[Lldb-commits] [lldb] DebugInfoD tests + fixing issues exposed by tests (PR #85693)

[Jonas Devlieghere via lldb-commits]

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@@ -4377,26 +4377,40 @@ const std::shared_ptr<SymbolFileDWARFDwo> &SymbolFileDWARF::GetDwpSymbolFile() {
     FileSpecList search_paths = Target::GetDefaultDebugFileSearchPaths();
     ModuleSpec module_spec;
     module_spec.GetFileSpec() = m_objfile_sp->GetFileSpec();
+    FileSpec dwp_filespec;
     for (const auto &symfile : symfiles.files()) {
       module_spec.GetSymbolFileSpec() =
           FileSpec(symfile.GetPath() + ".dwp", symfile.GetPathStyle());
       LLDB_LOG(log, "Searching for DWP using: \"{0}\"",
                module_spec.GetSymbolFileSpec());
-      FileSpec dwp_filespec =
+      dwp_filespec =
           PluginManager::LocateExecutableSymbolFile(module_spec, search_paths);
       if (FileSystem::Instance().Exists(dwp_filespec)) {
-        LLDB_LOG(log, "Found DWP file: \"{0}\"", dwp_filespec);
-        DataBufferSP dwp_file_data_sp;
-        lldb::offset_t dwp_file_data_offset = 0;
-        ObjectFileSP dwp_obj_file = ObjectFile::FindPlugin(
-            GetObjectFile()->GetModule(), &dwp_filespec, 0,
-            FileSystem::Instance().GetByteSize(dwp_filespec), dwp_file_data_sp,
-            dwp_file_data_offset);
-        if (dwp_obj_file) {
-          m_dwp_symfile = std::make_shared<SymbolFileDWARFDwo>(
-              *this, dwp_obj_file, DIERef::k_file_index_mask);
-          break;
-        }
+        break;
+      }
+    }
+    if (!FileSystem::Instance().Exists(dwp_filespec)) {
+      LLDB_LOG(log, "No DWP file found locally");
+      // Fill in the UUID for the module we're trying to match for, so we can
+      // find the correct DWP file, as the Debuginfod plugin uses *only* this
+      // data to correctly match the DWP file with the binary.
+      module_spec.GetUUID() = m_objfile_sp->GetUUID();
+      dwp_filespec =
+          PluginManager::LocateExecutableSymbolFile(module_spec, search_paths);
+      // Set it back so it's not outliving the m_objfile_sp shared pointer.
+      module_spec.GetUUID() = {};
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JDevlieghere wrote:

On line 4397 you've copied the UUID into the ModuleSpec so I don't think there's an issue with it outliving the `m_objfile_sp` as it has been copied. If there's another reason you need to undo setting the UUID, you probably want to remember what it was set to originally and put that back rather than just clearing it?

https://github.com/llvm/llvm-project/pull/85693