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https://issues.apache.org/jira/browse/XERCESC-2119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Scott Cantor resolved XERCESC-2119.
-----------------------------------
    Resolution: Fixed

> warning C4251: 'xercesc_3_2::TranscodeToStr::fString': class 
> 'xercesc_3_2::ArrayJanitor<XMLByte>' needs to have dll-interface to be used 
> by clients of class 'xercesc_3_2::TranscodeToStr'
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: XERCESC-2119
>                 URL: https://issues.apache.org/jira/browse/XERCESC-2119
>             Project: Xerces-C++
>          Issue Type: Bug
>          Components: Utilities
>    Affects Versions: 3.2.0
>         Environment: windows
>            Reporter: Mathieu Champlon
>            Assignee: Roger Leigh
>            Priority: Major
>             Fix For: 3.2.2, 3.2.1
>
>         Attachments: 0001-Explicitly-export-ArrayJanitor-templates.patch, 
> dll_interface.patch
>
>
> Upgrading from xerces 3.1.2 to 3.2.0 on windows introduces a few of
> {noformat}
> (...)\include\xercesc/util/TransService.hpp(559): error C2220: warning 
> treated as error - no 'object' file generated
> (...)\include\xercesc/util/TransService.hpp(559): warning C4251: 
> 'xercesc_3_2::TranscodeToStr::fString': class 
> 'xercesc_3_2::ArrayJanitor<XMLByte>' needs to have dll-interface to be used 
> by clients of class 'xercesc_3_2::TranscodeToStr'
> (...)\include\xercesc/util/TransService.hpp(559): note: see declaration of 
> 'xercesc_3_2::ArrayJanitor<XMLByte>'
> (...)\include\xercesc/util/TransService.hpp(641): warning C4251: 
> 'xercesc_3_2::TranscodeFromStr::fString': class 
> 'xercesc_3_2::ArrayJanitor<XMLCh>' needs to have dll-interface to be used by 
> clients of class 'xercesc_3_2::TranscodeFromStr'
> (...)\include\xercesc/util/TransService.hpp(641): note: see declaration of 
> 'xercesc_3_2::ArrayJanitor<XMLCh>'
> {noformat}
> As pragma deactivating C4251 is frown upon on the project I work, I ended up 
> exporting the types, see attached patch.
> Note that this was also mentioned in XERCESC-1974.



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