[LLDB] Fixes summary formatter for libc++ map allowing modification of contained value

Reviewed By: clayborg

Differential Revision: https://reviews.llvm.org/D140624

3 files changed, 64 insertions, 0 deletions

diff --git a/lldb/test/API/python_api/value/change_values/libcxx/map/Makefile b/lldb/test/API/python_api/value/change_values/libcxx/map/Makefile
new file mode 100644
index 0000000..564cbad
--- /dev/null
+++ b/lldb/test/API/python_api/value/change_values/libcxx/map/Makefile
@@ -0,0 +1,6 @@
+CXX_SOURCES := main.cpp
+
+USE_LIBCPP := 1
+
+CXXFLAGS_EXTRAS := -O0
+include Makefile.rules
diff --git a/lldb/test/API/python_api/value/change_values/libcxx/map/TestChangeValue.py b/lldb/test/API/python_api/value/change_values/libcxx/map/TestChangeValue.py
new file mode 100644
index 0000000..087e4c8
--- /dev/null
+++ b/lldb/test/API/python_api/value/change_values/libcxx/map/TestChangeValue.py
@@ -0,0 +1,51 @@
+"""
+Test change libc++ map values.
+"""
+
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class LibcxxChangeValueTestCase(TestBase):
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+
+    @add_test_categories(["libc++"])
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24772")
+    def test(self):
+        """Test that we can change values of libc++ map."""
+        self.build()
+        self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
+
+        bkpt = self.target().FindBreakpointByID(
+            lldbutil.run_break_set_by_source_regexp(
+                self, "Set break point at this line."))
+
+        self.runCmd("run", RUN_SUCCEEDED)
+
+        # Get Frame #0.
+        target = self.dbg.GetSelectedTarget()
+        process = target.GetProcess()
+        self.assertState(process.GetState(), lldb.eStateStopped)
+        thread = lldbutil.get_stopped_thread(
+            process, lldb.eStopReasonBreakpoint)
+        self.assertTrue(
+            thread.IsValid(),
+            "There should be a thread stopped due to breakpoint condition")
+        frame0 = thread.GetFrameAtIndex(0)
+        self.assertTrue(frame0.IsValid(), "Got a valid frame.")
+
+        val_value = frame0.FindVariable("M")
+        self.assertTrue(val_value.IsValid(), "Got the SBValue for val")
+        pair0 = val_value.GetChildMemberWithName("[0]")
+        self.assertTrue(pair0.IsValid(), "Got the SBValue for [0]")
+        self.assertTrue(pair0.GetNumChildren() == 2, "Got 2 children")
+        pair0_second = pair0.GetChildMemberWithName("second")
+        self.assertTrue(pair0_second.IsValid(), "Got the SBValue for [0].second")
+        result = pair0_second.SetValueFromCString("12345")
+        self.assertTrue(result, "Setting val returned True.")
+        result = pair0_second.GetValueAsUnsigned()
+        self.assertTrue(result == 12345, "Got correct value (12345)")
diff --git a/lldb/test/API/python_api/value/change_values/libcxx/map/main.cpp b/lldb/test/API/python_api/value/change_values/libcxx/map/main.cpp
new file mode 100644
index 0000000..4e1ee21
--- /dev/null
+++ b/lldb/test/API/python_api/value/change_values/libcxx/map/main.cpp
@@ -0,0 +1,7 @@
+#include <map>
+
+int main()
+{
+    std::map<int, int> M = {{1,1},{2,2}};
+    return M[1]; // Set break point at this line.
+}