CoCalc -- errno_test.c

GitHub Repository: freebsd/freebsd-src
Path: blob/main/lib/csu/tests/errno/errno_test.c
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/*-
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 * SPDX-License-Identifier: BSD-2-Clause
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 *
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 * Copyright (c) 2025 Mark Johnston <[email protected]>
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 */
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#include <errno.h>
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#include <stdlib.h>
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static void __attribute__((constructor))
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f(void)
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{
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	errno = 42;
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}
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int
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main(void)
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{
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	/* errno must be zero upon program startup. */
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	if (errno != 0)
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		exit(1);
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	exit(0);
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}
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