Fix address violation issues encountered when parsing corrupt binaries.

[deliverable/binutils-gdb.git] / bfd / mach-o.c

diff --git a/bfd/mach-o.c b/bfd/mach-o.c
index 1807391d51be22bd3ec836b1425e432b19efbb92..9fe6326a299bc86d4ff4e86824b90a78e60959a3 100644 (file)
--- a/bfd/mach-o.c
+++ b/bfd/mach-o.c
@@ -3749,6 +3749,9 @@ bfd_mach_o_read_symtab_strtab (bfd *abfd)
     }
   else
     {
+      /* See PR 21840 for a reproducer.  */
+      if ((sym->strsize + 1) == 0)
+       return FALSE;
       sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
       if (sym->strtab == NULL)
         return FALSE;