[BFD][PR21703]Override the new defined symbol with the old normal symbol when --allow-multiple-definition is provided

[Alan Modra]

On Tue, Oct 24, 2017 at 08:04:43PM +1030, Alan Modra wrote:
> On Tue, Oct 17, 2017 at 02:54:12PM +0100, Renlin Li wrote:
> > bfd/ChangeLog:
> > 
> > 2017-10-17  Renlin Li  <renlin.li@arm.com>
> > 
> > 	* elflink.c (_bfd_elf_merge_symbol): Handle multiple definition case.
> > 
> > ld/ChangeLog:
> > 
> > 2017-10-17  Renlin Li  <renlin.li@arm.com>
> > 
> > 	* testsuite/ld-elf/elf.exp: Run new tests.
> > 	* testsuite/ld-elf/pr21703-1.s: New.
> > 	* testsuite/ld-elf/pr21703-2.s: New.
> > 	* testsuite/ld-elf/pr21703-3.s: New.
> > 	* testsuite/ld-elf/pr21703-4.s: New.
> > 	* testsuite/ld-elf/pr21703-r.sd: New.
> > 	* testsuite/ld-elf/pr21703-shared.sd: New.
> > 	* testsuite/ld-elf/pr21703.sd: New.
> > 	* testsuite/ld-elf/pr21703.ver: New.
> 
> OK.

It looks like you have some work to do on this testcase.  Please
investigate.  One obvious thing is not run the -shared test for ELF
targets without shared library support.  You also probably should
exclude targets that use _bfd_generic_link_add_symbols (those that
don't define elf_backend_relocate_section).

avr-elf  +FAIL: PR ld/21703 -r
avr-elf  +FAIL: PR ld/21703 shared
cr16-elf  +FAIL: PR ld/21703 -r
cr16-elf  +FAIL: PR ld/21703 shared
cris-elf  +FAIL: PR ld/21703 shared
crx-elf  +FAIL: PR ld/21703 -r
crx-elf  +FAIL: PR ld/21703 shared
d10v-elf  +FAIL: PR ld/21703 shared
d30v-elf  +FAIL: PR ld/21703
d30v-elf  +FAIL: PR ld/21703 -r
d30v-elf  +FAIL: PR ld/21703 shared
dlx-elf  +FAIL: PR ld/21703
dlx-elf  +FAIL: PR ld/21703 -r
dlx-elf  +FAIL: PR ld/21703 shared
epiphany-elf  +FAIL: PR ld/21703 shared
fr30-elf  +FAIL: PR ld/21703 shared
frv-elf  +FAIL: PR ld/21703 shared
ft32-elf  +FAIL: PR ld/21703 -r
ft32-elf  +FAIL: PR ld/21703 shared
h8300-elf  +FAIL: PR ld/21703 shared
hppa64-hp-hpux11.23  +FAIL: PR ld/21703 shared
hppa64-linux  +FAIL: PR ld/21703 shared
ip2k-elf  +FAIL: PR ld/21703 shared
iq2000-elf  +FAIL: PR ld/21703 shared
lm32-elf  +FAIL: PR ld/21703 shared
m32c-elf  +FAIL: PR ld/21703 shared
m32r-elf  +FAIL: PR ld/21703 shared
m68hc11-elf  +FAIL: PR ld/21703 shared
m68hc12-elf  +FAIL: PR ld/21703 shared
mcore-elf  +FAIL: PR ld/21703 shared
mep-elf  +FAIL: PR ld/21703 -r
mep-elf  +FAIL: PR ld/21703 shared
microblaze-elf  +FAIL: PR ld/21703 -r
microblaze-elf  +FAIL: PR ld/21703 shared
mipstx39-elf  +FAIL: PR ld/21703 shared
mn10200-elf  +FAIL: PR ld/21703 shared
moxie-elf  +FAIL: PR ld/21703 shared
ms1-elf  +FAIL: PR ld/21703 shared
msp430-elf  +FAIL: PR ld/21703 -r
msp430-elf  +FAIL: PR ld/21703 shared
mt-elf  +FAIL: PR ld/21703 shared
nds32le-elf  +FAIL: PR ld/21703 shared
or1k-elf  +FAIL: PR ld/21703 shared
pj-elf  +FAIL: PR ld/21703
pj-elf  +FAIL: PR ld/21703 -r
pj-elf  +FAIL: PR ld/21703 shared
pru-elf  +FAIL: PR ld/21703 -r
pru-elf  +FAIL: PR ld/21703 shared
rl78-elf  +FAIL: PR ld/21703 -r
rl78-elf  +FAIL: PR ld/21703 shared
rx-elf  +FAIL: PR ld/21703 shared
spu-elf  +FAIL: PR ld/21703 shared
tic6x-elf  +FAIL: PR ld/21703 shared
v850-elf  +FAIL: PR ld/21703 shared
visium-elf  +FAIL: PR ld/21703 shared
xgate-elf  +FAIL: PR ld/21703 shared
xstormy16-elf  +FAIL: PR ld/21703 shared

-- 
Alan Modra
Australia Development Lab, IBM