Allow zero-sized fields in extern structs (#16404)
This change allows the following types to appear in extern structs:
* Zero-bit integers
* void
* zero-sized structs and packed structs
* enums with zero-bit backing integers
* arrays of any length with zero-size elements
796927b900AdamGoertz committed on 7/29/2023, 4:45:01 PM· committed by GitHubparent8d1805f