8f5608b614
<strings.h>'s ffs used to work by accident. In the past, <strings.h> used to incorrectly declare ffs for all platforms at all API levels. In the unified headers, there's no such declaration for x86 before API 18 (which makes sense, because that function was missing on x86 until then). But as long as there was a declaration for ffs, the compiler just inlined __builtin_ffs. There was no problem at link time because the compiler didn't actually add a reference to the missing ffs symbol. Restore the old behavior by manually instructing the compiler to inline its builtin in these cases. Bug: https://github.com/android-ndk/ndk/issues/439 Test: built new NDK 'ffs' test Change-Id: I840e99f237c86f7cb028a0f67aaa8c6ff3eda245
65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
/* $NetBSD: strings.h,v 1.10 2005/02/03 04:39:32 perry Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Klaus Klein.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _STRINGS_H_
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#define _STRINGS_H_
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#include <sys/types.h>
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#include <sys/cdefs.h>
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#include <xlocale.h>
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#include <bits/strcasecmp.h>
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__BEGIN_DECLS
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#if defined(__BIONIC_FORTIFY)
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#define bcopy(b1, b2, len) (void)(__builtin___memmove_chk((b2), (b1), (len), __bos0(b2)))
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#define bzero(b, len) (void)(__builtin___memset_chk((b), '\0', (len), __bos0(b)))
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#else
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#define bcopy(b1, b2, len) (void)(__builtin_memmove((b2), (b1), (len)))
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#define bzero(b, len) (void)(__builtin_memset((b), '\0', (len)))
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#endif
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#if !defined(__i386__) || __ANDROID_API__ >= __ANDROID_API_J_MR2__
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int ffs(int) __INTRODUCED_IN_X86(18);
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#endif
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__END_DECLS
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#include <android/legacy_strings_inlines.h>
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#endif /* !defined(_STRINGS_H_) */
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