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From: Eli Zaretskii <eliz@gnu.org>
To: Alexander Shukaev <haroogan@gmail.com>
Cc: 18995@debbugs.gnu.org
Subject: bug#18995: Error: Could not reserve dynamic heap area.
Date: Sat, 08 Nov 2014 21:50:13 +0200	[thread overview]
Message-ID: <83vbmppj4a.fsf@gnu.org> (raw)
In-Reply-To: <CAKu-7WxtrF-HxYzJpw4vDvLp5D249JcqZ8pqq8BOWwrZnvuTLQ@mail.gmail.com>

> Date: Sat, 8 Nov 2014 20:16:19 +0100
> From: Alexander Shukaev <haroogan@gmail.com>
> Cc: 18995@debbugs.gnu.org
> 
>     So what, the optimized code goes only once through the loop, and then
>     bails out? If so, what is the value of 'size' when the loop ends?
>     
> 
> OK, so there was one more detail that I forgot to mention. It looks like I also
> had "-funroll-loops". After removing it, "-O3" works fine too (without
> "volatile"). I think this is still a toolchain bug because "-O3 -funroll-loops"
> combination works fine in the x64 build and what's more important --- it
> *should* work fine. Anyway, maybe it's a good idea to somehow prevent people
> from passing "-funroll-loops" by filtering it out from "CFLAGS" in "Makefile"
> for example?

Do you understand why -funroll-loops causes the code to fail to work?
Because I cannot.  Unless I'm missing something, this sounds like a
GCC bug.





  reply	other threads:[~2014-11-08 19:50 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-08 15:22 bug#18995: Error: Could not reserve dynamic heap area Alexander Shukaev
2014-11-08 17:29 ` Eli Zaretskii
2014-11-08 18:17   ` Alexander Shukaev
2014-11-08 18:30     ` Eli Zaretskii
2014-11-08 18:40       ` Alexander Shukaev
2014-11-08 18:57         ` Eli Zaretskii
2014-11-08 19:16           ` Alexander Shukaev
2014-11-08 19:50             ` Eli Zaretskii [this message]
2014-11-08 19:58               ` Alexander Shukaev
2014-11-08 20:05                 ` Eli Zaretskii
2014-11-08 20:49                   ` Daniel Colascione
2014-11-09 16:12                     ` Eli Zaretskii
2014-11-09 16:30                       ` Andreas Schwab
2014-11-09 16:47                         ` Eli Zaretskii
     [not found]                       ` <545F94E4.5060102@dancol.org>
2014-11-09 16:30                         ` Alexander Shukaev
     [not found]                         ` <837fz4pc4o.fsf@gnu.org>
2014-11-09 16:40                           ` Daniel Colascione
2014-11-09 16:35                       ` Andreas Schwab
2014-11-09 16:39                         ` Alexander Shukaev
2014-11-09 16:49                           ` Eli Zaretskii
2014-11-09 16:53                             ` Alexander Shukaev
2014-11-09 17:17                               ` Eli Zaretskii
2014-11-09 17:14                         ` Eli Zaretskii

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