1 files changed, 90 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/python_api/watchpoint/watchlocation/TestSetWatchlocation.py b/packages/Python/lldbsuite/test/python_api/watchpoint/watchlocation/TestSetWatchlocation.py
new file mode 100644
index 000000000000..5a4a464657d6
--- /dev/null
+++ b/packages/Python/lldbsuite/test/python_api/watchpoint/watchlocation/TestSetWatchlocation.py
@@ -0,0 +1,90 @@
+"""
+Use lldb Python SBValue.WatchPointee() API to create a watchpoint for write of '*g_char_ptr'.
+"""
+
+from __future__ import print_function
+
+
+
+import os, time
+import re
+import lldb
+import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.lldbtest import *
+
+class SetWatchlocationAPITestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # Our simple source filename.
+        self.source = 'main.cpp'
+        # Find the line number to break inside main().
+        self.line = line_number(self.source, '// Set break point at this line.')
+        # This is for verifying that watch location works.
+        self.violating_func = "do_bad_thing_with_location";
+
+    @add_test_categories(['pyapi'])
+    @expectedFailureAndroid(archs=['arm', 'aarch64']) # Watchpoints not supported
+    @expectedFailureWindows("llvm.org/pr24446") # WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows
+    def test_watch_location(self):
+        """Exercise SBValue.WatchPointee() API to set a watchpoint."""
+        self.build()
+        exe = os.path.join(os.getcwd(), "a.out")
+
+        # Create a target by the debugger.
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        # Now create a breakpoint on main.c.
+        breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
+        self.assertTrue(breakpoint and
+                        breakpoint.GetNumLocations() == 1,
+                        VALID_BREAKPOINT)
+
+        # Now launch the process, and do not stop at the entry point.
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+
+        # We should be stopped due to the breakpoint.  Get frame #0.
+        process = target.GetProcess()
+        self.assertTrue(process.GetState() == lldb.eStateStopped,
+                        PROCESS_STOPPED)
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
+        frame0 = thread.GetFrameAtIndex(0)
+
+        value = frame0.FindValue('g_char_ptr',
+                                 lldb.eValueTypeVariableGlobal)
+        pointee = value.CreateValueFromAddress("pointee",
+                                               value.GetValueAsUnsigned(0),
+                                               value.GetType().GetPointeeType())
+        # Watch for write to *g_char_ptr.
+        error = lldb.SBError();
+        watchpoint = value.WatchPointee(True, False, True, error)
+        self.assertTrue(value and watchpoint,
+                        "Successfully found the pointer and set a watchpoint")
+        self.DebugSBValue(value)
+        self.DebugSBValue(pointee)
+
+        # Hide stdout if not running with '-t' option.
+        if not self.TraceOn():
+            self.HideStdout()
+
+        print(watchpoint)
+
+        # Continue.  Expect the program to stop due to the variable being written to.
+        process.Continue()
+
+        if (self.TraceOn()):
+            lldbutil.print_stacktraces(process)
+
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonWatchpoint)
+        self.assertTrue(thread, "The thread stopped due to watchpoint")
+        self.DebugSBValue(value)
+        self.DebugSBValue(pointee)
+
+        self.expect(lldbutil.print_stacktrace(thread, string_buffer=True), exe=False,
+            substrs = [self.violating_func])
+
+        # This finishes our test.