[COMMITTED] dwarf.h: Add DW_AT_noreturn.

[COMMITTED] dwarf.h: Add DW_AT_noreturn.

[Mark Wielaard]

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DW_AT_noreturn is added by GCC5 for functions that don't return to their
caller. It is set on a DW_TAG_subprogram for the traditional GNU noreturn
attribute, the C11 _Noreturn keyword or C++11 [[noreturn]] attribute. It
is a new DWARF5 extension. This is a constant only addition to dwarf.h.
No other part of elfutils currently depends on this attribute.
Also added to https://fedorahosted.org/elfutils/wiki/DwarfExtensions

Signed-off-by: Mark Wielaard <mjw@redhat.com>
---
 libdw/ChangeLog | 4 ++++
 libdw/dwarf.h   | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index 58736a6..7e46e1a 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,3 +1,7 @@
+2014-11-26  Mark Wielaard  <mjw@redhat.com>
+
+	* dwarf.h (DW_AT_noreturn): Added.
+
 2014-11-11  Mark Wielaard  <mjw@redhat.com>
 
 	* dwarf_getsrclines.c (read_srclines): Do address_size comparison
diff --git a/libdw/dwarf.h b/libdw/dwarf.h
index d03cf5c..d47260e 100644
--- a/libdw/dwarf.h
+++ b/libdw/dwarf.h
@@ -221,6 +221,9 @@ enum
     DW_AT_enum_class = 0x6d,
     DW_AT_linkage_name = 0x6e,
 
+    /* DWARF5 attribute values.  */
+    DW_AT_noreturn = 0x87,
+
     DW_AT_lo_user = 0x2000,
 
     DW_AT_MIPS_fde = 0x2001,
-- 
1.8.3.1