From c26d30a1726a68c148e3cfa82564deb5f208a398 Mon Sep 17 00:00:00 2001
From: kaiw <kaiw@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Date: Tue, 14 Feb 2012 19:48:57 +0000
Subject: [PATCH] MFC r221595:

For zero-sized sections, set the `d_buf` field of the `Elf_Data`
descriptor returned by `elf_rawdata()` to NULL.


git-svn-id: svn://svn.freebsd.org/base/stable/8@231703 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
---
 lib/libelf/elf_data.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/libelf/elf_data.c b/lib/libelf/elf_data.c
index 9241b09dc..99098011b 100644
--- a/lib/libelf/elf_data.c
+++ b/lib/libelf/elf_data.c
@@ -223,7 +223,8 @@ elf_rawdata(Elf_Scn *s, Elf_Data *d)
 	if ((d = _libelf_allocate_data(s)) == NULL)
 		return (NULL);
 
-	d->d_buf     = sh_type == SHT_NOBITS ? NULL : e->e_rawfile + sh_offset;
+	d->d_buf     = (sh_type == SHT_NOBITS || sh_size == 0) ? NULL :
+	    e->e_rawfile + sh_offset;
 	d->d_off     = 0;
 	d->d_align   = sh_align;
 	d->d_size    = sh_size;
-- 
2.45.0