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Stop the BFD library from issuing a warning message when processing allocated sections in debuginfo files that lie outside of any loadable segment.

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PR 24717
	* elf.c (is_debuginfo_file): New function.
	(assign_file_positions_for_non_load_sections): Do not warn about
	allocated sections outside of loadable segments if they are found
	in a debuginfo file.
	* elf-bfd.h (is_debuginfo_file): Prototype.
This commit is contained in:
Nick Clifton 2019-07-02 15:58:29 +01:00
parent 854f60884c
commit 1faa385ff6
3 changed files with 47 additions and 1 deletions
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9
bfd/ChangeLog
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@ -1,3 +1,12 @@
2019-07-02 Nick Clifton <nickc@redhat.com>
PR 24717
* elf.c (is_debuginfo_file): New function.
(assign_file_positions_for_non_load_sections): Do not warn about
allocated sections outside of loadable segments if they are found
in a debuginfo file.
* elf-bfd.h (is_debuginfo_file): Prototype.
2019-07-02 Nick Clifton <nickc@redhat.com>
PR 24753

2
bfd/elf-bfd.h
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@ -2751,6 +2751,8 @@ extern bfd_vma elf64_r_sym (bfd_vma);
extern bfd_vma elf32_r_info (bfd_vma, bfd_vma);
extern bfd_vma elf32_r_sym (bfd_vma);
extern bfd_boolean is_debuginfo_file (bfd *);
/* Large common section. */
extern asection _bfd_elf_large_com_section;

37
bfd/elf.c
View File

@ -5810,6 +5810,35 @@ assign_file_positions_for_load_sections (bfd *abfd,
return TRUE;
}
/* Determine if a bfd is a debuginfo file. Unfortunately there
is no defined method for detecting such files, so we have to
use heuristics instead. */
bfd_boolean
is_debuginfo_file (bfd *abfd)
{
if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_elf_flavour)
return FALSE;
Elf_Internal_Shdr **start_headers = elf_elfsections (abfd);
Elf_Internal_Shdr **end_headers = start_headers + elf_numsections (abfd);
Elf_Internal_Shdr **headerp;
for (headerp = start_headers; headerp < end_headers; headerp ++)
{
Elf_Internal_Shdr *header = * headerp;
/* Debuginfo files do not have any allocated SHT_PROGBITS sections.
The only allocated sections are SHT_NOBITS or SHT_NOTES. */
if ((header->sh_flags & SHF_ALLOC) == SHF_ALLOC
&& header->sh_type != SHT_NOBITS
&& header->sh_type != SHT_NOTE)
return FALSE;
}
return TRUE;
}
/* Assign file positions for the other sections. */
static bfd_boolean
@ -5843,7 +5872,13 @@ assign_file_positions_for_non_load_sections (bfd *abfd,
BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos);
else if ((hdr->sh_flags & SHF_ALLOC) != 0)
{
if (hdr->sh_size != 0)
if (hdr->sh_size != 0
/* PR 24717 - debuginfo files are known to be not strictly
compliant with the ELF standard. In particular they often
have .note.gnu.property sections that are outside of any
loadable segment. This is not a problem for such files,
so do not warn about them. */
&& ! is_debuginfo_file (abfd))
_bfd_error_handler
/* xgettext:c-format */
(_("%pB: warning: allocated section `%s' not in segment"),