Add a test case for static member variables

- expected to fail across the board due to llvm.org/pr15401

Patch by Ashok Thirumurthi!

llvm-svn: 176362

lldb/test/lang/cpp/static_members/Makefile

@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules

lldb/test/lang/cpp/static_members/TestCPPStaticMembers.py

@@ -0,0 +1,75 @@
+"""
+Tests that C++ member and static variables have correct layout and scope.
+"""
+import lldb
+from lldbtest import *
+import lldbutil
+
+class CPPStaticMembersTestCase(TestBase):
+    
+    mydir = os.path.join("lang", "cpp", "static_members")
+    
+    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
+    @unittest2.expectedFailure # llvm.org/pr15401
+    @dsym_test
+    def test_with_dsym_and_run_command(self):
+        """Test that member variables have the correct layout, scope and qualifiers when stopped inside and outside C++ methods"""
+        self.buildDsym()
+        self.static_member_commands()
+
+    @unittest2.expectedFailure # llvm.org/pr15401
+    @dwarf_test
+    def test_with_dwarf_and_run_command(self):
+        """Test that member variables have the correct layout, scope and qualifiers when stopped inside and outside C++ methods"""
+        self.buildDwarf()
+        self.static_member_commands()
+
+    def setUp(self):
+        TestBase.setUp(self)
+    
+    def set_breakpoint(self, line):
+        lldbutil.run_break_set_by_file_and_line (self, "main.cpp", line, num_expected_locations=1, loc_exact=False)
+
+    def static_member_commands(self):
+        """Test that member variables have the correct layout, scope and qualifiers when stopped inside and outside C++ methods"""
+        self.runCmd("file a.out", CURRENT_EXECUTABLE_SET)
+
+        self.set_breakpoint(line_number('main.cpp', '// breakpoint 1'))
+        self.set_breakpoint(line_number('main.cpp', '// breakpoint 2'))
+
+        self.runCmd("process launch", RUN_SUCCEEDED)
+        self.expect("expression my_a.access()",
+                    startstr = "(long) $0 = 10")
+        
+        self.expect("expression my_a.m_a",
+                    startstr = "(short) $1 = 1")
+        
+        # Note: SymbolFileDWARF::ParseChildMembers doesn't call AddFieldToRecordType, consistent with clang's AST layout.
+        self.expect("expression my_a.s_d",
+                    startstr = "(int) $2 = 4")
+        
+        self.expect("expression my_a.s_b",
+                    startstr = "(long) $3 = 2")
+        
+        self.expect("expression A::s_b",
+                    startstr = "(long) $4 = 2")
+
+        # should not be available in global scope 
+        self.expect("expression s_d",
+                    startstr = "error: use of undeclared identifier 's_d'")
+        
+        self.runCmd("process continue")
+        self.expect("expression m_c",
+                    startstr = "(char) $5 = \'\\x03\'")
+        
+        self.expect("expression s_b",
+                    startstr = "(long) $6 = 2")
+
+        self.runCmd("process continue")
+        
+
+if __name__ == '__main__':
+    import atexit
+    lldb.SBDebugger.Initialize()
+    atexit.register(lambda: lldb.SBDebugger.Terminate())
+    unittest2.main()

lldb/test/lang/cpp/static_members/main.cpp

@@ -0,0 +1,36 @@
+//===-- main.cpp ------------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+
+struct A
+{
+    short m_a;
+    static long s_b;
+    char m_c;
+    static int s_d;
+
+    long access() {
+        return m_a + s_b + m_c + s_d; // breakpoint 2
+    }
+};
+
+long A::s_b = 2;
+int A::s_d = 4;
+
+int main()
+{
+    A my_a;
+    my_a.m_a = 1;
+    my_a.m_c = 3;
+
+    my_a.access(); // breakpoint 1 
+    return 0;
+}
+