libc/src/assert/assert.h

   1 // NOLINT(llvm-header-guard) https://github.com/llvm/llvm-project/issues/83339
   2 //===-- Internal header for assert ------------------------------*- C++ -*-===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "src/assert/__assert_fail.h"
  11
  12 // There is no header guard here since assert is intended to be capable of being
  13 // included multiple times with NDEBUG defined differently, causing different
  14 // behavior.
  15
  16 #undef assert
  17
  18 #ifdef NDEBUG
  19 #define assert(e) (void)0
  20 #else
  21
  22 #ifdef __has_builtin
  23 #if __has_builtin(__builtin_expect)
  24 #define __LIBC_ASSERT_LIKELY(e) __builtin_expect(e, 1)
  25 #endif
  26 #endif
  27 #ifndef __LIBC_ASSERT_LIKELY
  28 #define __LIBC_ASSERT_LIKELY(e) e
  29 #endif
  30
  31 #define assert(e)                                                              \
  32   (__LIBC_ASSERT_LIKELY(e) ? (void)0                                           \
  33                            : LIBC_NAMESPACE::__assert_fail(                    \
  34                                  #e, __FILE__, __LINE__, __PRETTY_FUNCTION__))
  35 #endif // NDEBUG