Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/ubsan/basic/Makefile

@@ -0,0 +1,6 @@
+LEVEL = ../../../make
+
+C_SOURCES := main.c
+CFLAGS_EXTRAS := -fsanitize=undefined -g
+
+include $(LEVEL)/Makefile.rules

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/ubsan/basic/TestUbsanBasic.py

@@ -0,0 +1,90 @@
+"""
+Tests basic UndefinedBehaviorSanitizer support (detecting an alignment error).
+"""
+
+import os
+import time
+import lldb
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test.decorators import *
+import lldbsuite.test.lldbutil as lldbutil
+import json
+
+
+class UbsanBasicTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @skipUnlessUndefinedBehaviorSanitizer
+    def test(self):
+        self.build()
+        self.ubsan_tests()
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        self.line_align = line_number('main.c', '// align line')
+
+    def ubsan_tests(self):
+        # Load the test
+        exe = os.path.join(os.getcwd(), "a.out")
+        self.expect(
+            "file " + exe,
+            patterns=["Current executable set to .*a.out"])
+
+        self.runCmd("run")
+
+        process = self.dbg.GetSelectedTarget().process
+        thread = process.GetSelectedThread()
+        frame = thread.GetSelectedFrame()
+
+        # the stop reason of the thread should be breakpoint.
+        self.expect("thread list", "A ubsan issue should be detected",
+                    substrs=['stopped', 'stop reason ='])
+
+        stop_reason = thread.GetStopReason()
+        self.assertEqual(stop_reason, lldb.eStopReasonInstrumentation)
+
+        # test that the UBSan dylib is present
+        self.expect(
+            "image lookup -n __ubsan_on_report",
+            "__ubsan_on_report should be present",
+            substrs=['1 match found'])
+
+        # We should be stopped in __ubsan_on_report
+        self.assertTrue("__ubsan_on_report" in frame.GetFunctionName())
+
+        # The stopped thread backtrace should contain either 'align line'
+        found = False
+        for i in range(thread.GetNumFrames()):
+            frame = thread.GetFrameAtIndex(i)
+            if frame.GetLineEntry().GetFileSpec().GetFilename() == "main.c":
+                if frame.GetLineEntry().GetLine() == self.line_align:
+                    found = True
+        self.assertTrue(found)
+
+        backtraces = thread.GetStopReasonExtendedBacktraces(
+            lldb.eInstrumentationRuntimeTypeUndefinedBehaviorSanitizer)
+        self.assertTrue(backtraces.GetSize() == 1)
+
+        self.expect(
+            "thread info -s",
+            "The extended stop info should contain the UBSan provided fields",
+            substrs=[
+                "instrumentation_class",
+                "memory_address",
+                "description",
+                "filename",
+                "line",
+                "col"])
+
+        output_lines = self.res.GetOutput().split('\n')
+        json_line = '\n'.join(output_lines[2:])
+        data = json.loads(json_line)
+
+        self.assertEqual(data["instrumentation_class"], "UndefinedBehaviorSanitizer")
+        self.assertEqual(data["description"], "misaligned-pointer-use")
+        self.assertEqual(data["filename"], "main.c")
+        self.assertEqual(data["line"], self.line_align)
+
+        self.runCmd("continue")

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/ubsan/basic/main.c

@@ -0,0 +1,4 @@
+int main() {
+  int data[4];
+  return *(int *)(((char *)&data[0]) + 2); // align line
+}

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/ubsan/user-expression/Makefile

@@ -0,0 +1,6 @@
+LEVEL = ../../../make
+
+C_SOURCES := main.c
+CFLAGS_EXTRAS := -fsanitize=undefined -g
+
+include $(LEVEL)/Makefile.rules

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/ubsan/user-expression/TestUbsanUserExpression.py

@@ -0,0 +1,49 @@
+"""
+Test that hitting a UBSan issue while running user expression doesn't break the evaluation.
+"""
+
+import os
+import time
+import lldb
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test.decorators import *
+import lldbsuite.test.lldbutil as lldbutil
+import json
+
+
+class UbsanUserExpressionTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @skipUnlessUndefinedBehaviorSanitizer
+    def test(self):
+        self.build()
+        self.ubsan_tests()
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        self.line_breakpoint = line_number('main.c', '// breakpoint line')
+
+    def ubsan_tests(self):
+        # Load the test
+        exe = os.path.join(os.getcwd(), "a.out")
+        self.expect(
+            "file " + exe,
+            patterns=["Current executable set to .*a.out"])
+
+        self.runCmd("breakpoint set -f main.c -l %d" % self.line_breakpoint)
+
+        self.runCmd("run")
+
+        process = self.dbg.GetSelectedTarget().process
+        thread = process.GetSelectedThread()
+        frame = thread.GetSelectedFrame()
+
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped', 'stop reason = breakpoint'])
+
+        self.expect("p foo()", substrs=["(int) $0 = 42"])
+
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped', 'stop reason = breakpoint'])

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/ubsan/user-expression/main.c

@@ -0,0 +1,9 @@
+int foo() {
+  int data[4];
+  int x = *(int *)(((char *)&data[0]) + 2);
+  return 42;
+}
+
+int main() {
+  return 0; // breakpoint line
+}