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Re: PATCH: PR 18655


On Mon, May 09, 2005 at 01:25:29PM -0700, Mark Mitchell wrote:
> 
> This patch fixes a problem with the generation of debug information on
> PowerPC GNU/Linux.  I posted this patch on Friday, and Alan Modra and
> Dan Jacobowitz said it looked sensible.  Since then, I've done the
> usual GCC testing.  I tried to run the GDB testsuite, but the results
> weren't very good on the powerpc64-linux-gnu box I was using; probably
> the kernel or C library need updating.  However, the results were the
> same before and after the patch.  I've also made myself familiar
> enough with the code that now the patch seems nearly obvious to me.
> 
> So, I went ahead and checked it on the mainline.
> 
> If there are any problems, please let me know.

Assuming it bakes OK on the mainline, I would like this patch for 4.0. 
Eventually GDB will use DWARF-2 unwind information on PPC; the longer
GCC generates bad unwind information, the harder it will be to adapt
GDB.  So I have high motivation to see 4.0.1 fixed.

It's probably going to require a gruesome unwinding hack anyway.

-- 
Daniel Jacobowitz
CodeSourcery, LLC


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