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Don't merge sections with differing MASKPROC or MASKOS flags 

Not just SHF_EXCLUDE but any of these flags ought to prevent merging
of sections for ld -r.

	* ldelf.c (elf_orphan_compatible): Return false when two sections
	have differing SHF_MASKPROC or SHF_MASKOS flags.
This commit is contained in:
Alan Modra 2020-03-11 10:04:53 +10:30
parent 1c33af7764
commit 1db6f99030
2 changed files with 9 additions and 4 deletions
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5
ld/ChangeLog
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@ -1,3 +1,8 @@
2020-03-11 Alan Modra <amodra@gmail.com>
* ldelf.c (elf_orphan_compatible): Return false when two sections
have differing SHF_MASKPROC or SHF_MASKOS flags.
2020-03-05 Alan Modra <amodra@gmail.com>
PR 25570

8
ld/ldelf.c
View File

@ -1865,13 +1865,13 @@ elf_orphan_compatible (asection *in, asection *out)
if (elf_section_data (out)->this_hdr.sh_info
!= elf_section_data (in)->this_hdr.sh_info)
return FALSE;
/* We can't merge with member of output section group nor merge two
sections with differing SHF_EXCLUDE when doing a relocatable link.
*/
/* We can't merge with a member of an output section group or merge
two sections with differing SHF_EXCLUDE or other processor and OS
specific flags when doing a relocatable link. */
if (bfd_link_relocatable (&link_info)
&& (elf_next_in_group (out) != NULL
|| ((elf_section_flags (out) ^ elf_section_flags (in))
& SHF_EXCLUDE) != 0))
& (SHF_MASKPROC | SHF_MASKOS)) != 0))
return FALSE;
return _bfd_elf_match_sections_by_type (link_info.output_bfd, out,
in->owner, in);