Defined in 4 files as a macro:
- contrib/libstdc++/include/bits/gslice_array.h, line 181 (as a macro)
- contrib/libstdc++/include/bits/indirect_array.h, line 177 (as a macro)
- contrib/libstdc++/include/bits/mask_array.h, line 172 (as a macro)
- contrib/libstdc++/include/bits/slice_array.h, line 237 (as a macro)