<rdar://problem/11291668>

Fixed an issue that would happen when using debug map with DWARF in the .o files where we wouldn't ever track down the actual definition for a type when things were in namespaces. We now serialize the decl context information into an intermediate format which allows us to track down the correct definition for a type regardless of which DWARF symbol file it comes from. We do this by creating a "DWARFDeclContext" object that contains the DW_TAG + name for each item in a decl context which we can then use to veto potential accelerator table matches. For example, the accelerator tables store the basename of the type, so if you have "std::vector<int>", we would end up with an accelerator table entry for the type that contained "vector<int>", which we would then search for using a DWARFDeclContext object that contained:

  [0] DW_TAG_class_type "vector<int>"
  [1] DW_TAG_namespace "std"

This is currently used to track down forward declarations for things like "class a::b::Foo;". 

llvm-svn: 155488

1 files changed, 1 insertions, 0 deletions

diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
index caa55857765..b9010cdefaa 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
@@ -46,6 +46,7 @@ public:
 
     void AddCompileUnit(DWARFCompileUnitSP& cu);
     uint32_t GetNumCompileUnits();
+    bool ContainsCompileUnit (const DWARFCompileUnit *cu) const;
     DWARFCompileUnit* GetCompileUnitAtIndex(uint32_t idx);
     DWARFCompileUnitSP GetCompileUnit(dw_offset_t cu_offset, uint32_t* idx_ptr = NULL);
     DWARFCompileUnitSP GetCompileUnitContainingDIE(dw_offset_t die_offset);