Re: [PATCH 0/6] PR binutils/22875: More unsupported relocation handling target backend fixes

["H.J. Lu" <hjl dot tools at gmail dot com>]

On Thu, Mar 29, 2018 at 10:31 AM, Maciej W. Rozycki <macro@mips.com> wrote:
> Hi,
>
>  In the course of adjusting the strip-13 test case for correct MIPS target
> coverage I have discovered further problems with unsupported relocation
> handling across a few target backends, including the MIPS backend itself.
> Here's a small patch series to address them.  No regressions across the
> usual targets.  See individual descriptions for details.
>
>  A pattern repeats across a few targets, where out-of-bounds accesses are
> made to the respective howto tables for unsupported relocations, making
> behaviour unpredictable and possibly leading to a crash.  I have only
> adjusted those which actually triggered in my testing with strip-13 test
> case adjustments to come.  There may be more.
>
>  Also the x86-64 backend seems to mishandle unsupported relocations that
> have the recently added (with commit 78984959cb38 ("x86-64: Add
> R_X86_64_converted_reloc_bit")) R_X86_64_converted_reloc_bit bit set.  I
> found a possible fix too complicated for me to afford the time required to
> sort it now, so I'm leaving it up to H.J. to address.  More details will
> follow with strip-13 test case updates.  NB `readelf -r' does not handle
> R_X86_64_converted_reloc_bit either and reports an unrecognized relocation
> instead.
>

R_X86_64_converted_reloc_bit is a bit internal to linker.  What problems did
you see?  How can I reproduce it?

-- 
H.J.