0003147: DLL dependency issues

(0007937)
jambolo (reporter)
2020-10-05 23:58

As well as several hundred of this warning:

warning C4275: non dll-interface class 'type1' used as base for dll-interface class 'type2'

(0007938)
jambolo (reporter)
2020-10-06 00:01

And this warning:

warning C4910: 'boost::iostreams::stream<FileBuf,std::char_traits<char>,std::allocator<char>>': '__declspec(dllexport)' and 'extern' are incompatible on an explicit instantiation

(0007939)
jambolo (reporter)
2020-10-06 06:18
edited on: 2020-10-06 06:22

Regarding warning C4251: 'type1' needs to have dll-interface to be used by clients of class 'type2':

This is a problem for C++ standard library. Because much of it is template-based, any differences in configurations (e.g. Debug vs. Release) when building the DLLs can cause bugs and crashes.

Unless somebody has a better solution, the only solution I know of is to remove any C++ standard library features from the DLL interface.

(0008513)
Ivan (developer)
2023-04-11 09:34

Warning disabled, not relevant

Issue History
Date Modified	Username	Field	Change
2020-10-05 23:53	jambolo	New Issue
2020-10-05 23:58	jambolo	Note Added: 0007937
2020-10-06 00:01	jambolo	Note Added: 0007938
2020-10-06 06:18	jambolo	Note Added: 0007939
2020-10-06 06:22	jambolo	Note Edited: 0007939	View Revisions
2023-04-11 09:34	Ivan	Note Added: 0008513
2023-04-11 09:34	Ivan	Status	new => closed
2023-04-11 09:34	Ivan	Assigned To	=> Ivan
2023-04-11 09:34	Ivan	Resolution	open => fixed

Notes
(0007937) jambolo (reporter) 2020-10-05 23:58	As well as several hundred of this warning: warning C4275: non dll-interface class 'type1' used as base for dll-interface class 'type2'

(0007938) jambolo (reporter) 2020-10-06 00:01	And this warning: warning C4910: 'boost::iostreams::stream<FileBuf,std::char_traits<char>,std::allocator<char>>': '__declspec(dllexport)' and 'extern' are incompatible on an explicit instantiation

(0007939) jambolo (reporter) 2020-10-06 06:18 edited on: 2020-10-06 06:22	Regarding warning C4251: 'type1' needs to have dll-interface to be used by clients of class 'type2': This is a problem for C++ standard library. Because much of it is template-based, any differences in configurations (e.g. Debug vs. Release) when building the DLLs can cause bugs and crashes. Unless somebody has a better solution, the only solution I know of is to remove any C++ standard library features from the DLL interface.

(0008513) Ivan (developer) 2023-04-11 09:34	Warning disabled, not relevant

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