Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

11 files changed, 666 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/.categories b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/.categories
new file mode 100644
index 00000000000..c00c25822e4
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/.categories
@@ -0,0 +1 @@
+basic_process
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/Makefile b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/Makefile
new file mode 100644
index 00000000000..00054aabd4a
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/Makefile
@@ -0,0 +1,32 @@
+LD_EXTRAS := -L. -lloadunload_d
+CXX_SOURCES := main.cpp
+USE_LIBDL := 1
+
+a.out: lib_b lib_a lib_c lib_d hidden_lib_d
+
+include Makefile.rules
+
+lib_a: lib_b
+	$(MAKE) -f $(MAKEFILE_RULES) \
+		DYLIB_ONLY=YES DYLIB_CXX_SOURCES=a.cpp DYLIB_NAME=loadunload_a \
+		LD_EXTRAS="-L. -lloadunload_b"
+
+lib_b:
+	$(MAKE) -f $(MAKEFILE_RULES) \
+		DYLIB_ONLY=YES DYLIB_CXX_SOURCES=b.cpp DYLIB_NAME=loadunload_b
+
+lib_c:
+	$(MAKE) -f $(MAKEFILE_RULES) \
+		DYLIB_ONLY=YES DYLIB_CXX_SOURCES=c.cpp DYLIB_NAME=loadunload_c
+
+lib_d:
+	$(MAKE) -f $(MAKEFILE_RULES) \
+		DYLIB_ONLY=YES DYLIB_CXX_SOURCES=d.cpp DYLIB_NAME=loadunload_d
+ifeq ($(OS),Darwin)
+	install_name_tool -id @executable_path/libloadunload_d.dylib libloadunload_d.dylib
+endif
+
+hidden_lib_d:
+	mkdir -p hidden
+	$(MAKE) VPATH=$(SRCDIR)/hidden -C hidden -f $(MAKEFILE_RULES) \
+		DYLIB_ONLY=YES DYLIB_CXX_SOURCES=d.cpp DYLIB_NAME=loadunload_d
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/TestLoadUnload.py b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/TestLoadUnload.py
new file mode 100644
index 00000000000..ae0934c7461
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/TestLoadUnload.py
@@ -0,0 +1,452 @@
+"""
+Test that breakpoint by symbol name works correctly with dynamic libs.
+"""
+
+from __future__ import print_function
+
+
+import os
+import re
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+@skipIfWindows  # Windows doesn't have dlopen and friends, dynamic libraries work differently
+class LoadUnloadTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    NO_DEBUG_INFO_TESTCASE = True
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        self.setup_test()
+        # Invoke the default build rule.
+        self.build()
+        # Find the line number to break for main.cpp.
+        self.line = line_number(
+            'main.cpp',
+            '// Set break point at this line for test_lldb_process_load_and_unload_commands().')
+        self.line_d_function = line_number(
+            'd.cpp', '// Find this line number within d_dunction().')
+
+    def setup_test(self):
+        lldbutil.mkdir_p(self.getBuildArtifact("hidden"))
+        if not self.platformIsDarwin():
+            if not lldb.remote_platform and "LD_LIBRARY_PATH" in os.environ:
+                self.runCmd(
+                    "settings set target.env-vars " +
+                    self.dylibPath +
+                    "=" +
+                    os.environ["LD_LIBRARY_PATH"] +
+                    ":" +
+                    self.getBuildDir())
+            else:
+                if lldb.remote_platform:
+                    wd = lldb.remote_platform.GetWorkingDirectory()
+                else:
+                    wd = self.getBuildDir()
+                self.runCmd(
+                    "settings set target.env-vars " +
+                    self.dylibPath +
+                    "=" +
+                    wd)
+
+    def copy_shlibs_to_remote(self, hidden_dir=False):
+        """ Copies the shared libs required by this test suite to remote.
+        Does nothing in case of non-remote platforms.
+        """
+        if lldb.remote_platform:
+            ext = 'so'
+            if self.platformIsDarwin():
+                ext = 'dylib'
+
+            shlibs = ['libloadunload_a.' + ext, 'libloadunload_b.' + ext,
+                      'libloadunload_c.' + ext, 'libloadunload_d.' + ext]
+            wd = lldb.remote_platform.GetWorkingDirectory()
+            cwd = os.getcwd()
+            for f in shlibs:
+                err = lldb.remote_platform.Put(
+                    lldb.SBFileSpec(self.getBuildArtifact(f)),
+                    lldb.SBFileSpec(os.path.join(wd, f)))
+                if err.Fail():
+                    raise RuntimeError(
+                        "Unable copy '%s' to '%s'.\n>>> %s" %
+                        (f, wd, err.GetCString()))
+            if hidden_dir:
+                shlib = 'libloadunload_d.' + ext
+                hidden_dir = os.path.join(wd, 'hidden')
+                hidden_file = os.path.join(hidden_dir, shlib)
+                err = lldb.remote_platform.MakeDirectory(hidden_dir)
+                if err.Fail():
+                    raise RuntimeError(
+                        "Unable to create a directory '%s'." % hidden_dir)
+                err = lldb.remote_platform.Put(
+                    lldb.SBFileSpec(os.path.join('hidden', shlib)),
+                    lldb.SBFileSpec(hidden_file))
+                if err.Fail():
+                    raise RuntimeError(
+                        "Unable copy 'libloadunload_d.so' to '%s'.\n>>> %s" %
+                        (wd, err.GetCString()))
+
+    def setSvr4Support(self, enabled):
+        self.runCmd(
+            "settings set plugin.process.gdb-remote.use-libraries-svr4 {enabled}".format(
+                enabled="true" if enabled else "false"
+            )
+        )
+
+    # libloadunload_d.so does not appear in the image list because executable
+    # dependencies are resolved relative to the debuggers PWD. Bug?
+    @expectedFailureAll(oslist=["linux"])
+    @skipIfFreeBSD  # llvm.org/pr14424 - missing FreeBSD Makefiles/testcase support
+    @not_remote_testsuite_ready
+    @skipIfWindows  # Windows doesn't have dlopen and friends, dynamic libraries work differently
+    @expectedFailureNetBSD
+    def test_modules_search_paths(self):
+        """Test target modules list after loading a different copy of the library libd.dylib, and verifies that it works with 'target modules search-paths add'."""
+        if self.platformIsDarwin():
+            dylibName = 'libloadunload_d.dylib'
+        else:
+            dylibName = 'libloadunload_d.so'
+
+        # The directory with the dynamic library we did not link to.
+        new_dir = os.path.join(self.getBuildDir(), "hidden")
+
+        old_dylib = os.path.join(self.getBuildDir(), dylibName)
+        new_dylib = os.path.join(new_dir, dylibName)
+        exe = self.getBuildArtifact("a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        self.expect("target modules list",
+                    substrs=[old_dylib])
+        # self.expect("target modules list -t 3",
+        #    patterns = ["%s-[^-]*-[^-]*" % self.getArchitecture()])
+        # Add an image search path substitution pair.
+        self.runCmd(
+            "target modules search-paths add %s %s" %
+            (self.getBuildDir(), new_dir))
+
+        self.expect("target modules search-paths list",
+                    substrs=[self.getBuildDir(), new_dir])
+
+        self.expect(
+            "target modules search-paths query %s" %
+            self.getBuildDir(),
+            "Image search path successfully transformed",
+            substrs=[new_dir])
+
+        # Obliterate traces of libd from the old location.
+        os.remove(old_dylib)
+        # Inform (DY)LD_LIBRARY_PATH of the new path, too.
+        env_cmd_string = "settings set target.env-vars " + self.dylibPath + "=" + new_dir
+        if self.TraceOn():
+            print("Set environment to: ", env_cmd_string)
+        self.runCmd(env_cmd_string)
+        self.runCmd("settings show target.env-vars")
+
+        remove_dyld_path_cmd = "settings remove target.env-vars " + self.dylibPath
+        self.addTearDownHook(
+            lambda: self.dbg.HandleCommand(remove_dyld_path_cmd))
+
+        self.runCmd("run")
+
+        self.expect(
+            "target modules list",
+            "LLDB successfully locates the relocated dynamic library",
+            substrs=[new_dylib])
+
+    # libloadunload_d.so does not appear in the image list because executable
+    # dependencies are resolved relative to the debuggers PWD. Bug?
+    @expectedFailureAll(oslist=["linux"])
+    @skipIfFreeBSD  # llvm.org/pr14424 - missing FreeBSD Makefiles/testcase support
+    @expectedFailureAndroid  # wrong source file shows up for hidden library
+    @skipIfWindows  # Windows doesn't have dlopen and friends, dynamic libraries work differently
+    @skipIfDarwinEmbedded
+    @expectedFailureNetBSD
+    def test_dyld_library_path(self):
+        """Test (DY)LD_LIBRARY_PATH after moving libd.dylib, which defines d_function, somewhere else."""
+        self.copy_shlibs_to_remote(hidden_dir=True)
+
+        exe = self.getBuildArtifact("a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        # Shut off ANSI color usage so we don't get ANSI escape sequences
+        # mixed in with stop locations.
+        self.dbg.SetUseColor(False)
+
+        if self.platformIsDarwin():
+            dylibName = 'libloadunload_d.dylib'
+            dsymName = 'libloadunload_d.dylib.dSYM'
+        else:
+            dylibName = 'libloadunload_d.so'
+
+        # The directory to relocate the dynamic library and its debugging info.
+        special_dir = "hidden"
+        if lldb.remote_platform:
+            wd = lldb.remote_platform.GetWorkingDirectory()
+        else:
+            wd = self.getBuildDir()
+
+        old_dir = wd
+        new_dir = os.path.join(wd, special_dir)
+        old_dylib = os.path.join(old_dir, dylibName)
+
+        remove_dyld_path_cmd = "settings remove target.env-vars " \
+                               + self.dylibPath
+        self.addTearDownHook(
+            lambda: self.dbg.HandleCommand(remove_dyld_path_cmd))
+
+        # For now we don't track (DY)LD_LIBRARY_PATH, so the old
+        # library will be in the modules list.
+        self.expect("target modules list",
+                    substrs=[os.path.basename(old_dylib)],
+                    matching=True)
+
+        lldbutil.run_break_set_by_file_and_line(
+            self, "d.cpp", self.line_d_function, num_expected_locations=1)
+        # After run, make sure the non-hidden library is picked up.
+        self.expect("run", substrs=["return", "700"])
+
+        self.runCmd("continue")
+
+        # Add the hidden directory first in the search path.
+        env_cmd_string = ("settings set target.env-vars %s=%s" %
+                          (self.dylibPath, new_dir))
+        if not self.platformIsDarwin():
+            env_cmd_string += ":" + wd
+        self.runCmd(env_cmd_string)
+
+        # This time, the hidden library should be picked up.
+        self.expect("run", substrs=["return", "12345"])
+
+    @expectedFailureAll(
+        bugnumber="llvm.org/pr25805",
+        hostoslist=["windows"],
+        triple='.*-android')
+    @skipIfFreeBSD  # llvm.org/pr14424 - missing FreeBSD Makefiles/testcase support
+    @skipIfWindows  # Windows doesn't have dlopen and friends, dynamic libraries work differently
+    def test_lldb_process_load_and_unload_commands(self):
+        self.setSvr4Support(False)
+        self.run_lldb_process_load_and_unload_commands()
+
+    @expectedFailureAll(
+        bugnumber="llvm.org/pr25805",
+        hostoslist=["windows"],
+        triple='.*-android')
+    @skipIfFreeBSD  # llvm.org/pr14424 - missing FreeBSD Makefiles/testcase support
+    @skipIfWindows  # Windows doesn't have dlopen and friends, dynamic libraries work differently
+    def test_lldb_process_load_and_unload_commands_with_svr4(self):
+        self.setSvr4Support(True)
+        self.run_lldb_process_load_and_unload_commands()
+
+    def run_lldb_process_load_and_unload_commands(self):
+        """Test that lldb process load/unload command work correctly."""
+        self.copy_shlibs_to_remote()
+
+        exe = self.getBuildArtifact("a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        # Break at main.cpp before the call to dlopen().
+        # Use lldb's process load command to load the dylib, instead.
+
+        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)
+
+        ctx = self.platformContext
+        dylibName = ctx.shlib_prefix + 'loadunload_a.' + ctx.shlib_extension
+        localDylibPath = self.getBuildArtifact(dylibName)
+        if lldb.remote_platform:
+            wd = lldb.remote_platform.GetWorkingDirectory()
+            remoteDylibPath = lldbutil.join_remote_paths(wd, dylibName)
+        else:
+            remoteDylibPath = localDylibPath
+
+        # Make sure that a_function does not exist at this point.
+        self.expect(
+            "image lookup -n a_function",
+            "a_function should not exist yet",
+            error=True,
+            matching=False,
+            patterns=["1 match found"])
+
+        # Use lldb 'process load' to load the dylib.
+        self.expect(
+            "process load %s --install=%s" % (localDylibPath, remoteDylibPath),
+            "%s loaded correctly" % dylibName,
+            patterns=[
+                'Loading "%s".*ok' % re.escape(localDylibPath),
+                'Image [0-9]+ loaded'])
+
+        # Search for and match the "Image ([0-9]+) loaded" pattern.
+        output = self.res.GetOutput()
+        pattern = re.compile("Image ([0-9]+) loaded")
+        for l in output.split(os.linesep):
+            #print("l:", l)
+            match = pattern.search(l)
+            if match:
+                break
+        index = match.group(1)
+
+        # Now we should have an entry for a_function.
+        self.expect(
+            "image lookup -n a_function",
+            "a_function should now exist",
+            patterns=[
+                "1 match found .*%s" %
+                dylibName])
+
+        # Use lldb 'process unload' to unload the dylib.
+        self.expect(
+            "process unload %s" %
+            index,
+            "%s unloaded correctly" %
+            dylibName,
+            patterns=[
+                "Unloading .* with index %s.*ok" %
+                index])
+
+        self.runCmd("process continue")
+
+    @skipIfFreeBSD  # llvm.org/pr14424 - missing FreeBSD Makefiles/testcase support
+    def test_load_unload(self):
+        self.setSvr4Support(False)
+        self.run_load_unload()
+
+    @skipIfFreeBSD  # llvm.org/pr14424 - missing FreeBSD Makefiles/testcase support
+    def test_load_unload_with_svr4(self):
+        self.setSvr4Support(True)
+        self.run_load_unload()
+
+    def run_load_unload(self):
+        """Test breakpoint by name works correctly with dlopen'ing."""
+        self.copy_shlibs_to_remote()
+
+        exe = self.getBuildArtifact("a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        # Break by function name a_function (not yet loaded).
+        lldbutil.run_break_set_by_symbol(
+            self, "a_function", num_expected_locations=0)
+
+        self.runCmd("run", RUN_SUCCEEDED)
+
+        # The stop reason of the thread should be breakpoint and at a_function.
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped',
+                             'a_function',
+                             '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'])
+
+        # Issue the 'contnue' command.  We should stop agaian at a_function.
+        # The stop reason of the thread should be breakpoint and at a_function.
+        self.runCmd("continue")
+
+        # rdar://problem/8508987
+        # The a_function breakpoint should be encountered twice.
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped',
+                             'a_function',
+                             'stop reason = breakpoint'])
+
+        # The breakpoint should have a hit count of 2.
+        self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
+                    substrs=[' resolved, hit count = 2'])
+
+    @skipIfFreeBSD  # llvm.org/pr14424 - missing FreeBSD Makefiles/testcase support
+    @skipIfWindows  # Windows doesn't have dlopen and friends, dynamic libraries work differently
+    @expectedFailureAll(archs="aarch64", oslist="linux",
+                        bugnumber="https://bugs.llvm.org/show_bug.cgi?id=27806")
+    def test_step_over_load(self):
+        self.setSvr4Support(False)
+        self.run_step_over_load()
+
+    @skipIfFreeBSD  # llvm.org/pr14424 - missing FreeBSD Makefiles/testcase support
+    @skipIfWindows  # Windows doesn't have dlopen and friends, dynamic libraries work differently
+    @expectedFailureAll(archs="aarch64", oslist="linux",
+                        bugnumber="https://bugs.llvm.org/show_bug.cgi?id=27806")
+    def test_step_over_load_with_svr4(self):
+        self.setSvr4Support(True)
+        self.run_step_over_load()
+
+    def run_step_over_load(self):
+        """Test stepping over code that loads a shared library works correctly."""
+        self.copy_shlibs_to_remote()
+
+        exe = self.getBuildArtifact("a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        # Break by function name a_function (not yet loaded).
+        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 and at a_function.
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped',
+                             'stop reason = breakpoint'])
+
+        self.runCmd(
+            "thread step-over",
+            "Stepping over function that loads library")
+
+        # The stop reason should be step end.
+        self.expect("thread list", "step over succeeded.",
+                    substrs=['stopped',
+                             'stop reason = step over'])
+
+    # We can't find a breakpoint location for d_init before launching because
+    # executable dependencies are resolved relative to the debuggers PWD. Bug?
+    @expectedFailureAll(oslist=["linux"], triple=no_match('aarch64-.*-android'))
+    @skipIfFreeBSD  # llvm.org/pr14424 - missing FreeBSD Makefiles/testcase support
+    @skipIfWindows  # Windows doesn't have dlopen and friends, dynamic libraries work differently
+    @expectedFailureNetBSD
+    def test_static_init_during_load(self):
+        """Test that we can set breakpoints correctly in static initializers"""
+        self.copy_shlibs_to_remote()
+
+        exe = self.getBuildArtifact("a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        a_init_bp_num = lldbutil.run_break_set_by_symbol(
+            self, "a_init", num_expected_locations=0)
+        b_init_bp_num = lldbutil.run_break_set_by_symbol(
+            self, "b_init", num_expected_locations=0)
+        d_init_bp_num = lldbutil.run_break_set_by_symbol(
+            self, "d_init", num_expected_locations=1)
+
+        self.runCmd("run", RUN_SUCCEEDED)
+
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped',
+                             'd_init',
+                             'stop reason = breakpoint %d' % d_init_bp_num])
+
+        self.runCmd("continue")
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped',
+                             'b_init',
+                             'stop reason = breakpoint %d' % b_init_bp_num])
+        self.expect("thread backtrace",
+                    substrs=['b_init',
+                             'dlopen',
+                             'main'])
+
+        self.runCmd("continue")
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped',
+                             'a_init',
+                             'stop reason = breakpoint %d' % a_init_bp_num])
+        self.expect("thread backtrace",
+                    substrs=['a_init',
+                             'dlopen',
+                             'main'])
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/a.cpp b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/a.cpp
new file mode 100644
index 00000000000..ec34f9b974d
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/a.cpp
@@ -0,0 +1,21 @@
+//===-- a.c -----------------------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+extern int b_function ();
+
+int a_init()
+{
+    return 234;
+}
+
+int a_global = a_init();
+
+extern "C" int
+a_function ()
+{
+    return b_function ();
+}
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/b.cpp b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/b.cpp
new file mode 100644
index 00000000000..9db93841ab7
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/b.cpp
@@ -0,0 +1,20 @@
+//===-- b.c -----------------------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+int b_init()
+{
+    return 345;
+}
+
+int b_global = b_init();
+
+int
+b_function ()
+{
+    return 500;
+}
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/c.cpp b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/c.cpp
new file mode 100644
index 00000000000..cf0c146621e
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/c.cpp
@@ -0,0 +1,12 @@
+//===-- c.c -----------------------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+extern "C" int
+c_function ()
+{
+    return 600;
+}
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/cmds.txt b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/cmds.txt
new file mode 100644
index 00000000000..1e4b198dc0d
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/cmds.txt
@@ -0,0 +1,2 @@
+breakpoint set -n a_function
+run
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/d.cpp b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/d.cpp
new file mode 100644
index 00000000000..a2135c50713
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/d.cpp
@@ -0,0 +1,20 @@
+//===-- c.c -----------------------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+int d_init()
+{
+    return 123;
+}
+
+int d_global = d_init();
+
+int
+d_function ()
+{ // Find this line number within d_dunction().
+    return 700;
+}
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/hidden/Makefile b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/hidden/Makefile
new file mode 100644
index 00000000000..17fe6582a9e
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/hidden/Makefile
@@ -0,0 +1,7 @@
+LIB_PREFIX := loadunload_
+
+DYLIB_NAME := $(LIB_PREFIX)d
+DYLIB_CXX_SOURCES := d.cpp
+DYLIB_ONLY := YES
+
+include Makefile.rules
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/hidden/d.cpp b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/hidden/d.cpp
new file mode 100644
index 00000000000..d03d3c9f8c7
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/hidden/d.cpp
@@ -0,0 +1,20 @@
+//===-- c.c -----------------------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+int d_init()
+{
+    return 456;
+}
+
+int d_global = d_init();
+
+int
+d_function ()
+{ // Find this line number within d_dunction().
+    return 12345;
+}
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/main.cpp b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/main.cpp
new file mode 100644
index 00000000000..815f030d857
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/load_unload/main.cpp
@@ -0,0 +1,79 @@
+//===-- main.c --------------------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+#include <stdio.h>
+#include <dlfcn.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <stdlib.h>
+
+int
+main (int argc, char const *argv[])
+{
+#if defined (__APPLE__)
+    const char *a_name = "@executable_path/libloadunload_a.dylib";
+    const char *c_name = "@executable_path/libloadunload_c.dylib";
+#else
+    const char *a_name = "libloadunload_a.so";
+    const char *c_name = "libloadunload_c.so";
+#endif
+    void *a_dylib_handle = NULL;
+    void *c_dylib_handle = NULL;
+    int (*a_function) (void);
+
+    a_dylib_handle = dlopen (a_name, RTLD_NOW); // Set break point at this line for test_lldb_process_load_and_unload_commands().
+    if (a_dylib_handle == NULL)
+    {
+        fprintf (stderr, "%s\n", dlerror());
+        exit (1);
+    }
+
+    a_function = (int (*) ()) dlsym (a_dylib_handle, "a_function");
+    if (a_function == NULL)
+    {
+        fprintf (stderr, "%s\n", dlerror());
+        exit (2);
+    }
+    printf ("First time around, got: %d\n", a_function ());
+    dlclose (a_dylib_handle);
+
+    c_dylib_handle = dlopen (c_name, RTLD_NOW);
+    if (c_dylib_handle == NULL)
+    {
+        fprintf (stderr, "%s\n", dlerror());
+        exit (3);
+    }
+    a_function = (int (*) ()) dlsym (c_dylib_handle, "c_function");
+    if (a_function == NULL)
+    {
+        fprintf (stderr, "%s\n", dlerror());
+        exit (4);
+    }
+
+    a_dylib_handle = dlopen (a_name, RTLD_NOW);
+    if (a_dylib_handle == NULL)
+    {
+        fprintf (stderr, "%s\n", dlerror());
+        exit (5);
+    }
+
+    a_function = (int (*) ()) dlsym (a_dylib_handle, "a_function");
+    if (a_function == NULL)
+    {
+        fprintf (stderr, "%s\n", dlerror());
+        exit (6);
+    }
+    printf ("Second time around, got: %d\n", a_function ());
+    dlclose (a_dylib_handle);
+
+    int d_function(void);
+    printf ("d_function returns: %d\n", d_function());
+
+    return 0;
+}