Debugger: Rework DIETypeUnit.

DIETypeUnit now inherits from DIECompileUnitBase in order to handle
things like setting the language info properly. This was previously
missing and would lead to occasional crashes with DWARF4.

src/apps/debugger/dwarf/DebugInfoEntries.cpp

@@ -2536,8 +2536,6 @@ DIESharedType::AddAttribute_decl_column(uint16 attributeName,
 
 
 DIETypeUnit::DIETypeUnit()
-	:
-	fLanguage(0)
 {
 }
 
@@ -2549,15 +2547,6 @@ DIETypeUnit::Tag() const
 }
 
 
-status_t
-DIETypeUnit::AddAttribute_language(uint16 attributeName,
-	const AttributeValue& value)
-{
-	fLanguage = value.constant;
-	return B_OK;
-}
-
-
 // #pragma mark - DIETemplateTypeParameterPack
 
 

src/apps/debugger/dwarf/DebugInfoEntries.h

@@ -1606,19 +1606,11 @@ private:
 };
 
 
-class DIETypeUnit : public DebugInfoEntry {
+class DIETypeUnit : public DIECompileUnitBase {
 public:
 								DIETypeUnit();
 
 	virtual	uint16				Tag() const;
-
-			uint16				Language() const	{ return fLanguage; }
-
-	virtual	status_t			AddAttribute_language(uint16 attributeName,
-									const AttributeValue& value);
-
-private:
-			uint16				fLanguage;
 };