[cDAC] fix bug in DacDbi GetTypeHandle (#127968)

rcj1 · web-flow · commit 421be955e4b7 · 2026-05-08T14:43:59.000-07:00
Return exception HResult when type not found
diff --git a/src/native/managed/cdac/Microsoft.Diagnostics.DataContractReader.Legacy/Dbi/DacDbiImpl.cs b/src/native/managed/cdac/Microsoft.Diagnostics.DataContractReader.Legacy/Dbi/DacDbiImpl.cs
@@ -1307,6 +1307,8 @@ public int GetTypeHandle(ulong vmModule, uint metadataToken, ulong* pRetVal)
                 default:
                     throw Marshal.GetExceptionForHR(CorDbgHResults.CORDBG_E_CLASS_NOT_LOADED)!;
             }
+            if (*pRetVal == 0)
+                throw Marshal.GetExceptionForHR(CorDbgHResults.CORDBG_E_CLASS_NOT_LOADED)!;
         }
         catch (System.Exception ex)
         {

Original file line number	Diff line number	Diff line change
`@@ -1307,6 +1307,8 @@ public int GetTypeHandle(ulong vmModule, uint metadataToken, ulong* pRetVal)`
`1307`	`1307`	`default:`
`1308`	`1308`	`throw Marshal.GetExceptionForHR(CorDbgHResults.CORDBG_E_CLASS_NOT_LOADED)!;`
`1309`	`1309`	`}`
	`1310`	`+ if (*pRetVal == 0)`
	`1311`	`+ throw Marshal.GetExceptionForHR(CorDbgHResults.CORDBG_E_CLASS_NOT_LOADED)!;`
`1310`	`1312`	`}`
`1311`	`1313`	`catch (System.Exception ex)`
`1312`	`1314`	`{`