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From: Jonathan Wakely <jwakely@redhat.com>
To: "François Dumont" <frs.dumont@gmail.com>
Cc: "libstdc++@gcc.gnu.org" <libstdc++@gcc.gnu.org>,
	gcc-patches <gcc-patches@gcc.gnu.org>
Subject: Re: Make tests less istreambuf_iterator implementation dependent
Date: Thu, 28 Sep 2017 21:56:00 -0000	[thread overview]
Message-ID: <20170928215632.GQ4582@redhat.com> (raw)
In-Reply-To: <bece8d50-7cb1-277c-8792-1e4135eeeaec@gmail.com>

On 28/09/17 21:59 +0200, François Dumont wrote:
>On 28/09/2017 14:12, Jonathan Wakely wrote:
>>On 27/09/17 22:16 +0200, François Dumont wrote:
>>>Hi
>>>
>>>    I just committed attached patch as trivial.
>>>
>>>    Those tests were highly istreambuf_iterator implementation, it 
>>>is the result of the call to money_get<>::get which is pointing 
>>>immediately beyond the last character recognized to quote Standard 
>>>words.
>>
>>But according to the standard's specification for istreambuf_iterator
>>it makes no difference, because both iterators point to the same
>>streambuf and share the state.
>>
>>
>Simply adding a:
>
>VERIFY( *ibeg2 == '0' );
>
>before calling money_get<>::get method would have broken the test.
>
>The current istreambuf_iterator implementation capture the current 
>streambuf state each time it is tested for eof or evaluated. This is 
>why I considered those tests as fragile.

Yes, and I think that's non-conforming.

As I said in the other thread, I'd really like to see references to
the standard used to justify any changes to our istreambuf_iterator.


  reply	other threads:[~2017-09-28 21:56 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-27 20:16 François Dumont
2017-09-28 12:12 ` Jonathan Wakely
2017-09-28 19:59   ` François Dumont
2017-09-28 21:56     ` Jonathan Wakely [this message]
2017-10-02  5:43       ` François Dumont
2017-10-03 14:20         ` Jonathan Wakely
2017-10-04 16:21           ` François Dumont
2017-10-04 23:23             ` Jonathan Wakely
2017-11-15 20:52             ` [PATCH 1/4] Revert "2017-10-04 Petr Ovtchenkov <ptr@void-ptr.info>" Petr Ovtchenkov
2017-11-15 20:52               ` [PATCH 2/4] libstdc++: istreambuf_iterator keep attached streambuf Petr Ovtchenkov
2017-11-15 20:52                 ` [PATCH 3/4] libstdc++: avoid character accumulation in istreambuf_iterator Petr Ovtchenkov
2017-11-15 20:52                   ` [PATCH 4/4] libstdc++: immutable _M_sbuf " Petr Ovtchenkov
2017-11-15 21:31                   ` [PATCH 3/4] libstdc++: avoid character accumulation " Paolo Carlini
2017-11-16  5:32                     ` Petr Ovtchenkov
2017-11-16  9:39                       ` Paolo Carlini
2017-11-16 11:03                         ` Petr Ovtchenkov
2017-11-16 11:29                           ` Paolo Carlini
2017-11-16 11:41                             ` Petr Ovtchenkov
2017-11-16 11:51                               ` Paolo Carlini
2017-11-16 10:56               ` [PATCH 1/4] Revert "2017-10-04 Petr Ovtchenkov <ptr@void-ptr.info>" Jonathan Wakely
2017-11-16 11:35                 ` Petr Ovtchenkov
2017-11-16 11:39                   ` Jonathan Wakely
2017-11-16 11:40                     ` Jonathan Wakely
2017-11-16 11:57                     ` Petr Ovtchenkov
  -- strict thread matches above, loose matches on Subject: below --
2017-10-13 17:14 Make istreambuf_iterator::_M_sbuf immutable and add debug checks François Dumont
2017-10-23 19:08 ` François Dumont
2017-11-06 21:19   ` François Dumont
2017-11-16  5:52     ` Petr Ovtchenkov
2017-11-16 10:57       ` Jonathan Wakely
2017-11-16 11:46         ` Jonathan Wakely
2017-11-16 12:08           ` Petr Ovtchenkov
2017-11-16 17:40           ` François Dumont
2017-11-16 18:12             ` Petr Ovtchenkov
2017-11-16 21:31               ` François Dumont
2017-09-23  7:10 [PATCH] libstdc++: istreambuf_iterator keep attached streambuf Petr Ovtchenkov
2017-09-25 13:46 ` Jonathan Wakely
2017-09-28 10:34 ` Jonathan Wakely
2017-09-28 12:06   ` Petr Ovtchenkov
2017-09-28 12:38     ` Jonathan Wakely
2017-10-03 20:39       ` Petr Ovtchenkov
2017-10-04  5:04         ` [PATCH v2] " Petr Ovtchenkov
2017-10-06 16:01         ` [PATCH] libstdc++: istreambuf_iterator proxy (was: keep attached streambuf) François Dumont
2017-10-06 18:00           ` Petr Ovtchenkov
2017-10-08 14:59             ` [PATCH] libstdc++: istreambuf_iterator proxy François Dumont
2017-10-09 19:32               ` Petr Ovtchenkov
2017-10-10  5:52               ` Petr Ovtchenkov
2017-10-10 14:21           ` [PATCH] libstdc++: istreambuf_iterator proxy (was: keep attached streambuf) Jonathan Wakely
2017-08-24 11:27 [PATCH] streambuf_iterator: avoid debug-dependent behaviour Petr Ovtchenkov
2017-08-29 20:02 ` François Dumont
2017-08-30  5:05   ` Petr Ovtchenkov
2017-08-31 20:30     ` François Dumont
2017-09-01  9:10 ` Jonathan Wakely
2017-09-07 21:02   ` François Dumont
2017-09-08  5:47     ` Petr Ovtchenkov
2017-09-08  6:15       ` François Dumont
2017-09-09 20:17       ` François Dumont
2017-09-21  5:46         ` François Dumont
2017-09-28 10:50           ` Jonathan Wakely
2017-09-28 10:58             ` Jonathan Wakely
2017-09-21 18:23   ` Petr Ovtchenkov
2017-09-25  9:34     ` Petr Ovtchenkov

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