Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/test/msan/dtor-derived-class.cc

@@ -0,0 +1,39 @@
+// RUN: %clangxx_msan %s -O0 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t >%t.out 2>&1
+// RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t >%t.out 2>&1
+// RUN: %clangxx_msan %s -O2 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1  %run %t >%t.out 2>&1
+
+#include <sanitizer/msan_interface.h>
+#include <assert.h>
+
+struct Base {
+  int x;
+  Base() { x = 5; }
+  virtual ~Base() {}
+};
+
+struct Derived : public Base {
+  int y;
+  Derived() { y = 10; }
+  ~Derived() {}
+};
+
+int main() {
+  Derived *d = new Derived();
+  d->~Derived();
+
+  // Verify that local pointer is unpoisoned, and that the object's
+  // members are.
+  assert(__msan_test_shadow(&d, sizeof(d)) == -1);
+  assert(__msan_test_shadow(&d->x, sizeof(d->x)) != -1);
+  assert(__msan_test_shadow(&d->y, sizeof(d->y)) != -1);
+
+  Base *b = new Derived();
+  b->~Base();
+
+  // Verify that local pointer is unpoisoned, and that the object's
+  // members are.
+  assert(__msan_test_shadow(&b, sizeof(b)) == -1);
+  assert(__msan_test_shadow(&b->x, sizeof(b->x)) != -1);
+
+  return 0;
+}