Add TestCrashDuringStep

this tests that a crash that happens during instruction step is reported correctly.

llvm-svn: 245440

3 files changed, 86 insertions, 0 deletions

diff --git a/lldb/test/functionalities/thread/crash_during_step/Makefile b/lldb/test/functionalities/thread/crash_during_step/Makefile
new file mode 100644
index 00000000000..26db4816b6e
--- /dev/null
+++ b/lldb/test/functionalities/thread/crash_during_step/Makefile
@@ -0,0 +1,4 @@
+LEVEL = ../../../make
+
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/test/functionalities/thread/crash_during_step/TestCrashDuringStep.py b/lldb/test/functionalities/thread/crash_during_step/TestCrashDuringStep.py
new file mode 100644
index 00000000000..13cb2f73d2f
--- /dev/null
+++ b/lldb/test/functionalities/thread/crash_during_step/TestCrashDuringStep.py
@@ -0,0 +1,66 @@
+"""
+Test that step-inst over a crash behaves correctly.
+"""
+
+import os
+import unittest2
+import lldb
+from lldbtest import *
+import lldbutil
+
+class CreateDuringStepTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @skipUnlessDarwin
+    @dsym_test
+    def test_step_inst_with_dsym(self):
+        """Test thread creation during step-inst handling."""
+        self.buildDsym(dictionary=self.getBuildFlags())
+        self.crash_during_step_inst_test()
+
+    @dwarf_test
+    @expectedFailureAndroid("llvm.org/pr24497", archs=['arm', 'aarch64'])
+    def test_step_inst_with_dwarf(self):
+        """Test thread creation during step-inst handling."""
+        self.buildDwarf(dictionary=self.getBuildFlags())
+        self.crash_during_step_inst_test()
+
+    def setUp(self):
+        TestBase.setUp(self)
+        self.breakpoint = line_number('main.cpp', '// Set breakpoint here')
+
+    def crash_during_step_inst_test(self):
+        exe = os.path.join(os.getcwd(), "a.out")
+
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target and target.IsValid(), "Target is valid")
+
+        self.bp_num = lldbutil.run_break_set_by_file_and_line (self, "main.cpp", self.breakpoint, num_expected_locations=1)
+
+        # Run the program.
+        process = target.LaunchSimple(None, None, self.get_process_working_directory())
+        self.assertTrue(process and process.IsValid(), PROCESS_IS_VALID)
+
+        # The stop reason should be breakpoint.
+        self.assertEqual(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED)
+        self.assertEqual(lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint).IsValid(), 1,
+                STOPPED_DUE_TO_BREAKPOINT)
+
+        thread = process.GetThreadAtIndex(0)
+        self.assertTrue(thread and thread.IsValid(), "Thread is valid")
+
+        # Keep stepping until the inferior crashes
+        while process.GetState() == lldb.eStateStopped and not lldbutil.is_thread_crashed(self, thread):
+            thread.StepInstruction(False)
+
+        self.assertEqual(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED)
+        self.assertTrue(lldbutil.is_thread_crashed(self, thread), "Thread has crashed")
+        process.Kill()
+
+
+if __name__ == '__main__':
+    import atexit
+    lldb.SBDebugger.Initialize()
+    atexit.register(lambda: lldb.SBDebugger.Terminate())
+    unittest2.main()
diff --git a/lldb/test/functionalities/thread/crash_during_step/main.cpp b/lldb/test/functionalities/thread/crash_during_step/main.cpp
new file mode 100644
index 00000000000..02f3ce33822
--- /dev/null
+++ b/lldb/test/functionalities/thread/crash_during_step/main.cpp
@@ -0,0 +1,16 @@
+//===-- main.cpp ------------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+void (*crash)() = nullptr;
+
+int main()
+{
+    crash(); // Set breakpoint here
+    return 0;
+}