[Lldb-commits] [lldb] Summarize std::string's when created from data. (PR #89110)

[Greg Clayton via lldb-commits]

================
@@ -287,8 +291,52 @@ bool lldb_private::formatters::LibStdcppStringSummaryProvider(
       } else
         return true;
     } break;
-    case eAddressTypeHost:
-      break;
+    case eAddressTypeHost: {
+
+      DataExtractor data;
+      Status error;
+      valobj.GetData(data, error);
+      if (error.Fail())
+        return false;
+
+      lldb::offset_t offset = 0;
+      AddressType child_addressType = valobj.GetAddressTypeOfChildren();
+      if (child_addressType == eAddressTypeLoad)
+      {
+        // We have the host address of our std::string
+        // But we need to read the pointee data from the debugged process.
+        ProcessSP process_sp(valobj.GetProcessSP());
+        // We want to read the address from std::string, which is the first 8 bytes.
+        lldb::addr_t addr = data.GetAddress(&offset);
+        if (!addr)
+        {
----------------
clayborg wrote:

The `{` goes at the end of the `if` line per llvm coding guidelines

https://github.com/llvm/llvm-project/pull/89110