Made Target hold a map of languages to TypeSystems, and added some accessors.

Also added some target-level search functions so that persistent variables and
symbols can be searched for without hand-iterating across the map of
TypeSystems.

llvm-svn: 249027

1 files changed, 5 insertions, 1 deletions

diff --git a/lldb/source/Target/ABI.cpp b/lldb/source/Target/ABI.cpp
index 6bee1c44f22..b2334d6abb8 100644
--- a/lldb/source/Target/ABI.cpp
+++ b/lldb/source/Target/ABI.cpp
@@ -124,7 +124,11 @@ ABI::GetReturnValueObject (Thread &thread,
     
     if (persistent)
     {
-        PersistentExpressionState *persistent_expression_state = thread.CalculateTarget()->GetScratchTypeSystemForLanguage(ast_type.GetMinimumLanguage())->GetPersistentExpressionState();
+        PersistentExpressionState *persistent_expression_state = thread.CalculateTarget()->GetPersistentExpressionStateForLanguage(ast_type.GetMinimumLanguage());
+        
+        if (!persistent_expression_state)
+            return ValueObjectSP();
+        
         ConstString persistent_variable_name (persistent_expression_state->GetNextPersistentVariableName());
 
         lldb::ValueObjectSP const_valobj_sp;