[clang] [OpenMP] Don't emit redundant zero-sized mapping nodes for overlapped structs (PR #148947)

[Qinkun Bao via cfe-commits]

qinkunbao wrote:

> I'll have a look.

Thanks. If it is not going to be an easy and quick fix, would you mind reverting the PR first and reland this PR once the error is fixed?



https://github.com/llvm/llvm-project/pull/148947