Vendor import of lldb trunk r256945:

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

3 files changed, 73 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/linux/builtin_trap/Makefile b/packages/Python/lldbsuite/test/linux/builtin_trap/Makefile
new file mode 100644
index 0000000..8a7102e
--- /dev/null
+++ b/packages/Python/lldbsuite/test/linux/builtin_trap/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules
diff --git a/packages/Python/lldbsuite/test/linux/builtin_trap/TestBuiltinTrap.py b/packages/Python/lldbsuite/test/linux/builtin_trap/TestBuiltinTrap.py
new file mode 100644
index 0000000..ea74234
--- /dev/null
+++ b/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.
+"""
+
+from __future__ import print_function
+
+
+
+import os
+import lldb
+from lldbsuite.test.lldbtest import *
+import lldbsuite.test.lldbutil as 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.')
+
+    @expectedFailureAll("llvm.org/pr15936", compiler="gcc", compiler_version=["<=","4.6"])
+    @expectedFailureAll(archs="arm", compiler="gcc", triple=".*-android") # gcc generates incorrect linetable
+    @skipIfWindows
+    def test_with_run_command(self):
+        """Test that LLDB handles a function with __builtin_trap correctly."""
+        self.build()
+        self.runCmd("file 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/packages/Python/lldbsuite/test/linux/builtin_trap/main.cpp b/packages/Python/lldbsuite/test/linux/builtin_trap/main.cpp
new file mode 100644
index 0000000..84156ef
--- /dev/null
+++ b/packages/Python/lldbsuite/test/linux/builtin_trap/main.cpp
@@ -0,0 +1,17 @@
+//===-- 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 bar(int const *foo) {
+  __builtin_trap(); // Set break point at this line.
+}
+
+int main() {
+  int foo = 5;
+  bar(&foo);
+}