Vendor import of lldb trunk r256945:

https://llvm.org/svn/llvm-project/lldb/trunk@256945

3 files changed, 208 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/lang/cpp/virtual/Makefile b/packages/Python/lldbsuite/test/lang/cpp/virtual/Makefile
new file mode 100644
index 0000000..314f1cb
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/cpp/virtual/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules
diff --git a/packages/Python/lldbsuite/test/lang/cpp/virtual/TestVirtual.py b/packages/Python/lldbsuite/test/lang/cpp/virtual/TestVirtual.py
new file mode 100644
index 0000000..1553a43
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/cpp/virtual/TestVirtual.py
@@ -0,0 +1,90 @@
+"""
+Test C++ virtual function and virtual inheritance.
+"""
+
+from __future__ import print_function
+
+import os, time
+import re
+import lldb
+from lldbsuite.test.lldbtest import *
+import lldbsuite.test.lldbutil as lldbutil
+
+def Msg(expr, val):
+    return "'expression %s' matches the output (from compiled code): %s" % (expr, val)
+
+class CppVirtualMadness(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # This is the pattern by design to match the "my_expr = 'value'" output from
+    # printf() stmts (see main.cpp).
+    pattern = re.compile("^([^=]*) = '([^=]*)'$")
+
+    # Assert message.
+    PRINTF_OUTPUT_GROKKED = "The printf output from compiled code is parsed correctly"
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # Find the line number to break for main.cpp.
+        self.source = 'main.cpp'
+        self.line = line_number(self.source, '// Set first breakpoint here.')
+
+    @expectedFailureIcc('llvm.org/pr16808') # lldb does not call the correct virtual function with icc
+    @expectedFailureAll(oslist=['windows'])
+    def test_virtual_madness(self):
+        """Test that expression works correctly with virtual inheritance as well as virtual function."""
+        self.build()
+
+        # Bring the program to the point where we can issue a series of
+        # 'expression' command to compare against the golden output.
+        self.dbg.SetAsync(False)
+        
+        # Create a target by the debugger.
+        target = self.dbg.CreateTarget("a.out")
+        self.assertTrue(target, VALID_TARGET)
+
+        # Create the breakpoint inside function 'main'.
+        breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
+        self.assertTrue(breakpoint, VALID_BREAKPOINT)
+
+        # Now launch the process, and do not stop at entry point.
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+        self.assertTrue(process, PROCESS_IS_VALID)
+        
+        self.assertTrue(process.GetState() == lldb.eStateStopped)
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
+        self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
+
+        # First, capture the golden output from the program itself from the
+        # series of printf statements.
+        stdout = process.GetSTDOUT(1024)
+        
+        self.assertIsNotNone(stdout, "Encountered an error reading the process's output")
+
+        # This golden list contains a list of "my_expr = 'value' pairs extracted
+        # from the golden output.
+        gl = []
+
+        # Scan the golden output line by line, looking for the pattern:
+        #
+        #     my_expr = 'value'
+        #
+        for line in stdout.split(os.linesep):
+            match = self.pattern.search(line)
+            if match:
+                my_expr, val = match.group(1), match.group(2)
+                gl.append((my_expr, val))
+        #print("golden list:", gl)
+
+        # Now iterate through the golden list, comparing against the output from
+        # 'expression var'.
+        for my_expr, val in gl:
+
+            self.runCmd("expression %s" % my_expr)
+            output = self.res.GetOutput()
+            
+            # The expression output must match the oracle.
+            self.expect(output, Msg(my_expr, val), exe=False,
+                substrs = [val])
diff --git a/packages/Python/lldbsuite/test/lang/cpp/virtual/main.cpp b/packages/Python/lldbsuite/test/lang/cpp/virtual/main.cpp
new file mode 100644
index 0000000..bed1422
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/cpp/virtual/main.cpp
@@ -0,0 +1,113 @@
+#include <stdio.h>
+#include <stdint.h>
+
+class A
+{
+public:
+    A () : m_pad ('c') {}
+
+    virtual ~A () {}
+    
+    virtual const char * a()
+    {
+        return __PRETTY_FUNCTION__;
+    }
+
+    virtual const char * b()
+    {
+        return __PRETTY_FUNCTION__;
+    }
+
+    virtual const char * c()
+    {
+        return __PRETTY_FUNCTION__;
+    }
+protected:
+    char m_pad;
+};
+
+class AA
+{
+public:
+    AA () : m_pad('A') {}
+    virtual ~AA () {}
+
+    virtual const char * aa()
+    {
+        return __PRETTY_FUNCTION__;
+    }
+  
+protected:
+    char m_pad;
+};
+
+class B : virtual public A, public AA
+{
+public:
+    B () : m_pad ('c')  {}
+
+    virtual ~B () {}
+    
+    virtual const char * a()
+    {
+        return __PRETTY_FUNCTION__;
+    }
+
+    virtual const char * b()
+    {
+        return __PRETTY_FUNCTION__;
+    }
+protected:
+    char m_pad;
+};
+
+class C : public B, virtual public A
+{
+public:
+    C () : m_pad ('c') {}
+
+    virtual ~C () {}
+    
+    virtual const char * a()
+    {
+        return __PRETTY_FUNCTION__;
+    }
+protected:
+    char m_pad;
+};
+
+int main (int argc, char const *argv[], char const *envp[])
+{
+    A *a_as_A = new A();
+    B *b_as_B = new B();
+    A *b_as_A = b_as_B;
+    C *c_as_C = new C();
+    A *c_as_A = c_as_C;
+
+    printf ("a_as_A->a() = '%s'\n", a_as_A->a());
+    printf ("a_as_A->b() = '%s'\n", a_as_A->b());
+    printf ("a_as_A->c() = '%s'\n", a_as_A->c());
+    printf ("b_as_A->a() = '%s'\n", b_as_A->a());
+    printf ("b_as_A->b() = '%s'\n", b_as_A->b());
+    printf ("b_as_A->c() = '%s'\n", b_as_A->c());
+    printf ("b_as_B->aa() = '%s'\n", b_as_B->aa());
+    printf ("c_as_A->a() = '%s'\n", c_as_A->a());
+    printf ("c_as_A->b() = '%s'\n", c_as_A->b());
+    printf ("c_as_A->c() = '%s'\n", c_as_A->c());
+    printf ("c_as_C->aa() = '%s'\n", c_as_C->aa());
+    puts("");// Set first breakpoint here.
+    // then evaluate:
+    // expression a_as_A->a()
+    // expression a_as_A->b()
+    // expression a_as_A->c()
+    // expression b_as_A->a()
+    // expression b_as_A->b()
+    // expression b_as_A->c()
+    // expression b_as_B->aa()
+    // expression c_as_A->a()
+    // expression c_as_A->b()
+    // expression c_as_A->c()
+    // expression c_as_C->aa()
+    
+    return 0;
+}