[binutils-gdb/binutils-2_42-branch] PR31208, strip can break ELF alignment requirements

[Alan Modra]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=78f9e9faaa41d628170f6047c3e032a67f9e829d

commit 78f9e9faaa41d628170f6047c3e032a67f9e829d
Author: Alan Modra <amodra@gmail.com>
Date:   Fri Feb 9 07:04:22 2024 +1030

    PR31208, strip can break ELF alignment requirements
    
    In https://sourceware.org/pipermail/binutils/2007-August/053261.html
    (git commit 3dea8fca8b86) I disabled a then new linker feature that
    removed empty PT_LOAD headers in cases where a user specified program
    headers, and for objcopy.  This can be a problem for objcopy/strip and
    since objcopy operates on sections, any part of a PT_LOAD loading file
    contents not covered by a section will be omitted anyway.
    
            PR 31208
            * elf.c (_bfd_elf_map_sections_to_segments): Pass remove_empty_load
            as true to elf_modify_segment_map for objcopy/strip.
    
    (cherry picked from commit 7f26d260ef76a4cb2873a7815bef187005528c19)

Diff:
---
 bfd/elf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bfd/elf.c b/bfd/elf.c
index 88c75ae3ce0..8bffd3c5141 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -5789,7 +5789,7 @@ _bfd_elf_map_sections_to_segments (bfd *abfd,
       elf_seg_map (abfd) = mfirst;
     }
 
-  if (!elf_modify_segment_map (abfd, info, no_user_phdrs))
+  if (!elf_modify_segment_map (abfd, info, no_user_phdrs || info == NULL))
     return false;
 
   for (count = 0, m = elf_seg_map (abfd); m != NULL; m = m->next)