From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail From: Paul Rubin Newsgroups: comp.lang.ada Subject: Re: How to get Ada to ?cross the chasm?? Date: Wed, 09 May 2018 15:05:49 -0700 Organization: A noiseless patient Spider Message-ID: <874ljgzdqa.fsf@nightsong.com> References: <1c73f159-eae4-4ae7-a348-03964b007197@googlegroups.com> <87k1su7nag.fsf@nightsong.com> <87po2la2qt.fsf@nightsong.com> <87in8buttb.fsf@jacob-sparre.dk> <87wowqpowu.fsf@nightsong.com> <16406268-83df-4564-8855-9bd0fe9caac0@googlegroups.com> <87o9i2pkcr.fsf@nightsong.com> <87in88m43h.fsf@nightsong.com> <87efiuope8.fsf@nightsong.com> <322f9b26-01de-4753-bb50-6ef2f3d993d8@googlegroups.com> <87a7th9pd1.fsf@nightsong.com> <87h8no1nli.fsf@nightsong.com> <78ca61a2-5d11-46f4-9ce7-7fce500ca1dd@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: reader02.eternal-september.org; posting-host="a15f8e13c869a4517dec92123a650d01"; logging-data="19486"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/H607PyHG6BRw5Y1jhxa1D" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) Cancel-Lock: sha1:VM3GUGhDOOpDYXsgt3peXv6pRN0= sha1:c3swrxrF7s17Eg2riFHmcFYgzvw= Xref: reader02.eternal-september.org comp.lang.ada:52178 Date: 2018-05-09T15:05:49-07:00 List-Id: "Randy Brukardt" writes: >> "27 {AI05-0229-1} Implementations are permitted, but not required, to >> provide garbage collection." > Yes, it's permitted -- but nothing says that it can be useful. :-) Certainly it's hugely limited if the system is prevented from moving objects around in memory during GC. I don't see anything in the Ada Distilled description of access types that would prevent that, so I'll have to read your other post more carefully.