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9214a8e44d
While the empty one is more correct, {0} will also work, and will
likely silence diagnostics in old compiler versions.
Empty compound literals are only supported in GCC since commit
gcc.git 14cfa01755a6 (2022-08-25; "c: Support C2x empty initializer braces")
Reported-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
34 lines
782 B
C
34 lines
782 B
C
// SPDX-FileCopyrightText: 2022-2025, Alejandro Colomar <alx@kernel.org>
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// SPDX-License-Identifier: BSD-3-Clause
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#ifndef SHADOW_INCLUDE_LIBMISC_SIZEOF_H_
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#define SHADOW_INCLUDE_LIBMISC_SIZEOF_H_
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#include "config.h"
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#include <limits.h>
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#if __has_include(<stdcountof.h>)
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# include <stdcountof.h>
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#endif
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#include <sys/types.h>
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#define typeas(T) typeof((T){0})
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#define ssizeof(x) ({(ssize_t){sizeof(x)};})
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#define memberof(T, member) ((T){}.member)
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#define WIDTHOF(x) (sizeof(x) * CHAR_BIT)
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#if !defined(countof)
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# define countof(a) (sizeof(a) / sizeof((a)[0]))
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#endif
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// sizeof_a - sizeof array
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#define sizeof_a(a) (countof(a) * sizeof((a)[0]))
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#define STRLEN(s) (countof("" s "") - 1)
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#endif // include guard
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