From 9b0c0c0a997139b8b1da58bd72ca496e1ab6de1a Mon Sep 17 00:00:00 2001
From: "Dan Thompson (SBS)" <danthom@microsoft.com>
Date: Tue, 23 Apr 2019 19:38:07 -0700
Subject: [PATCH] Detect and display 'stripped' PDB symbol type.

---
 DbgProvider/internal/Native/DbgHelp.cs       | 26 ++++++++++++++++++++
 DbgProvider/public/Debugger/DbgModuleInfo.cs | 15 +++++++++++
 2 files changed, 41 insertions(+)

diff --git a/DbgProvider/internal/Native/DbgHelp.cs b/DbgProvider/internal/Native/DbgHelp.cs
index 3a9e9f7..22eafe7 100644
--- a/DbgProvider/internal/Native/DbgHelp.cs
+++ b/DbgProvider/internal/Native/DbgHelp.cs
@@ -3764,6 +3764,32 @@ namespace MS.Dbg
             }
             return 0;
         }
+
+
+        public static IMAGEHLP_MODULEW64 GetModuleInfo( WDebugClient debugClient,
+                                                        ulong address )
+        {
+            return DbgEngDebugger._GlobalDebugger.ExecuteOnDbgEngThread( () =>
+                {
+                    return GetModuleInfo_naked( debugClient, address );
+                } );
+        }
+
+
+        private static unsafe IMAGEHLP_MODULEW64 GetModuleInfo_naked( WDebugClient debugClient, ulong address )
+        {
+            IntPtr hProcess = _GetHProcForDebugClient( debugClient );
+
+            IMAGEHLP_MODULEW64 modInfo = new IMAGEHLP_MODULEW64();
+            modInfo.SizeOfStruct = (uint) Marshal.SizeOf( modInfo );
+
+            bool itWorked = NativeMethods.SymGetModuleInfo64( hProcess, address, &modInfo );
+
+            if( !itWorked )
+                throw new DbgEngException( Marshal.GetLastWin32Error() );
+
+            return modInfo;
+        } // end GetModuleInfo_naked()
     } // end class DbgHelp
 
 
diff --git a/DbgProvider/public/Debugger/DbgModuleInfo.cs b/DbgProvider/public/Debugger/DbgModuleInfo.cs
index e6feade..19e4b59 100644
--- a/DbgProvider/public/Debugger/DbgModuleInfo.cs
+++ b/DbgProvider/public/Debugger/DbgModuleInfo.cs
@@ -570,8 +570,23 @@ namespace MS.Dbg
             { DEBUG_SYMTYPE.SYM,      new ColorString(                        "('sym' symbols)" )      .MakeReadOnly() },
         };
 
+        private static readonly ColorString s_strippedPdbStatusString = new ColorString( ConsoleColor.DarkGreen, "(pdb " )
+            .AppendFg( ConsoleColor.DarkYellow ).Append( "(stripped)" )
+            .AppendFg( ConsoleColor.DarkGreen ).Append( ")" )
+            .MakeReadOnly();
+
         private ColorString _GetSymbolTypeString()
         {
+            if( SymbolType == DEBUG_SYMTYPE.PDB )
+            {
+                var modInfo = DbgHelp.GetModuleInfo( Debugger.DebuggerInterface, BaseAddress );
+                if( modInfo.GlobalSymbols == 0 )
+                {
+                    // Looks like a "stripped" PDB.
+                    return s_strippedPdbStatusString;
+                }
+            }
+
             ColorString cs;
             if( !sm_symStatusStrings.TryGetValue( SymbolType, out cs ) )
             {