Add and use STATIC_ASSERT for compile-time asserts, and remove some 32-bit limits.

This started with the question "are the fields in struct statfs really 64-bit?",
but grew a bit. I'll need ftruncate64 in bionic before we can kill
offsetTooLarge completely.

Change-Id: Ia1dcda49e2c93c3cb0f9efe61a70c667c1415bee

1 files changed, 28 insertions, 0 deletions

diff --git a/include/StaticAssert.h b/include/StaticAssert.h
new file mode 100644
index 0000000..ab809b3
--- /dev/null
+++ b/include/StaticAssert.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2010 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 STATIC_ASSERT_H_included
+#define STATIC_ASSERT_H_included
+
+/**
+ * Similar to C++0x's static_assert. Message argument must be a valid identifier, not a string.
+ * Called COMPILE_ASSERT in Google, COMPILE_TIME_ASSERT in other places. This is the usual Google
+ * implementation.
+ */
+#define STATIC_ASSERT(exp, msg) typedef StaticAssert<(bool(exp))> msg[bool(exp) ? 1 : -1]
+template <bool> struct StaticAssert {};
+
+#endif  // STATIC_ASSERT_H_included