[binutils-gdb/binutils-2_37-branch] PR28186, SEGV elf.c:7991:30 in _bfd_elf_fixup_group_sections

[Alan Modra]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d86cf1b0d5ac6c0d900ae2b2a07fce7c4414d0e6

commit d86cf1b0d5ac6c0d900ae2b2a07fce7c4414d0e6
Author: Alan Modra <amodra@gmail.com>
Date:   Sat Aug 7 14:10:38 2021 +0930

    PR28186, SEGV elf.c:7991:30 in _bfd_elf_fixup_group_sections
    
            PR 28186
            * elf.c (_bfd_elf_fixup_group_sections): Don't segfault on
            objcopy/strip with NULL output_section.
    
    (cherry picked from commit 182ad37589e3931390d0c43f1d52a9a6e0062a61)

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

diff --git a/bfd/elf.c b/bfd/elf.c
index de5abafabf0..9c3f34c415b 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -7984,7 +7984,7 @@ _bfd_elf_fixup_group_sections (bfd *ibfd, asection *discarded)
 		    isec->flags |= SEC_EXCLUDE;
 		  }
 	      }
-	    else
+	    else if (isec->output_section != NULL)
 	      {
 		/* Adjust the output section size when called from
 		   objcopy. */