Re: Duplicate FDEs in .eh_frame

[Alan Modra]

On Thu, Nov 13, 2014 at 08:21:02AM -0500, Rene Gollent wrote:
> Hi there,
> 
> I was wondering, is there a known/intended case where gcc + binutils
> will produce .eh_frame sections with duplicate FDEs? I'm seeing this
> with gcc 4.8.3 + binutils 2.24 on Haiku, and thought I'd see if this
> is intentional before I try to come up with a reduced testcase on
> another platform, as I don't believe all of our patches have been
> upstreamed at this point. The FDEs in question have the exact same
> lowpc/highpc, CIE and call frame instructions, the only discernable
> difference is that they're located in completely different parts of
> the section.

The cases I've seen involved C++ and ld -r.  Binutils git master and
binutils-2_25-branch should have the problem fixed.

See https://sourceware.org/bugzilla/show_bug.cgi?id=17467#c2

-- 
Alan Modra
Australia Development Lab, IBM