1 files changed, 75 insertions, 0 deletions
diff --git a/test/asan/TestCases/contiguous_container.cc b/test/asan/TestCases/contiguous_container.cc
new file mode 100644
index 000000000000..0f3a7db5b060
--- /dev/null
+++ b/test/asan/TestCases/contiguous_container.cc
@@ -0,0 +1,75 @@
+// RUN: %clangxx_asan -O %s -o %t && %run %t
+//
+// Test __sanitizer_annotate_contiguous_container.
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <sanitizer/asan_interface.h>
+
+void TestContainer(size_t capacity) {
+  char *beg = new char[capacity];
+  char *end = beg + capacity;
+  char *mid = beg + capacity;
+  char *old_mid = 0;
+
+  for (int i = 0; i < 10000; i++) {
+    size_t size = rand() % (capacity + 1);
+    assert(size <= capacity);
+    old_mid = mid;
+    mid = beg + size;
+    __sanitizer_annotate_contiguous_container(beg, end, old_mid, mid);
+
+    for (size_t idx = 0; idx < size; idx++)
+        assert(!__asan_address_is_poisoned(beg + idx));
+    for (size_t idx = size; idx < capacity; idx++)
+        assert(__asan_address_is_poisoned(beg + idx));
+    assert(__sanitizer_verify_contiguous_container(beg, mid, end));
+    if (mid != beg)
+      assert(!__sanitizer_verify_contiguous_container(beg, mid - 1, end));
+    if (mid != end)
+      assert(!__sanitizer_verify_contiguous_container(beg, mid + 1, end));
+  }
+
+  // Don't forget to unpoison the whole thing before destroing/reallocating.
+  __sanitizer_annotate_contiguous_container(beg, end, mid, end);
+  for (size_t idx = 0; idx < capacity; idx++)
+    assert(!__asan_address_is_poisoned(beg + idx));
+  delete[] beg;
+}
+
+__attribute__((noinline))
+void Throw() { throw 1; }
+
+__attribute__((noinline))
+void ThrowAndCatch() {
+  try {
+    Throw();
+  } catch(...) {
+  }
+}
+
+void TestThrow() {
+  char x[32];
+  __sanitizer_annotate_contiguous_container(x, x + 32, x + 32, x + 14);
+  assert(!__asan_address_is_poisoned(x + 13));
+  assert(__asan_address_is_poisoned(x + 14));
+  ThrowAndCatch();
+  assert(!__asan_address_is_poisoned(x + 13));
+  // FIXME: invert the assertion below once we fix
+  // https://code.google.com/p/address-sanitizer/issues/detail?id=258
+  // This assertion works only w/o UAR.
+  if (!__asan_get_current_fake_stack())
+    assert(!__asan_address_is_poisoned(x + 14));
+  __sanitizer_annotate_contiguous_container(x, x + 32, x + 14, x + 32);
+  assert(!__asan_address_is_poisoned(x + 13));
+  assert(!__asan_address_is_poisoned(x + 14));
+}
+
+int main(int argc, char **argv) {
+  int n = argc == 1 ? 128 : atoi(argv[1]);
+  for (int i = 0; i <= n; i++)
+    TestContainer(i);
+  TestThrow();
+}