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Invalid R_X86_64_GOTPCREL -> R_X86_64_PC32 conversions with binutils 2.2


From: Steve Vormwald
Subject: Invalid R_X86_64_GOTPCREL -> R_X86_64_PC32 conversions with binutils 2.24/2.25?
Date: Tue, 23 Jun 2015 21:56:44 +0000

When updating from binutils 2.23 to 2.25, we have run into "truncated to fit: 
R_X86_64_PC32 against symbol" errors for symbols that only have 
R_X86_64_GOTPCREL relocations.  One of the object files that is being linked 
contains a handful of large arrays that end up being placed more than 2GB away 
from the text that references them, hence the use of R_X86_64_GOTPCREL 
relocations rather than "simpler" relocations with offset limitations.  It 
looks like the linker is automatically converting these back to a relocation 
with stricter distance limits due to mod 
80d873266deca488bd8059e32780e8ce3ef6191d (Convert mov to lea for loading local 
function address).  Are we misusing R_X86_64_GOTPCREL or is this an ld bug?

Steven Vormwald


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