3 files changed, 70 insertions, 0 deletions
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/linux/builtin_trap/Makefile b/gnu/llvm/lldb/packages/Python/lldbsuite/test/linux/builtin_trap/Makefile
new file mode 100644
index 00000000000..99998b20bcb
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/linux/builtin_trap/Makefile
@@ -0,0 +1,3 @@
+CXX_SOURCES := main.cpp
+
+include Makefile.rules
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/linux/builtin_trap/TestBuiltinTrap.py b/gnu/llvm/lldb/packages/Python/lldbsuite/test/linux/builtin_trap/TestBuiltinTrap.py
new file mode 100644
index 00000000000..22de873e29f
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/linux/builtin_trap/TestBuiltinTrap.py
@@ -0,0 +1,51 @@
+"""
+Test lldb ability to unwind a stack with a function containing a call to the
+'__builtin_trap' intrinsic, which GCC (4.6) encodes to an illegal opcode.
+"""
+
+
+
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class BuiltinTrapTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # Find the line number to break at.
+        self.line = line_number('main.cpp', '// Set break point at this line.')
+
+    # gcc generates incorrect linetable
+    @expectedFailureAll(archs="arm", compiler="gcc", triple=".*-android")
+    @expectedFailureAll(oslist=['linux'], archs=['arm', 'aarch64'])
+    @skipIfWindows
+    def test_with_run_command(self):
+        """Test that LLDB handles a function with __builtin_trap correctly."""
+        self.build()
+        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)
+
+        # The stop reason of the thread should be breakpoint.
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped',
+                             'stop reason = breakpoint'])
+
+        # print backtrace, expect both 'bar' and 'main' functions to be listed
+        self.expect('bt', substrs=['bar', 'main'])
+
+        # go up one frame
+        self.runCmd("up", RUN_SUCCEEDED)
+
+        # evaluate a local
+        self.expect('p foo', substrs=['= 5'])
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/linux/builtin_trap/main.cpp b/gnu/llvm/lldb/packages/Python/lldbsuite/test/linux/builtin_trap/main.cpp
new file mode 100644
index 00000000000..f005e697c8e
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/linux/builtin_trap/main.cpp
@@ -0,0 +1,16 @@
+//===-- main.cpp ------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+void bar(int const *foo) {
+  __builtin_trap(); // Set break point at this line.
+}
+
+int main() {
+  int foo = 5;
+  bar(&foo);
+}