43 lines
991 B
C
43 lines
991 B
C
// Copyright 2009 The RE2 Authors. All Rights Reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#ifndef UTIL_UTIL_H_
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#define UTIL_UTIL_H_
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#define arraysize(array) (sizeof(array)/sizeof((array)[0]))
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#ifndef ATTRIBUTE_NORETURN
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#if defined(__GNUC__)
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#define ATTRIBUTE_NORETURN __attribute__((noreturn))
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#elif defined(_MSC_VER)
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#define ATTRIBUTE_NORETURN __declspec(noreturn)
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#else
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#define ATTRIBUTE_NORETURN
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#endif
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#endif
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#ifndef ATTRIBUTE_UNUSED
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#if defined(__GNUC__)
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#define ATTRIBUTE_UNUSED __attribute__((unused))
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#else
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#define ATTRIBUTE_UNUSED
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#endif
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#endif
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#ifndef FALLTHROUGH_INTENDED
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#if defined(__clang__)
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#define FALLTHROUGH_INTENDED [[clang::fallthrough]]
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#elif defined(__GNUC__) && __GNUC__ >= 7
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#define FALLTHROUGH_INTENDED [[gnu::fallthrough]]
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#else
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#define FALLTHROUGH_INTENDED do {} while (0)
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#endif
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#endif
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#ifndef NO_THREAD_SAFETY_ANALYSIS
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#define NO_THREAD_SAFETY_ANALYSIS
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#endif
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#endif // UTIL_UTIL_H_
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