Hide runtime support values such as clang's __vla_expr from frame variable

by respecting the "artificial" attribute on variables. Function
arguments that are artificial and useful to end-users are being
whitelisted by the language runtime.

<rdar://problem/45322477>

Differential Revision: https://reviews.llvm.org/D61451

llvm-svn: 359841

1 files changed, 47 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/lang/objcxx/hide-runtime-values/TestObjCXXHideRuntimeValues.py b/lldb/packages/Python/lldbsuite/test/lang/objcxx/hide-runtime-values/TestObjCXXHideRuntimeValues.py
new file mode 100644
index 00000000000..04b2fa22f16
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/lang/objcxx/hide-runtime-values/TestObjCXXHideRuntimeValues.py
@@ -0,0 +1,47 @@
+import lldb
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test.decorators import *
+import lldbsuite.test.lldbutil as lldbutil
+import os
+import unittest2
+
+
+class TestObjCXXHideRuntimeSupportValues(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        TestBase.setUp(self)
+
+    def test_hide_runtime_support_values(self):
+        self.build()
+        _, process, _, _ = lldbutil.run_to_source_breakpoint(
+            self, 'break here', lldb.SBFileSpec('main.mm'))
+
+        var_opts = lldb.SBVariablesOptions()
+        var_opts.SetIncludeArguments(True)
+        var_opts.SetIncludeLocals(True)
+        var_opts.SetInScopeOnly(True)
+        var_opts.SetIncludeStatics(False)
+        var_opts.SetIncludeRuntimeSupportValues(False)
+        var_opts.SetUseDynamic(lldb.eDynamicCanRunTarget)
+        values = self.frame().GetVariables(var_opts)
+
+        def shows_var(name):
+            for value in values:
+                if value.name == name:
+                    return True
+            return False
+        # ObjC method.
+        values = self.frame().GetVariables(var_opts)
+        self.assertFalse(shows_var("this"))
+        self.assertTrue(shows_var("self"))
+        self.assertTrue(shows_var("_cmd"))
+        self.assertTrue(shows_var("c"))
+
+        process.Continue()
+        # C++ method.
+        values = self.frame().GetVariables(var_opts)
+        self.assertTrue(shows_var("this"))
+        self.assertFalse(shows_var("self"))
+        self.assertFalse(shows_var("_cmd"))