* Bug in dynamic linker ld 2.37.20211103-150100.7.29
@ 2022-06-10 19:38 H.J. Lu
0 siblings, 0 replies; only message in thread
From: H.J. Lu @ 2022-06-10 19:38 UTC (permalink / raw)
To: pierre.lauber, Jan Beulich, Binutils
commit 17c6c3b99156fe82c1e637e1a5fd9f163ac788c8
Author: Jan Beulich <jbeulich@suse.com>
Date: Fri May 7 12:05:12 2021 +0200
x86-64/ELF: clear src_mask for all reloc types
x86-64 uses rela relocations. The comment next to the field's declaration
says "Non-zero values for ELF USE_RELA targets should be viewed with
suspicion ..." And indeed the fields being non-zero causes section
contents to be accumulated into the final relocated values in addition to
the relocations' addends, which is contrary to the ELF spec.
But for_main.o from
https://lists.gnu.org/archive/html/bug-binutils/2022-06/msg00064.html
has
28: e8 fc ff ff ff call 29 <main+0x29> 29: R_X86_64_PLT32
for_rtl_init_
2d: e8 fc ff ff ff call 2e <main+0x2e> 2e: R_X86_64_PLT32 MAIN__
32: e8 fc ff ff ff call 33 <main+0x33> 33: R_X86_64_PLT32
for_rtl_finish_
This is clearly wrong since addend is 0. This is a bug in the
compiler which was
used to generate it. If you have to use the buggy compiler, you need to use
binutils 2.36 or older.
--
H.J.
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-06-10 19:39 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-06-10 19:38 Bug in dynamic linker ld 2.37.20211103-150100.7.29 H.J. Lu
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).