Using the GNU Compiler Collection (GCC): BPF Type Attributes

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#### 6.35.4 BPF Type Attributes

BPF Compile Once - Run Everywhere (CO-RE) support. When attached to a `struct` or `union` type definition, indicates that CO-RE relocation information should be generated for any access to a variable of that type. The behavior is equivalent to the programmer manually wrapping every such access with `__builtin_preserve_access_index`.