paulherman created this revision.
paulherman added reviewers: clayborg, sivachandra, spyffe.
paulherman added a subscriber: lldb-commits.
Consider having a global variable 'a' and a static variable with the same name
inside a class. This resolves the arbitrary choice when resolving the name 'a'.
http://reviews.llvm.org/D12044
Files:
source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h
test/lang/cpp/scope/Makefile
test/lang/cpp/scope/TestCppScope.py
test/lang/cpp/scope/main.cpp
Index: test/lang/cpp/scope/main.cpp
===================================================================
--- /dev/null
+++ test/lang/cpp/scope/main.cpp
@@ -0,0 +1,25 @@
+class A {
+public:
+ static int a;
+ int b;
+};
+
+class B {
+public:
+ static int a;
+ int b;
+};
+
+struct C {
+ static int a;
+};
+
+int A::a = 1111;
+int B::a = 2222;
+int C::a = 3333;
+int a = 4444;
+
+int main() // break here
+{
+ return 0;
+}
Index: test/lang/cpp/scope/TestCppScope.py
===================================================================
--- /dev/null
+++ test/lang/cpp/scope/TestCppScope.py
@@ -0,0 +1,76 @@
+"""
+Test scopes in C++.
+"""
+import lldb
+from lldbtest import *
+import lldbutil
+
+class TestCppScopes(TestBase):
+
+ mydir = TestBase.compute_mydir(__file__)
+
+ @skipUnlessDarwin
+ @dsym_test
+ def test_with_dsym_and_run_command(self):
+ self.buildDsym()
+ self.check()
+
+ @dwarf_test
+ def test_with_dwarf_and_run_command(self):
+ self.buildDwarf()
+ self.check()
+
+ def setUp(self):
+ TestBase.setUp(self)
+
+ def check(self):
+ # Get main source file
+ src_file = "main.cpp"
+ src_file_spec = lldb.SBFileSpec(src_file)
+ self.assertTrue(src_file_spec.IsValid(), "Main source file")
+
+ # Get the path of the executable
+ cwd = os.getcwd()
+ exe_file = "a.out"
+ exe_path = os.path.join(cwd, exe_file)
+
+ # Load the executable
+ target = self.dbg.CreateTarget(exe_path)
+ self.assertTrue(target.IsValid(), VALID_TARGET)
+
+ # Break on main function
+ main_breakpoint = target.BreakpointCreateBySourceRegex("// break here", src_file_spec)
+ self.assertTrue(main_breakpoint.IsValid() and main_breakpoint.GetNumLocations() >= 1, VALID_BREAKPOINT)
+
+ # Launch the process
+ args = None
+ env = None
+ process = target.LaunchSimple(args, env, cwd)
+ self.assertTrue(process.IsValid(), PROCESS_IS_VALID)
+
+ # Get the thread of the process
+ self.assertTrue(process.GetState() == lldb.eStateStopped, PROCESS_STOPPED)
+ thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
+
+ # Get current fream of the thread at the breakpoint
+ frame = thread.GetSelectedFrame()
+
+ # Test result for scopes of variables
+ test_result = frame.EvaluateExpression("A::a")
+ self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 1111, "A::a = 1111")
+
+ test_result = frame.EvaluateExpression("B::a")
+ self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 2222, "B::a = 2222")
+
+ test_result = frame.EvaluateExpression("C::a")
+ self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 3333, "C::a = 3333")
+
+ test_result = frame.EvaluateExpression("a")
+ self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 4444, "a = 4444")
+
+
+if __name__ == '__main__':
+ import atexit
+ lldb.SBDebugger.Initialize()
+ atexit.register(lambda: lldb.SBDebugger.Terminate())
+ unittest2.main()
Index: test/lang/cpp/scope/Makefile
===================================================================
--- /dev/null
+++ test/lang/cpp/scope/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules
Index: source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h
===================================================================
--- source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h
+++ source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h
@@ -322,6 +322,12 @@
const DWARFDebugInfoEntry *die,
const lldb::addr_t func_low_pc);
+ lldb::VariableSP ParseGlobalVariableDIE(
+ const lldb_private::SymbolContext& sc,
+ DWARFCompileUnit* dwarf_cu,
+ const DWARFDebugInfoEntry *die,
+ const lldb::addr_t func_low_pc);
+
size_t ParseVariables(
const lldb_private::SymbolContext& sc,
DWARFCompileUnit* dwarf_cu,
Index: source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
+++ source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
@@ -7386,7 +7386,7 @@
die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu);
if (die)
{
- VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS));
+ VariableSP var_sp (ParseGlobalVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS));
if (var_sp)
{
variables->AddVariableIfUnique (var_sp);
@@ -7410,6 +7410,31 @@
return 0;
}
+VariableSP
+SymbolFileDWARF::ParseGlobalVariableDIE
+(
+ const SymbolContext& sc,
+ DWARFCompileUnit* dwarf_cu,
+ const DWARFDebugInfoEntry *die,
+ const lldb::addr_t func_low_pc
+)
+{
+ assert(sc.function == NULL);
+ assert(sc.comp_unit != NULL);
+
+ VariableSP var_sp(ParseVariableDIE(sc, dwarf_cu, die, func_low_pc));
+
+ if (var_sp)
+ {
+ const DWARFDebugInfoEntry *parent_die = GetDeclContextDIEContainingDIE(dwarf_cu, die);
+ if (parent_die->Tag() != DW_TAG_class_type && parent_die->Tag() != DW_TAG_structure_type)
+ return var_sp;
+ else
+ return VariableSP();
+ }
+
+ return var_sp;
+}
VariableSP
SymbolFileDWARF::ParseVariableDIE
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