diff --git a/lldb/test/macosx/add-dsym/TestAddDsymMidExecutionCommand.py b/lldb/test/macosx/add-dsym/TestAddDsymMidExecutionCommand.py
new file mode 100644
index 0000000..ce84b2f
--- /dev/null
+++ b/lldb/test/macosx/add-dsym/TestAddDsymMidExecutionCommand.py
@@ -0,0 +1,47 @@
+"""Test that the 'add-dsym', aka 'target symbols add', succeeds in the middle of debug session."""
+
+import os, time
+import unittest2
+import lldb
+import pexpect
+from lldbtest import *
+
+@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
+class AddDsymMidExecutionCommandCase(TestBase):
+
+    mydir = os.path.join ("macosx", "add-dsym")
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        self.source = 'main.c'
+
+    def test_add_dsym_mid_execution(self):
+        """Test that add-dsym mid-execution loads the symbols at the right place for a slid binary."""
+        self.buildDsym(clean=True)
+        exe = os.path.join(os.getcwd(), "a.out")
+
+        self.target = self.dbg.CreateTarget(exe)
+        self.assertTrue(self.target, VALID_TARGET)
+
+        main_bp = self.target.BreakpointCreateByName ("main", "a.out")
+        self.assertTrue(main_bp, VALID_BREAKPOINT)
+
+        self.runCmd("settings set target.disable-aslr false")
+        self.process = self.target.LaunchSimple(None, None, os.getcwd())
+        self.assertTrue(self.process, PROCESS_IS_VALID)
+
+        # The stop reason of the thread should be breakpoint.
+        self.assertTrue(self.process.GetState() == lldb.eStateStopped,
+                        STOPPED_DUE_TO_BREAKPOINT)
+
+        self.runCmd("add-dsym hide.app/Contents/a.out.dSYM")
+
+        self.expect("frame select",
+                    substrs = ['a.out`main at main.c'])
+
+if __name__ == '__main__':
+    import atexit
+    lldb.SBDebugger.Initialize()
+    atexit.register(lambda: lldb.SBDebugger.Terminate())
+    unittest2.main()