[Bug gold/16788] Gold produces unbootable Linux kernel

[ccoutant at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16788

--- Comment #9 from Cary Coutant <ccoutant at google dot com> ---
> > Yes, in gold, the fill value is always 4 bytes in length. There's a FIXME in
> > the code to support arbitrary lengths, but that seems unlikely to be the
> > problem here.
> 
> Fixing it for one and two bytes would be trivial :)

How does GNU ld determine the size? In gold, we treat the fill value as an
arbitrary expression, so by the time we get the actual value to use, we have no
idea how large the given value was. If it's based on the size of the constant
given (e.g., 0x9090 is two bytes and 0x00009090 is four bytes), it's not
trivial. If it's simply based on the magnitude (e.g., 0x9090 and 0x00009090 are
both two bytes), then yes, it probably is trivial -- but then how would you
express a fill pattern like 0x00009090 where you really want 00 00 90 90 00 00
90 90 ...?

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