[Bug c/94692] New: Zero-sized arrays shouldn't require a complete element type

[sasho648 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94692

            Bug ID: 94692
           Summary: Zero-sized arrays shouldn't require a complete element
                    type
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sasho648 at gmail dot com
  Target Milestone: ---

Because they don't reserve any storage.

union db { union dd dd[0]; unsigned char udb; signed char sdb; } *ptr;
union dd { union db db[0]; unsigned long udd; signed long sdd; } 

data = *(ptr+0x3B)->dd;