Don't merge sections with differing MASKPROC or MASKOS flags
Alan Modra
amodra@gmail.com
Wed Mar 11 05:19:34 GMT 2020
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.
diff --git a/ld/ldelf.c b/ld/ldelf.c
index b055929d02..fa4bf9f727 100644
--- a/ld/ldelf.c
+++ b/ld/ldelf.c
@@ -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);
--
Alan Modra
Australia Development Lab, IBM
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