| Summary: | wrongly calling _init1<T>() | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Eigen | Reporter: | cDc <cdc.seacave> | ||||
| Component: | Core - expression templates | Assignee: | Nobody <eigen.nobody> | ||||
| Status: | RESOLVED FIXED | ||||||
| Severity: | Compilation Problem | CC: | chtz, gael.guennebaud, jacob.benoit.1 | ||||
| Priority: | Normal | ||||||
| Version: | 3.3 (current stable) | ||||||
| Hardware: | All | ||||||
| OS: | All | ||||||
| Whiteboard: | |||||||
| Bug Depends on: | |||||||
| Bug Blocks: | 558 | ||||||
| Attachments: |
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You can workaround with Eigen::Matrix<TYPE,3,1> eX = X; and the fix for the devel branch is there: https://bitbucket.org/eigen/eigen/commits/e6ef61a3bd12/ Summary: Bug 1393: enable Matrix/Array explicit ctor from types with conversion operators (was ok with 3.2) I'll wait a bit before backporting. Thank you for the fast fix! I can confirm that this error is solved now (at least in my library). I see it is quite e big fix, so I understand your precaution. Now however I get a ton of warnings as no param is used for the macro you just added: ``` warning C4003: not enough actual parameters for macro 'EIGEN_INTERNAL_DENSE_STORAGE_CTOR_PLUGIN' ``` Could you please use __VA_ARGS__ instead of X in order to fix this warning? I get other errors now from upgrading from 3.2.11 to 3.3 (default), but I guess I should open a different bug report. Thanks! Regarding the warnings, I prefer tot to rely on variadic macros. BLA_BLA({}) does the job.
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Created attachment 776 [details] code to reproduce the error Not able to use a custom structure, that exposes an operator to access it as an Eigen matrix, as a Eigen type. Please see the simple example attached. The compilation failes with VC2015 with the following message: ``` 1>d:\pro\lib\eigen\eigen\src\core\matrix.h(296): error C2664: 'void Eigen::PlainObjectBase<Eigen::Matrix<double,3,1,0,3,1>>::_init1<T>(const double *)': cannot convert argument 1 from 'const TPoint3<TYPE>' to 'Eigen::EigenBase<Derived>::Index' 1> with 1> [ 1> T=TPoint3<TYPE> 1> ] 1> and 1> [ 1> Derived=Eigen::Matrix<double,3,1,0,3,1> 1> ] 1> d:\pro\lib\eigen\eigen\src\core\matrix.h(296): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called 1> d:\pro\src\consoleapplication1\consoleapplication1.cpp(22): note: see reference to function template instantiation 'Eigen::Matrix<double,3,1,0,3,1>::Matrix<TPoint3<TYPE>>(const T &)' being compiled 1> with 1> [ 1> T=TPoint3<TYPE> 1> ] 1> d:\pro\src\consoleapplication1\consoleapplication1.cpp(22): note: see reference to function template instantiation 'Eigen::Matrix<double,3,1,0,3,1>::Matrix<TPoint3<TYPE>>(const T &)' being compiled 1> with 1> [ 1> T=TPoint3<TYPE> 1> ] ```