 2019

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@ned14 ned14 added the bug label Oct 10, 2019
@ned14 ned14 changed the title Try isn't working when calling a `result<int>` function from a `result<unique_ptr<T>>` function result<T, E> with error code compatible custom E does not TRY into a result<unique_ptr, std::error_code> function Oct 10, 2019
@ned14 ned14 changed the title result<T, E> with error code compatible custom E does not TRY into a result<unique_ptr, std::error_code> function result<int, E> with error code compatible custom E does not TRY into a result<int, std::error_code> function Oct 10, 2019
ned14 added a commit that referenced this issue Oct 10, 2019
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#210 `make_error_code()` and `make_exception_ptr()` are now additiona…
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086ef6d 
…lly considered for

compatible copy and move conversions for `basic_result<>`. This lets you construct
a `basic_result<T, E>` into a `basic_result<T, error_code>`, where `E` is a
custom type which has implemented the ADL discovered free function
`error_code make_error_code(E)`, but is otherwise unrelated to `error_code`.
The same availability applies for `exception_ptr` with `make_exception_ptr()` being
the ADL discovered free function. `basic_outcome<>` has less support for this than
`basic_result<>` in order to keep constructor count down, but it will accept via
this mechanism conversions from `basic_result<>` and `failure_type<>`.
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@ned14 ned14 commented Nov 15, 2019

Fixed.
@ned14 ned14 closed this Nov 15, 2019
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