Index: lldb/bindings/interface/SBModule.i
===================================================================
--- lldb/bindings/interface/SBModule.i
+++ lldb/bindings/interface/SBModule.i
@@ -344,6 +344,15 @@
     lldb::SBAddress
     GetObjectFileEntryPointAddress() const;
 
+    %feature("docstring", "
+    Returns the number of modules in the module cache. This is an
+    implementation detail exposed for testing and should not be relied upon.
+
+    @return
+        The number of modules in the module cache.") GetNumberAllocatedModules;
+    static uint32_t
+    GetNumberAllocatedModules();
+
     STRING_EXTENSION(SBModule)
 
 #ifdef SWIGPYTHON
Index: lldb/include/lldb/API/SBModule.h
===================================================================
--- lldb/include/lldb/API/SBModule.h
+++ lldb/include/lldb/API/SBModule.h
@@ -288,6 +288,9 @@
   lldb::SBAddress GetObjectFileHeaderAddress() const;
   lldb::SBAddress GetObjectFileEntryPointAddress() const;
 
+  /// Get the number of global modules.
+  static uint32_t GetNumberAllocatedModules();
+
 private:
   friend class SBAddress;
   friend class SBFrame;
Index: lldb/packages/Python/lldbsuite/test/lldbtest.py
===================================================================
--- lldb/packages/Python/lldbsuite/test/lldbtest.py
+++ lldb/packages/Python/lldbsuite/test/lldbtest.py
@@ -2022,6 +2022,14 @@
         for target in targets:
             self.dbg.DeleteTarget(target)
 
+        # Modules are not orphaned during reproducer replay because they're
+        # leaked on purpose.
+        if not configuration.is_reproducer():
+            # Assert that all targets are deleted.
+            self.assertEqual(self.dbg.GetNumTargets(), 0)
+            # Assert that the global module cache is empty.
+            self.assertEqual(lldb.SBModule.GetNumberAllocatedModules(), 0)
+
         # Do this last, to make sure it's in reverse order from how we setup.
         Base.tearDown(self)
 
Index: lldb/source/API/SBModule.cpp
===================================================================
--- lldb/source/API/SBModule.cpp
+++ lldb/source/API/SBModule.cpp
@@ -683,6 +683,13 @@
   return LLDB_RECORD_RESULT(sb_addr);
 }
 
+uint32_t SBModule::GetNumberAllocatedModules() {
+  LLDB_RECORD_STATIC_METHOD_NO_ARGS(uint32_t, SBModule,
+                                    GetNumberAllocatedModules);
+
+  return Module::GetNumberAllocatedModules();
+}
+
 namespace lldb_private {
 namespace repro {
 
@@ -757,6 +764,8 @@
                              GetObjectFileHeaderAddress, ());
   LLDB_REGISTER_METHOD_CONST(lldb::SBAddress, SBModule,
                              GetObjectFileEntryPointAddress, ());
+  LLDB_REGISTER_STATIC_METHOD(uint32_t, SBModule, GetNumberAllocatedModules,
+                              ());
 }
 
 }