From: Roland McGrath <roland@redhat.com>
Date: Wed, 30 Sep 2009 23:17:37 +0000 (-0700)
Subject: Add C++ dwarf::debug_info_entry constructor for lookup by offset, CU accessor.
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=308f2d00aa894cf9dcba9f19726f2c8717cb67fa;p=thirdparty%2Felfutils.git

Add C++ dwarf::debug_info_entry constructor for lookup by offset, CU accessor.
---

diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index dbd97019e..1800a2950 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,5 +1,9 @@
 2009-09-30  Roland McGrath  <roland@redhat.com>
 
+	* c++/dwarf (dwarf::debug_info_entry): Make constructor from file and
+	offset public.
+	(dwarf::debug_info_entry::compile_unit): New method.
+
 	* c++/dwarf_comparator (dwarf_comparator::reference_match): Use the
 	subtracker/subcomparator for attributes too.
 
diff --git a/libdw/c++/dwarf b/libdw/c++/dwarf
index 3f7210e03..71e3185ba 100644
--- a/libdw/c++/dwarf
+++ b/libdw/c++/dwarf
@@ -437,13 +437,22 @@ namespace elfutils
 	memset (&_m_die, 0, sizeof _m_die);
       }
 
+    public:
+      debug_info_entry (const debug_info_entry &die) : _m_die (die._m_die) {}
+
       inline debug_info_entry (const dwarf &dw, ::Dwarf_Off off)
       {
 	dw.xif (::dwarf_offdie (dw._m_dw, off, &_m_die) == NULL);
       }
 
-    public:
-      debug_info_entry (const debug_info_entry &die) : _m_die (die._m_die) {}
+      /* Return the compile_unit entry containing this entry.
+	 Note this might be a DW_TAG_partial_unit.  */
+      inline debug_info_entry compile_unit () const
+      {
+	debug_info_entry result;
+	xif (::dwarf_diecu (thisdie (), &result._m_die, NULL, NULL) == NULL);
+	return result;
+      }
 
       // Containers, see class definitions below.
       class raw_children_type;