http://sourceware.org/bugzilla/show_bug.cgi?id=12366
Summary: assertion failure with STT_GNU_IFUNC symbols on x86_64
Product: binutils
Version: 2.22 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
AssignedTo: [email protected]
ReportedBy: [email protected]
Created attachment 5181
--> http://sourceware.org/bugzilla/attachment.cgi?id=5181
Shell script to reproduce bug
The x86 and x86_64 IFUNC code assumes that check_relocs can rely on def_regular
being set for all regular definitions. That's not true, because def_regular is
set by the same pass that calls check_relocs, and doesn't therefore take into
account regular definitions in later objects. Everything works if the regular
definition comes before the regular use, but not the other way round.
I've attached a simple example. The link order in the example gives:
./ld/ld-new: BFD (GNU Binutils) 2.21.51.20110105 internal error, aborting at
/usr/export/richards-desktop-2/richards/binutils/HEAD/src/bfd/elf64-x86-64.c
line 2802 in elf_x86_64_relocate_section
./ld/ld-new: Please report this bug.
But linking bar.o before foo.o works as expected.
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