[Lldb-commits] [lldb] [lldb] Fix a crash when using .dwp files and make type lookup reliable with the index cache (PR #79544)

[via lldb-commits]

================
@@ -1675,20 +1675,20 @@ Type *SymbolFileDWARF::ResolveType(const DWARFDIE &die,
 
 CompileUnit *
 SymbolFileDWARF::GetCompUnitForDWARFCompUnit(DWARFCompileUnit &dwarf_cu) {
+
   if (dwarf_cu.IsDWOUnit()) {
-    DWARFCompileUnit *non_dwo_cu =
-        static_cast<DWARFCompileUnit *>(dwarf_cu.GetUserData());
+    DWARFCompileUnit *non_dwo_cu = dwarf_cu.GetSkeletonUnit();
     assert(non_dwo_cu);
----------------
jeffreytan81 wrote:

Add a comment explain why this assertion can hold - why `non_dwo_cu` can't be 
null.

https://github.com/llvm/llvm-project/pull/79544
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