PR26506 UBSAN: elf32-xtensa.c:3203 null pointer memcpy

	PR 26506
	* elf32-xtensa.c (elf_xtensa_combine_prop_entries): Return early
	when section is empty.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 1cd7943abc39da92746c00d5491c8967b675f60f..765188d303c2380d7f8362352a1c35bddf4e4e53 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2020-08-26  Alan Modra  <amodra@gmail.com>
+
+       PR 26506
+       * elf32-xtensa.c (elf_xtensa_combine_prop_entries): Return early
+       when section is empty.
+
 2020-08-26  Alan Modra  <amodra@gmail.com>
 
        PR 26498

diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
index 65c6ceb37942b9d8849efc4ea460a34156415ad9..5184fbf1be7646638b157cf5dbe746a25851c113 100644 (file)
--- a/bfd/elf32-xtensa.c
+++ b/bfd/elf32-xtensa.c
@@ -3117,6 +3117,9 @@ elf_xtensa_combine_prop_entries (bfd *output_bfd,
   int n, m, num;
 
   section_size = sxtlit->size;
+  if (section_size == 0)
+    return 0;
+
   BFD_ASSERT (section_size % 8 == 0);
   num = section_size / 8;