Hi Dan,
I suspect that it is the "errno" storage change in libc.
The code of the part starts to break is like
ret = ::readlink( path, pBuf, pStoreEnd - pBuf );
if ( ret == -1 )
{
if ( errno != EINVAL )
{
//fprintf( stderr, "readlink() errno: %d, != %d\n",
errno, EINVAL );
break;
}
}
else
{
...
}
The truss output shows that readlink("/opt" ...) returns -1 with error
EINVAL.
However the test of "if ( errno != EINVAL )" returns true. I guess that
the location of errno storage has been changed in the libc, so the
application reference errno at a wrong address and get a wrong value.
I tried to debug this issue by dumping debug message to STDERR with
fprintf(), got something similar to the write() function call in the
truss output posted on our forum:
6871: write(2, "\0\0\0\0\0\0\0\0\0\0\0\0".., 18445580) Err#14 EFAULT
So, I guess, the ABI for fprintf in libc has been changed as well.
Best Regards,
George
Dan Mick wrote:
> Hi, George, and welcome. Your problem certainly is an interesting one.
>
> Have you identified the difference in the Solaris ABI that makes the
> application fail? The previous information wasn't clear about what
> had been identified as a change, if anything.
>
> George Wang wrote:
>> Hi,
>> I am George from LiteSpeed Technologies.
>> I'd like to assist to have this issue addressed.
>> Our lshttpd 32bit x86 binary is built with gcc 2.95.x cross compiler
>> hosted on a Linux box. The system headers and libraries are extracted
>> from an Solaris 8 x86 box. The lshttpd binary works well on Solaris
>> 10 official releases and earlier Nevada releases, breaks on recent
>> Nevada release.
>> If someone is interested in looking further into the problem, I can
>> create a test application that reproduce this problem and send the
>> executable along with the source code to him.
>>
>>
>> This message posted from opensolaris.org
>> _______________________________________________
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>> http://mail.opensolaris.org/mailman/listinfo/opensolaris-code
>
>
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