1 files changed, 62 insertions, 0 deletions
diff --git a/lldb/test/API/windows/launch/replace-dll/TestReplaceDLL.py b/lldb/test/API/windows/launch/replace-dll/TestReplaceDLL.py
new file mode 100644
index 000000000000..afa97cf4afe5
--- /dev/null
+++ b/lldb/test/API/windows/launch/replace-dll/TestReplaceDLL.py
@@ -0,0 +1,62 @@
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+import gc
+import os
+
+
+class ReplaceDllTestCase(TestBase):
+    @skipUnlessWindows
+    def test(self):
+        """
+        Test that LLDB unlocks module files once all references are released.
+        """
+
+        exe = self.getBuildArtifact("a.out")
+        foo = self.getBuildArtifact("foo.dll")
+        bar = self.getBuildArtifact("bar.dll")
+
+        self.build(
+            dictionary={
+                "DYLIB_NAME": "foo",
+                "DYLIB_C_SOURCES": "foo.c",
+                "C_SOURCES": "test.c",
+            }
+        )
+        self.build(
+            dictionary={
+                "DYLIB_ONLY": "YES",
+                "DYLIB_NAME": "bar",
+                "DYLIB_C_SOURCES": "bar.c",
+            }
+        )
+
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        shlib_names = ["foo"]
+        environment = self.registerSharedLibrariesWithTarget(target, shlib_names)
+        process = target.LaunchSimple(
+            None, environment, self.get_process_working_directory()
+        )
+        self.assertEqual(process.GetExitStatus(), 42)
+
+        module = next((m for m in target.modules if "foo" in m.file.basename), None)
+        self.assertIsNotNone(module)
+        self.assertEqual(module.file.fullpath, foo)
+
+        target.RemoveModule(module)
+        del module
+        gc.collect()
+
+        self.dbg.MemoryPressureDetected()
+
+        os.remove(foo)
+        os.rename(bar, foo)
+
+        process = target.LaunchSimple(
+            None, environment, self.get_process_working_directory()
+        )
+        self.assertEqual(process.GetExitStatus(), 43)