struct __attribute__((scalar_storage_order("little-endian"))) R1 { int I; int A[3]; }; struct __attribute__((scalar_storage_order("big-endian"))) R2 { int I; int A[3]; }; struct R1 My_R1 = { 0x12345678, { 0xAB0012, 0xCD0034, 0xEF0056 } }; struct R2 My_R2 = { 0x12345678, { 0xAB0012, 0xCD0034, 0xEF0056 } };