Document that the definition file needs the archive headers - #376
Merged
gennaroprota merged 1 commit intoAug 13, 2026
Merged
Conversation
`BOOST_CLASS_EXPORT_IMPLEMENT` instantiates serialization code only for the archive classes whose headers its translation unit has seen, so a definition file which includes none of them instantiates nothing, and serializing a pointer to the class throws `unregistered_class` at run time. The rule was stated for `BOOST_CLASS_EXPORT`, but both passages which send the reader to the `_KEY` and `_IMPLEMENT` pair presented that split as the answer to the include ordering problem without saying that the definition file still has to follow it. Refs #327.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
BOOST_CLASS_EXPORT_IMPLEMENTinstantiates serialization code only for the archive classes whose headers its translation unit has seen, so a definition file which includes none of them instantiates nothing, and serializing a pointer to the class throwsunregistered_classat run time. The rule was stated forBOOST_CLASS_EXPORT, but both passages which send the reader to the_KEYand_IMPLEMENTpair presented that split as the answer to the include ordering problem without saying that the definition file still has to follow it.Refs #327.