35 lines
782 B
C
35 lines
782 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef TYPECHECK_H_INCLUDED
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#define TYPECHECK_H_INCLUDED
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/*
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* Check at compile time that something is of a particular type.
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* Always evaluates to 1 so you may use it easily in comparisons.
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*/
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#define typecheck(type,x) \
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({ type __dummy; \
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typeof(x) __dummy2; \
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(void)(&__dummy == &__dummy2); \
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1; \
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})
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/*
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* Check at compile time that 'function' is a certain type, or is a pointer
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* to that type (needs to use typedef for the function type.)
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*/
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#define typecheck_fn(type,function) \
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({ typeof(type) __tmp = function; \
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(void)__tmp; \
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})
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/*
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* Check at compile time that something is a pointer type.
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*/
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#define typecheck_pointer(x) \
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({ typeof(x) __dummy; \
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(void)sizeof(*__dummy); \
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1; \
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})
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#endif /* TYPECHECK_H_INCLUDED */
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