branch boyceg: ensuring that tag_buffer has at least one entry
branch boyceg: ensuring that tag_buffer has at least one entry

huahbo/IBAMR,huahbo/IBAMR,iamciera/IBAMR,yaojieuh/IBAMR,iamciera/IBAMR,iamciera/IBAMR,yaojieuh/IBAMR,huahbo/IBAMR,huahbo/IBAMR,yaojieuh/IBAMR,iamciera/IBAMR,huahbo/IBAMR,iamciera/IBAMR,yaojieuh/IBAMR,yaojieuh/IBAMR,huahbo/IBAMR,huahbo/IBAMR,yaojieuh/IBAMR,yaojieuh/IBAMR,iamciera/IBAMR,iamciera/IBAMR