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anonymous unions/structs Do qualifiers have an effect?
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struct/union members with qualifiers during struct assignment
- there is no lvalue with qualifiers involved
- for const there is a rule in the def. of 'modifiable lvalue'
- volatile may be UB (has a volatile object modified using non-vol lv)
- _Atomic ??
- also: Unnamed members of structure objects have indeterminate value even after initialization.