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From: "jkain at nvidia dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug backtrace/15032] GNU/Linux backtrace fails to use eh_frame
 information when built with --enable-64-bit-bfd
Date: Tue, 22 Jan 2013 20:11:00 -0000
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http://sourceware.org/bugzilla/show_bug.cgi?id=15032

--- Comment #7 from Joseph Kain <jkain at nvidia dot com> 2013-01-22 20:11:41 UTC ---
> > as I was in the process of adding missing .eh_frame data
> I believe the problem is in your added data.  How do you add it?

I just added by adding the -fasynchronous-unwind-tables to my gcc invocations.

Looking over the gcc source I see that for non-PIC builds gcc doesn't include
the 'R' augmentation at all.  However, ld adds it when linking my objects
together.  I'm using binutils 2.18 which includes a bfd that uses encoding 0x10
(DW_EH_PE_pcrel).  Newer binutil release's bfds use 0x1b (DW_EH_PE_pcrel |
DW_EH_PE_sdata4).  So, is it the case that gdb doesn't support binaries built
with binutils 2.18?

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