The standard says there's not supposed to be a default writer policy for the sc_buffer template class, but in the Accellera implementation there is, and the regression tests depend on it to compile. Change-Id: I31d17617441224e86c56c54e45364be8f4f45b00 Reviewed-on: https://gem5-review.googlesource.com/10957 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>