[LLDB] Add asan tests for libsanitizers.

This patch tests LLDB integration with libsanitizers for ASan. This
integration works through the ASanLibsanitizers plugin in the
InstrumentationRuntime.

rdar://111856681

Author: usama54321

lldb/test/API/functionalities/asan/Makefile

@@ -1,4 +1,8 @@
 C_SOURCES := main.c
-CFLAGS_EXTRAS := -fsanitize=address -g -gcolumn-info
+asan: CFLAGS_EXTRAS := -fsanitize=address -g -gcolumn-info
+asan: all
+
+libsanitizers: CFLAGS_EXTRAS := -fsanitize=address -fsanitize-stable-abi -g -gcolumn-info
+libsanitizers: all
 
 include Makefile.rules

lldb/test/API/functionalities/asan/TestMemoryHistory.py

@@ -9,15 +9,21 @@
 from lldbsuite.test import lldbplatform
 from lldbsuite.test import lldbutil
 
+from functionalities.libsanitizers.util import no_libsanitizers
 
 class AsanTestCase(TestBase):
     @skipIfFreeBSD  # llvm.org/pr21136 runtimes not yet available by default
     @expectedFailureNetBSD
     @skipUnlessAddressSanitizer
     def test(self):
-        self.build()
+        self.build(make_targets=["asan"])
         self.asan_tests()
 
+    @skipIf(oslist=no_match(["macosx"]))
+    def test_libsanitizers_asan(self):
+        self.build(make_targets=["libsanitizers"])
+        self.libsanitizer_tests()
+
     def setUp(self):
         # Call super's setUp().
         TestBase.setUp(self)
@@ -26,6 +32,71 @@ def setUp(self):
         self.line_free = line_number("main.c", "// free line")
         self.line_breakpoint = line_number("main.c", "// break line")
 
+    # Test line numbers: rdar://126237493
+    def libsanitizer_tests(self):
+        target = self.createTestTarget()
+
+        if no_libsanitizers(self):
+            self.skipTest("libsanitizers not found")
+
+        self.runCmd(
+            "env SanitizersAddress=1 MallocSanitizerZone=1 MallocSecureAllocator=0"
+        )
+
+        self.runCmd("run")
+
+        # In libsanitizers, memory history is not supported until a report has been generated
+        self.expect(
+            "thread list",
+            "Process should be stopped due to ASan report",
+            substrs=["stopped", "stop reason = Use of deallocated memory"],
+        )
+
+        # test the 'memory history' command
+        self.expect(
+            "memory history 'pointer'",
+            substrs=[
+                "Memory deallocated by Thread",
+                "a.out`f2",
+                "main.c",
+                "Memory allocated by Thread",
+                "a.out`f1",
+                "main.c",
+            ],
+        )
+
+        # do the same using SB API
+        process = self.dbg.GetSelectedTarget().process
+        val = (
+            process.GetSelectedThread().GetSelectedFrame().EvaluateExpression("pointer")
+        )
+        addr = val.GetValueAsUnsigned()
+        threads = process.GetHistoryThreads(addr)
+        self.assertEqual(threads.GetSize(), 2)
+
+        history_thread = threads.GetThreadAtIndex(0)
+        self.assertTrue(history_thread.num_frames >= 2)
+        self.assertEqual(
+            history_thread.frames[1].GetLineEntry().GetFileSpec().GetFilename(),
+            "main.c",
+        )
+
+        history_thread = threads.GetThreadAtIndex(1)
+        self.assertTrue(history_thread.num_frames >= 2)
+        self.assertEqual(
+            history_thread.frames[1].GetLineEntry().GetFileSpec().GetFilename(),
+            "main.c",
+        )
+
+        # let's free the container (SBThreadCollection) and see if the
+        # SBThreads still live
+        threads = None
+        self.assertTrue(history_thread.num_frames >= 2)
+        self.assertEqual(
+            history_thread.frames[1].GetLineEntry().GetFileSpec().GetFilename(),
+            "main.c",
+        )
+
     def asan_tests(self):
         target = self.createTestTarget()
 

lldb/test/API/functionalities/asan/TestReportData.py

@@ -9,16 +9,22 @@
 from lldbsuite.test.lldbtest import *
 from lldbsuite.test import lldbutil
 
+from functionalities.libsanitizers.util import no_libsanitizers
 
 class AsanTestReportDataCase(TestBase):
     @skipIfFreeBSD  # llvm.org/pr21136 runtimes not yet available by default
     @expectedFailureNetBSD
     @skipUnlessAddressSanitizer
     @skipIf(archs=["i386"], bugnumber="llvm.org/PR36710")
     def test(self):
-        self.build()
+        self.build(make_targets=["asan"])
         self.asan_tests()
 
+    @skipIf(oslist=no_match(["macosx"]))
+    def test_libsanitizers_asan(self):
+        self.build(make_targets=["libsanitizers"])
+        self.asan_tests(libsanitizers=True)
+
     def setUp(self):
         # Call super's setUp().
         TestBase.setUp(self)
@@ -29,10 +35,18 @@ def setUp(self):
         self.line_crash = line_number("main.c", "// BOOM line")
         self.col_crash = 16
 
-    def asan_tests(self):
+    def asan_tests(self, libsanitizers=False):
         target = self.createTestTarget()
 
-        self.registerSanitizerLibrariesWithTarget(target)
+        if libsanitizers and no_libsanitizers(self):
+            self.skipTest("libsanitizers not found")
+
+        if libsanitizers:
+            self.runCmd(
+                "env SanitizersAddress=1 MallocSanitizerZone=1 MallocSecureAllocator=0"
+            )
+        else:
+            self.registerSanitizerLibrariesWithTarget(target)
 
         self.runCmd("run")
 

lldb/test/API/functionalities/libsanitizers/util.py

@@ -0,0 +1,3 @@
+def no_libsanitizers(testbase):
+    testbase.runCmd("image list libsystem_sanitizers.dylib", check=False)
+    return not "libsystem_sanitizers.dylib" in testbase.res.GetOutput()