Bug 135498 - ld asserts trying to link ppc64 klibc
ld asserts trying to link ppc64 klibc
Product: Fedora
Classification: Fedora
Component: binutils (Show other bugs)
powerpc Linux
medium Severity medium
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Assigned To: Jakub Jelinek
Depends On:
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Reported: 2004-10-12 23:22 EDT by H. Peter Anvin
Modified: 2007-11-30 17:10 EST (History)
2 users (show)

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Doc Type: Bug Fix
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Last Closed: 2004-10-20 08:35:42 EDT
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Description H. Peter Anvin 2004-10-12 23:22:46 EDT
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Description of problem:
While trying to link klibc-0.181:

ld -m elf64ppc  -o tests/environ.shared -e main interp.o tests/environ.o -R libc.so /usr/lib/gcc/ppc64-redhat-linux/3.4.2/64/libgcc.a
ld: BFD 20040927 assertion fail ../../bfd/elf64-ppc.c:4703
make[1]: *** [tests/environ.shared] Segmentation fault (core dumped)
make[1]: *** Deleting file `tests/environ.shared'

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Try to build klibc-0.181 for ppc64 on rawhide Fedora/ppc.

Additional info:
Comment 1 Jakub Jelinek 2004-10-13 10:14:17 EDT
What klibc is doing, if it ever worked, worked by pure luck.
ld certainly isn't prepared for linking against ET_EXEC objects
as if they were shared libraries.

I guess the best solution would be immediately error out when
trying to link against an executable.  The alternative would be
to audit hundreds of abfd->flags & DYNAMIC checks to see whether
EXEC_P bit should also be relevant or not.
Comment 2 H. Peter Anvin 2004-10-19 20:57:59 EDT
I presume you're talking about the -R libc.so bit.  What klibc does is
the documented behaviour of ld -R; it imports *only* a symbol table.

Anyway, that is not the problem at hand.  Alan Modra has confirmed it
is an "old ABI/new ABI" thing, and it also affects the kernel. 
Specifying -mcall-aixdesc to gcc makes it work by using the "old ABI".
Comment 3 Jakub Jelinek 2004-10-20 08:35:42 EDT
Oops, I have missed the -R there, sorry about that.
Alan Modra's patch is in binutils-

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