1 files changed, 81 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/TestSigtrampUnwind.py b/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/TestSigtrampUnwind.py
new file mode 100644
index 000000000000..ddfb1122b6f1
--- /dev/null
+++ b/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/TestSigtrampUnwind.py
@@ -0,0 +1,81 @@
+"""
+Test that we can backtrace correctly with 'sigtramp' functions on the stack
+"""
+
+from __future__ import print_function
+
+
+
+import os, time
+import lldb
+from lldbsuite.test.lldbtest import *
+import lldbsuite.test.lldbutil as lldbutil
+
+class SigtrampUnwind(TestBase):
+    mydir = TestBase.compute_mydir(__file__)
+
+    # On different platforms the "_sigtramp" and "__kill" frames are likely to be different.
+    # This test could probably be adapted to run on linux/*bsd easily enough.
+    @skipUnlessDarwin
+    def test (self):
+        """Test that we can backtrace correctly with _sigtramp on the stack"""
+        self.build()
+        self.setTearDownCleanup()
+
+        exe = os.path.join(os.getcwd(), "a.out")
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+
+        lldbutil.run_break_set_by_file_and_line (self, "main.c", line_number('main.c', '// Set breakpoint here'), num_expected_locations=1)
+
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+
+        if not process:
+            self.fail("SBTarget.Launch() failed")
+
+        if process.GetState() != lldb.eStateStopped:
+            self.fail("Process should be in the 'stopped' state, "
+                      "instead the actual state is: '%s'" %
+                      lldbutil.state_type_to_str(process.GetState()))
+
+        self.expect("pro handle  -n false -p true -s false SIGUSR1", "Have lldb pass SIGUSR1 signals",
+            substrs = ["SIGUSR1", "true", "false", "false"])
+
+        lldbutil.run_break_set_by_symbol (self, "handler", num_expected_locations=1, module_name="a.out")
+
+        self.runCmd("continue")
+
+        thread = process.GetThreadAtIndex(0)
+
+        found_handler = False
+        found_sigtramp = False
+        found_kill = False
+        found_main = False
+
+        for f in thread.frames:
+            if f.GetFunctionName() == "handler":
+                found_handler = True
+            if f.GetFunctionName() == "_sigtramp":
+                found_sigtramp = True
+            if f.GetFunctionName() == "__kill":
+                found_kill = True
+            if f.GetFunctionName() == "main":
+                found_main = True
+
+        if self.TraceOn():
+            print("Backtrace once we're stopped:")
+            for f in thread.frames:
+                print("  %d %s" % (f.GetFrameID(), f.GetFunctionName()))
+
+        if found_handler == False:
+            self.fail("Unable to find handler() in backtrace.")
+
+        if found_sigtramp == False:
+            self.fail("Unable to find _sigtramp() in backtrace.")
+
+        if found_kill == False:
+            self.fail("Unable to find kill() in backtrace.")
+
+        if found_main == False:
+            self.fail("Unable to find main() in backtrace.")