apply_qualifier
apply_qualifier(&token->pos, &ctx->ctype, attr->ctype.modifiers);
apply_qualifier(&next->pos, &ctx->ctype, MOD_NORETURN);
apply_qualifier(&next->pos, &ctx->ctype, MOD_CONST);
apply_qualifier(&next->pos, &ctx->ctype, MOD_VOLATILE);
apply_qualifier(&next->pos, &ctx->ctype, MOD_RESTRICT);
apply_qualifier(&next->pos, &ctx->ctype, MOD_ATOMIC);
apply_qualifier(&pos, ctype, mod);