[PATCH] D40752: [OpenMP] Fix assert fail after target implicit map checks

[Alexey Bataev via Phabricator via cfe-commits]

ABataev added a comment.

In https://reviews.llvm.org/D40752#945234, @jdenny wrote:

> r319774 works for my current use cases.  Thanks.
>
> While we're on this topic, do you happen to know the rationale behind the OpenMP restriction for which err_omp_union_type_not_allowed diagnoses violations?  I googled but couldn't find the rationale.  If you would prefer that I ask this in a different forum, would you please suggest one?  Thanks.


You cannot map the member of the union, but you can map the whole union. Mapping of separate members is not allowed because you will definitely have troubles with overlapping memory for union members.


https://reviews.llvm.org/D40752