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Message from discussion gij
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Mike Frysinger  
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 More options Sep 6 2012, 6:53 pm
From: Mike Frysinger <vap...@gmail.com>
Date: Thu, 6 Sep 2012 18:52:43 -0400
Local: Thurs, Sep 6 2012 6:52 pm
Subject: Re: gij
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On Thu, Sep 6, 2012 at 5:44 PM, H.J. Lu <hjl.to...@gmail.com> wrote:
> On Thu, Sep 6, 2012 at 2:37 PM, Mike Frysinger <vap...@gmail.com> wrote:
>> On Thu, Sep 6, 2012 at 4:27 PM, H.J. Lu <hjl.to...@gmail.com> wrote:
>>> On Thu, Sep 6, 2012 at 1:11 PM, Daniel Schepler <dschep...@gmail.com> wrote:
>>>> I just tried again on hjl/x32/gcc-4_7-branch (as of commit
>>>> 587aa2d017226c45fa428227bb48ed9d25acf976 checked out this morning) and it
>>>> seems like gcj still isn't really working well on x32.  For example, if I
>>>> unpack the ecj-3.5.1 source, cd to src/org.eclipse.jdt.core, and then
>>>> execute "gcj -C -I /usr/share/java/ant.jar `find . -name \*.java | sort`" it
>>>> gives:

>>>> ecj1: arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed.
>>>> gcj: internal compiler error: Aborted (program ecj1)
>>>> Please submit a full bug report,
>>>> with preprocessed source if appropriate.
>>>> See <http://gcc.gnu.org/bugs.html> for instructions.

>>>> after outputting a random number of .class files and warnings.
>>>> (Occasionally it even succeeds, and some other times there's no output
>>>> before this error.)

>>> Isn't an ecj1 bug?  Please file a GCC bug if you can find a stand-alone
>>> testcase.

>> i don't think so.  i think there's a pthreads bug here somewhere.  we
>> see the same error when using git (repacking with threads), pbzip2
>> (when using more than 1 thread), and squashfs (which uses threads).

>> i've been poking it off & on trying to reduce it, but you can find
>> more details here:
>> https://bugs.gentoo.org/show_bug.cgi?id=394175

> Please find a testcase and I will fix it.

here's a semi reduced testcase:
http://wh0rd.org/~vapier/pbzip2.tar.xz

unpack it and run the doit.sh script.  it should fail with the arena.c
error.  note that the local pbzip2 sources are heavily hacked by me to
remove code that is unrelated to the crash at hand (to try and to
produce a reduced testcase).  if you want to get back to the original
tree, just download pbzip2-1.1.8 and run it against the local man1/
tree in that tarball.
-mike


 
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