[PATCH] D48303: Don't take the address of an xvalue when printing an expr result

[Raphael Isemann via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL336582: Don't take the address of an xvalue when printing an expr result (authored by teemperor, committed by ).
Herald added a subscriber: llvm-commits.

Changed prior to commit:
  https://reviews.llvm.org/D48303?vs=154656&id=154670#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D48303

Files:
  lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/Makefile
  lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/TestXValuePrinting.py
  lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/main.cpp
  lldb/trunk/source/Plugins/ExpressionParser/Clang/ASTResultSynthesizer.cpp


Index: lldb/trunk/source/Plugins/ExpressionParser/Clang/ASTResultSynthesizer.cpp
===================================================================
--- lldb/trunk/source/Plugins/ExpressionParser/Clang/ASTResultSynthesizer.cpp
+++ lldb/trunk/source/Plugins/ExpressionParser/Clang/ASTResultSynthesizer.cpp
@@ -292,9 +292,8 @@
   //
   //   - During dematerialization, $0 is ignored.
 
-  bool is_lvalue = (last_expr->getValueKind() == VK_LValue ||
-                    last_expr->getValueKind() == VK_XValue) &&
-                   (last_expr->getObjectKind() == OK_Ordinary);
+  bool is_lvalue = last_expr->getValueKind() == VK_LValue &&
+                   last_expr->getObjectKind() == OK_Ordinary;
 
   QualType expr_qual_type = last_expr->getType();
   const clang::Type *expr_type = expr_qual_type.getTypePtr();
Index: lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/Makefile
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/Makefile
+++ lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules
Index: lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/TestXValuePrinting.py
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/TestXValuePrinting.py
+++ lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/TestXValuePrinting.py
@@ -0,0 +1,37 @@
+from __future__ import print_function
+
+
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class ExprXValuePrintingTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+
+        self.main_source = "main.cpp"
+        self.main_source_spec = lldb.SBFileSpec(self.main_source)
+
+    def do_test(self, dictionary=None):
+        """Printing an xvalue should work."""
+        self.build(dictionary=dictionary)
+
+        (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(self, 
+                                          '// Break here', self.main_source_spec)
+        frame = thread.GetFrameAtIndex(0)
+
+        value = frame.EvaluateExpression("foo().data")
+        self.assertTrue(value.IsValid())
+        self.assertTrue(value.GetError().Success())
+        self.assertEqual(value.GetValueAsSigned(), 1234)
+
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr21765")
+    def test(self):
+        self.do_test()
+
Index: lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/main.cpp
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/main.cpp
+++ lldb/trunk/packages/Python/lldbsuite/test/expression_command/xvalue/main.cpp
@@ -0,0 +1,12 @@
+struct Tmp
+{
+  int data = 1234;
+};
+
+Tmp foo() { return Tmp(); }
+
+int main(int argc, char const *argv[])
+{
+  int something = foo().data;
+  return 0; // Break here
+}


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