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[lttng-modules.git] / lib / bug.h
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1/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
2 *
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3 * lib/bug.h
4 *
886d51a3 5 * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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6 */
7
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8#ifndef _LTTNG_BUG_H
9#define _LTTNG_BUG_H
10
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11/**
12 * BUILD_RUNTIME_BUG_ON - check condition at build (if constant) or runtime
13 * @condition: the condition which should be false.
14 *
15 * If the condition is a constant and true, the compiler will generate a build
16 * error. If the condition is not constant, a BUG will be triggered at runtime
17 * if the condition is ever true. If the condition is constant and false, no
18 * code is emitted.
19 */
20#define BUILD_RUNTIME_BUG_ON(condition) \
21 do { \
22 if (__builtin_constant_p(condition)) \
a0b158b1 23 BUILD_BUG_ON(condition); \
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24 else \
25 BUG_ON(condition); \
26 } while (0)
27
28#endif
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