[PATCH, ARM/ld]Linker should return with error if failed to merge arch attribute

[Matthew Fortune]

Terry Guo <flameroc@gmail.com> writes:
> terguo01@terry-pc01:case$ arm-none-eabi-readelf -A test.elf
> Attribute Section: aeabi
> File Attributes
> Segmentation fault (core dumped)

Isn't this a bug in readelf? I would have thought all the inspection
tools (objdump/readelf) should be able to report about inconsistent
information rather than crash?

Matthew