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24-Apr-2012 |
Greg Clayton <gclayton@apple.com> |
<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;".
git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@155488 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/source/Plugins/SymbolFile/DWARF/DWARFDeclContext.h
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