https://sourceware.org/bugzilla/show_bug.cgi?id=25351
Bug ID: 25351
Summary: .ARM.attributes not found
Product: binutils
Version: 2.34 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: guitton at adacore dot com
Target Milestone: ---
Hello,
This change may have been only partially implemented:
commit b8a6ced79668ec8af3180e50b76f7517ebbab0d9
Author: Alan Modra <amo...@gmail.com>
Date: Tue Jul 3 17:57:36 2018 +0930
Correct removal of .gnu.attributes
Setting SEC_EXCLUDE for empty .gnu.attributes is too late in the link
process for the linker to remove the section. That must be done in
bfd_elf_final_link, as we do for removed group sections.
* elflink.c (bfd_elf_final_link): Remove zero size .gnu.attributes
sections.
Since then, a link with -r and a simple link directive for ARM.attributes would
fail.
bash% aarch64-elf-gcc -c r.c
bash% aarch64-elf-ld -o r.out -r r.o -T l.ld
aarch64-elf-ld: r.out: could not find output section .ARM.attributes for input
section .ARM.attributes
aarch64-elf-ld: final link failed: nonrepresentable section on output
Am I missing something?
Here is the reproducer:
bash% cat l.ld
SECTIONS
{
.ARM.attributes : {
__ARM.attributes_start = .;
*(.ARM.attributes)
__ARM.attributes_end = .;
}
}
bash% cat r.c
/* { dg-lto-do link } */
/* { dg-lto-options {{-r -nostdlib}} } */
/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
int exported_var = 42;
/* { dg-final { scan-symbol "exported_var" } } */
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