[Bug gold/19567] Symbol_value::value doesn't support x32 overflow check

[ccoutant at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19567

--- Comment #4 from Cary Coutant <ccoutant at gmail dot com> ---
> I can't tell 0xffffffff returned from Symbol_value::value is -1 or
> 4294967295.  Both are possible for x32 since hardware address is 64-bit.

But they're the same bit pattern. Whether it's -1 or 4294967295 is just a
matter of human interpretation. Why do you need to know the difference?

> For x32, I need Symbol_value::value to return 64-bit value even though
> x32 is ELF32.

Why? x32 uses ELFCLASS32, so you can't have a symbol value that doesn't fit in
32 bits. 

Please give me an example.

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