From: David Daney <ddaney.cavm@gmail.com>
To: Kurt Miller <kurt@intricatesoftware.com>
Cc: java@gcc.gnu.org
Subject: Re: gcj 4.6 on OpenBSD/x86
Date: Mon, 08 Oct 2012 20:35:00 -0000 [thread overview]
Message-ID: <50733907.9080108@gmail.com> (raw)
In-Reply-To: <201210081607.04804.kurt@intricatesoftware.com>
On 10/08/2012 01:07 PM, Kurt Miller wrote:
> Hi,
>
> Previously I ported gcj in gcc 4.2.4 to OpenBSD. I currently use it to build classpath-0.98 and bootstrap Oracle's 1.6 JVM using classpath and jamvm. I'm now working on gcj from gcc 4.6.3 on x86 and have run into an issue that I could use some help with.
>
> gjar is segfaulting while throwing a ClassCastException from frame 3. Here is some debugging output showing the state and some variables leading up to the segfault. I'm not sure where to go from here. I can't seem to find the root cause of this issue other than something is wrong with 'obj' in frame 3 and obj->getClass()->getName() fails. Any ideas on how to proceed with the debugging on this issue?
>
> Core was generated by `egjar'.
> Program terminated with signal 11, Segmentation fault.
> #0 0x0c392970 in _Jv_NewStringUTF (bytes=0xfc408b05 <Address 0xfc408b05 out of bounds>)
> at /usr/obj/i386/ports/gcc-4.6.3/gcc-4.6.3/libjava/java/lang/natString.cc:245
> 245 int size = strlen (bytes);
>
>
I haven't studied it closely, but it would appear that 'bytes=0xfc408b05
<Address 0xfc408b05 out of bounds>' indicates a real problem. If it is
truly a bad pointer value, you need to figure out where it came from and
fix it.
David Daney
next prev parent reply other threads:[~2012-10-08 20:35 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-08 20:08 Kurt Miller
2012-10-08 20:35 ` David Daney [this message]
2012-10-08 22:10 ` Kurt Miller
2012-10-09 0:51 ` Andrew Haley
2012-10-09 13:06 ` Kurt Miller
2012-10-09 17:22 ` Boehm, Hans
2012-10-09 18:27 ` Kurt Miller
2012-10-10 13:33 ` Kurt Miller
2012-10-14 11:26 ` Kurt Miller
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