vendor/lldb/lldb-trunk-r256945

3 files changed, 234 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/lang/c/anonymous/Makefile b/packages/Python/lldbsuite/test/lang/c/anonymous/Makefile
new file mode 100644
index 000000000000..b09a579159d4
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/c/anonymous/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+
+C_SOURCES := main.c
+
+include $(LEVEL)/Makefile.rules
diff --git a/packages/Python/lldbsuite/test/lang/c/anonymous/TestAnonymous.py b/packages/Python/lldbsuite/test/lang/c/anonymous/TestAnonymous.py
new file mode 100644
index 000000000000..7cb66ba8238b
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/c/anonymous/TestAnonymous.py
@@ -0,0 +1,147 @@
+"""Test that anonymous structs/unions are transparent to member access"""
+
+from __future__ import print_function
+
+
+
+import os, time
+import lldb
+from lldbsuite.test.lldbtest import *
+import lldbsuite.test.lldbutil as lldbutil
+
+class AnonymousTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @skipIfIcc # llvm.org/pr15036: LLDB generates an incorrect AST layout for an anonymous struct when DWARF is generated by ICC
+    def test_expr_nest(self):
+        self.build()
+        self.common_setup(self.line0)
+
+        # These should display correctly.
+        self.expect("expression n->foo.d", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ["= 4"])
+            
+        self.expect("expression n->b", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ["= 2"])
+
+    def test_expr_child(self):
+        self.build()
+        self.common_setup(self.line1)
+
+        # These should display correctly.
+        self.expect("expression c->foo.d", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ["= 4"])
+            
+        self.expect("expression c->grandchild.b", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ["= 2"])
+
+    @skipIfIcc # llvm.org/pr15036: This particular regression was introduced by r181498
+    def test_expr_grandchild(self):
+        self.build()
+        self.common_setup(self.line2)
+
+        # These should display correctly.
+        self.expect("expression g.child.foo.d", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ["= 4"])
+            
+        self.expect("expression g.child.b", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ["= 2"])
+
+    def test_expr_parent(self):
+        self.build()
+        if "clang" in self.getCompiler() and "3.4" in self.getCompilerVersion():
+            self.skipTest("llvm.org/pr16214 -- clang emits partial DWARF for structures referenced via typedef")
+        self.common_setup(self.line2)
+
+        # These should display correctly.
+        self.expect("expression pz", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ["(type_z *) $", " = 0x0000"])
+
+        self.expect("expression z.y", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ["(type_y) $", "dummy = 2"])
+
+    @expectedFailureWindows('llvm.org/pr21550')
+    def test_expr_null(self):
+        self.build()
+        self.common_setup(self.line2)
+
+        # This should fail because pz is 0, but it succeeds on OS/X.
+        # This fails on Linux with an upstream error "Couldn't dematerialize struct", as does "p *n" with "int *n = 0".
+        # Note that this can also trigger llvm.org/pr15036 when run interactively at the lldb command prompt.
+        self.expect("expression *(type_z *)pz", error = True)
+
+    def test_child_by_name(self):
+        self.build()
+        
+        # Set debugger into synchronous mode
+        self.dbg.SetAsync(False)
+
+        # Create a target
+        exe = os.path.join (os.getcwd(), "a.out")
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        break_in_main = target.BreakpointCreateBySourceRegex ('// Set breakpoint 2 here.', lldb.SBFileSpec(self.source))
+        self.assertTrue(break_in_main, VALID_BREAKPOINT)
+
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+        self.assertTrue (process, PROCESS_IS_VALID)
+
+        threads = lldbutil.get_threads_stopped_at_breakpoint (process, break_in_main)
+        if len(threads) != 1:
+            self.fail ("Failed to stop at breakpoint in main.")
+
+        thread = threads[0]
+        frame = thread.frames[0]
+
+        if not frame.IsValid():
+            self.fail ("Failed to get frame 0.")
+
+        var_n = frame.FindVariable("n")
+        if not var_n.IsValid():
+            self.fail ("Failed to get the variable 'n'")
+
+        elem_a = var_n.GetChildMemberWithName("a")
+        if not elem_a.IsValid():
+            self.fail ("Failed to get the element a in n")
+
+        error = lldb.SBError()
+        value = elem_a.GetValueAsSigned(error, 1000)
+        if not error.Success() or value != 0:
+            self.fail ("failed to get the correct value for element a in n")
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # Find the line numbers to break in main.c.
+        self.source = 'main.c'
+        self.line0 = line_number(self.source, '// Set breakpoint 0 here.')
+        self.line1 = line_number(self.source, '// Set breakpoint 1 here.')
+        self.line2 = line_number(self.source, '// Set breakpoint 2 here.')
+
+    def common_setup(self, line):
+        
+        # Set debugger into synchronous mode
+        self.dbg.SetAsync(False)
+
+        # Create a target
+        exe = os.path.join(os.getcwd(), "a.out")
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        # Set breakpoints inside and outside methods that take pointers to the containing struct.
+        lldbutil.run_break_set_by_file_and_line (self, self.source, line, num_expected_locations=1, loc_exact=True)
+
+        # 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)
+
+        # The stop reason of the thread should be breakpoint.
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+            substrs = ['stopped',
+                       'stop reason = breakpoint'])
+
+        # The breakpoint should have a hit count of 1.
+        self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
+            substrs = [' resolved, hit count = 1'])
diff --git a/packages/Python/lldbsuite/test/lang/c/anonymous/main.c b/packages/Python/lldbsuite/test/lang/c/anonymous/main.c
new file mode 100644
index 000000000000..58ac85b7d431
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/c/anonymous/main.c
@@ -0,0 +1,82 @@
+#include <stdio.h>
+
+struct anonymous_nest {
+  struct {
+    struct {
+      int a;
+      int b;
+    }; // anonymous
+    struct {
+      int c;
+      int d;
+    } foo;
+  }; // anonymous
+};
+
+struct anonymous_child {
+  struct {
+    struct {
+      int a;
+      int b;
+    } grandchild;
+    struct {
+      int c;
+      int d;
+    } foo;
+  }; // anonymous
+};
+
+struct anonymous_grandchild {
+  struct {
+    struct {
+      int a;
+      int b;
+    }; // anonymous
+    struct {
+      int c;
+      int d;
+    } foo;
+  } child;
+};
+
+int processor_nest (struct anonymous_nest *n)
+{
+  return n->foo.d + n->b; // Set breakpoint 0 here.
+}
+
+int processor_child (struct anonymous_child *c)
+{
+  return c->foo.d + c->grandchild.b; // Set breakpoint 1 here.
+}
+
+int processor_grandchild (struct anonymous_grandchild *g)
+{
+  return g->child.foo.d + g->child.b;
+}
+
+
+
+typedef struct {
+    int dummy;
+} type_y;
+
+typedef struct {
+    type_y y;
+} type_z;
+
+
+
+int main()
+{
+  struct anonymous_nest n = { 0, 2, 0, 4 };
+  struct anonymous_child c = { 0, 2, 0, 4 };
+  struct anonymous_grandchild g = { 0, 2, 0, 4 };
+  type_z *pz = 0;
+  type_z z = {{2}};
+
+  printf("%d\n", processor_nest(&n));
+  printf("%d\n", processor_child(&c));
+  printf("%d\n", processor_grandchild(&g)); // Set breakpoint 2 here.
+
+  return 0;
+}