diff --git a/include/ChangeLog b/include/ChangeLog
index e2a420f28..6f6066e17 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,11 @@
+2012-06-08  Jakub Jelinek  <jakub@redhat.com>
+
+	* dwarf2.def (DW_FORM_GNU_ref_alt, DW_FORM_GNU_strp_alt): New
+	forms.
+	* dwarf2.h (enum dwarf_macro_record_type): Add
+	DW_MACRO_GNU_define_indirect_alt, DW_MACRO_GNU_undef_indirect_alt
+	and DW_MACRO_GNU_transparent_include_alt.
+
 2012-05-23  Doug Evans  <dje@google.com>
 
 	* leb128.h: #include stdint.h, inttypes.h.
diff --git a/include/dwarf2.def b/include/dwarf2.def
index 870aecdaa..e9a8bcac0 100644
--- a/include/dwarf2.def
+++ b/include/dwarf2.def
@@ -205,6 +205,10 @@ DW_FORM (DW_FORM_ref_sig8, 0x20)
 /* Extensions for Fission.  See http://gcc.gnu.org/wiki/DebugFission.  */
 DW_FORM (DW_FORM_GNU_addr_index, 0x1f01)
 DW_FORM (DW_FORM_GNU_str_index, 0x1f02)
+/* Extensions for DWZ multifile.
+   See http://www.dwarfstd.org/ShowIssue.php?issue=120604.1&type=open .  */
+DW_FORM (DW_FORM_GNU_ref_alt, 0x1f20)
+DW_FORM (DW_FORM_GNU_strp_alt, 0x1f21)
 DW_END_FORM
 
 DW_FIRST_AT (DW_AT_sibling, 0x01)
diff --git a/include/dwarf2.h b/include/dwarf2.h
index 0be7a99c8..2c1aeb6b9 100644
--- a/include/dwarf2.h
+++ b/include/dwarf2.h
@@ -333,6 +333,11 @@ enum dwarf_macro_record_type
     DW_MACRO_GNU_define_indirect = 5,
     DW_MACRO_GNU_undef_indirect = 6,
     DW_MACRO_GNU_transparent_include = 7,
+    /* Extensions for DWZ multifile.
+       See http://www.dwarfstd.org/ShowIssue.php?issue=120604.1&type=open .  */
+    DW_MACRO_GNU_define_indirect_alt = 8,
+    DW_MACRO_GNU_undef_indirect_alt = 9,
+    DW_MACRO_GNU_transparent_include_alt = 10,
     DW_MACRO_GNU_lo_user = 0xe0,
     DW_MACRO_GNU_hi_user = 0xff
   };