Fix CFI initialization crash on x86.

Third try.

Bug: 34752378
Test: bionic tests
Change-Id: I247c127489a8ee38404e104f28d916a704e35f36
diff --git a/tests/libs/libs_utils.h b/tests/libs/libs_utils.h
new file mode 100644
index 0000000..f11cbe7
--- /dev/null
+++ b/tests/libs/libs_utils.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef LIBS_UTILS_H
+#define LIBS_UTILS_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define CHECK(x)                                                            \
+  do {                                                                      \
+    fprintf(stderr, "CHECK(" #x ") failed at %s:%d\n", __FILE__, __LINE__); \
+    if (!(x)) abort();                                                      \
+  } while (0)
+
+#endif  // LIBS_UTILS_H