blob: f095cafe5e0bced60687feb03a58a41d85b1097b [file] [log] [blame]
Job Henandez Lara33bdb532024-11-01 21:49:57 -07001//===-- Including stdlib.h in overlay mode --------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_LIBC_HDR_STDLIB_OVERLAY_H
10#define LLVM_LIBC_HDR_STDLIB_OVERLAY_H
11
12#ifdef LIBC_FULL_BUILD
13#error "This header should only be included in overlay mode"
14#endif
15
16// Overlay mode
17
18// glibc <stdlib.h> header might provide extern inline definitions for few
19// functions, causing external alias errors. They are guarded by
20// `__USE_FORTIFY_LEVEL`, which will be temporarily disabled.
21
22#ifdef __USE_FORTIFY_LEVEL
23#define LIBC_OLD_USE_FORTIFY_LEVEL __USE_FORTIFY_LEVEL
24#undef __USE_FORTIFY_LEVEL
25#define __USE_FORTIFY_LEVEL 0
26#endif
27
28#include <stdlib.h>
29
30#ifdef LIBC_OLD_USE_FORTIFY_LEVEL
31#undef __USE_FORTIFY_LEVEL
32#define __USE_FORTIFY_LEVEL LIBC_OLD_USE_FORTIFY_LEVEL
33#undef LIBC_OLD_USE_FORTIFY_LEVEL
34#endif
35
36#endif