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Re: [microblaze-uclinux] ld segfault



Hi Rod,

Rod Green wrote:
All,

I am getting a segfault when I try to link an application.

That's odd - someone else reported one of those recently as well.

Does anyone
have any pointers on how to pursue this?  I'm pretty much out of ideas.
The program is c++ that was developed under Linux and Win32, and it
links against a few other libraries that were developed similarly.  I
can link other code against those libs without any trouble, but so far I
haven't been able to come up with a minimal test case that triggers the
segfault.  Below is the specific error I'm getting:

Are all of the libs and object code you are linking, compiled on the same (Linux) host platform?

/home/rgreen/petalinux-v0.20-rc3/tools/linux-i386/microblaze-uclinux-too
ls/bin/../lib/gcc/microblaze-uclinux/3.4.1/../../../../microblaze-uclinu
x/bin/ld.real: bfd assertion fail

This BDF message is curious - I've never seen it before.


/home/jwilliams/PetaLogix/petalinux-test/toolchains/microblaze-uclinux/s
rcs/binutils/bfd/elflink.h:5205
/home/rgreen/petalinux-v0.20-rc3/tools/linux-i386/microblaze-uclinux-too
ls/bin/../lib/gcc/microblaze-uclinux/3.4.1/../../../../microblaze-uclinu
x/bin/ld: line 168: 27073 Segmentation fault      $LINKER $EMUL -r -d -o
"$OFILE.elf2flt" $ARG1
collect2: ld returned 139 exit statusthe -f parameter to follow forks

I am using the tools from petalinux-v0.20-rc3.tar.gz.  Any help would be
appreciated.

Can you cut and paste the complete command line that causes the segfault? If so, enter it on the commandline, make sure it triggers the error, then maybe try running strace on it:

 $ strace commandline

you might need the -f parameter to straec, to follow forked children.

Of course a test case would be helpful but I understand this might be hard with proprietary code. Even the process of trying to strip down the offending app / library can be informative - if the error suddenly goes away, what changed?

Regards,

John
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