diff options
Diffstat (limited to 'gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method')
3 files changed, 106 insertions, 0 deletions
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method/Makefile b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method/Makefile new file mode 100644 index 00000000000..31f2d5e8fc2 --- /dev/null +++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method/Makefile @@ -0,0 +1,6 @@ +CXX_SOURCES := main.cpp + +include Makefile.rules + +clean:: + rm -rf $(wildcard *.o *.d *.dSYM) diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method/TestCallOverriddenMethod.py b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method/TestCallOverriddenMethod.py new file mode 100644 index 00000000000..57987c8cb36 --- /dev/null +++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method/TestCallOverriddenMethod.py @@ -0,0 +1,82 @@ +""" +Test calling an overriden method. + +Note: + This verifies that LLDB is correctly building the method overrides table. + If this table is not built correctly then calls to overridden methods in + derived classes may generate references to non-existant vtable entries, + as the compiler treats the overridden method as a totally new virtual + method definition. + <rdar://problem/14205774> + +""" + +import lldb +from lldbsuite.test.decorators import * +from lldbsuite.test.lldbtest import * +from lldbsuite.test import lldbutil + +class ExprCommandCallOverriddenMethod(TestBase): + + mydir = TestBase.compute_mydir(__file__) + + def setUp(self): + # Call super's setUp(). + TestBase.setUp(self) + # Find the line number to break for main.c. + self.line = line_number('main.cpp', '// Set breakpoint here') + + def test_call_on_base(self): + """Test calls to overridden methods in derived classes.""" + self.build() + + # Set breakpoint in main and run exe + self.runCmd("file " + self.getBuildArtifact("a.out"), + CURRENT_EXECUTABLE_SET) + lldbutil.run_break_set_by_file_and_line( + self, "main.cpp", self.line, num_expected_locations=-1, loc_exact=True) + + self.runCmd("run", RUN_SUCCEEDED) + + # Test call to method in base class (this should always work as the base + # class method is never an override). + self.expect("expr b->foo()", substrs=["= 2"]) + + # Test calling the base class. + self.expect("expr realbase.foo()", substrs=["= 1"]) + + @skipIfLinux # Returns wrong result code on some platforms. + def test_call_on_derived(self): + """Test calls to overridden methods in derived classes.""" + self.build() + + # Set breakpoint in main and run exe + self.runCmd("file " + self.getBuildArtifact("a.out"), + CURRENT_EXECUTABLE_SET) + lldbutil.run_break_set_by_file_and_line( + self, "main.cpp", self.line, num_expected_locations=-1, loc_exact=True) + + self.runCmd("run", RUN_SUCCEEDED) + + # Test call to overridden method in derived class (this will fail if the + # overrides table is not correctly set up, as Derived::foo will be assigned + # a vtable entry that does not exist in the compiled program). + self.expect("expr d.foo()", substrs=["= 2"]) + + @skipIf(oslist=["linux"], archs=["aarch64"]) + @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr43707") + def test_call_on_temporary(self): + """Test calls to overridden methods in derived classes.""" + self.build() + + # Set breakpoint in main and run exe + self.runCmd("file " + self.getBuildArtifact("a.out"), + CURRENT_EXECUTABLE_SET) + lldbutil.run_break_set_by_file_and_line( + self, "main.cpp", self.line, num_expected_locations=-1, loc_exact=True) + + self.runCmd("run", RUN_SUCCEEDED) + + # Test with locally constructed instances. + self.expect("expr Base().foo()", substrs=["= 1"]) + self.expect("expr Derived().foo()", substrs=["= 2"]) diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method/main.cpp b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method/main.cpp new file mode 100644 index 00000000000..87997fa354c --- /dev/null +++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/call-overridden-method/main.cpp @@ -0,0 +1,18 @@ +class Base { +public: + virtual ~Base() {} + virtual int foo() { return 1; } +}; + +class Derived : public Base { +public: + virtual int foo() { return 2; } +}; + +int main() { + Base realbase; + realbase.foo(); + Derived d; + Base *b = &d; + return 0; // Set breakpoint here +} |