[PATCH] elf: Don't use corrupt string table

[H.J. Lu]

Return NULL for corrupt string table to avoid linker crash later.

	PR ld/33451
	* elf.c (bfd_elf_get_str_section): Return NULL for corrupt string
	table.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
---
 bfd/elf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bfd/elf.c b/bfd/elf.c
index 6ef60301091..f72b9da6570 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -363,7 +363,8 @@ bfd_elf_get_str_section (bfd *abfd, unsigned int shindex)
 	  _bfd_error_handler
 	    /* xgettext:c-format */
 	    (_("%pB: string table [%u] is corrupt"), abfd, shindex);
-	  shstrtab[shstrtabsize - 1] = 0;
+	  /* Don't use corrupt string table: PR ld/33451.  */
+	  return NULL;
 	}
       i_shdrp[shindex]->contents = shstrtab;
     }
-- 
2.51.0