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Andrew Cooper
e1b7eb92d3
xen-tools/libs.h currently contains a shared BUILD_BUG_ON() implementation and is used by some tools. Extend this to include ARRAY_SIZE and clean up all the opencoding. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Jan Beulich <jbeulich@suse.com>
17 lines
387 B
C
17 lines
387 B
C
#ifndef __XEN_TOOLS_LIBS__
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#define __XEN_TOOLS_LIBS__
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#ifndef BUILD_BUG_ON
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#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
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#define BUILD_BUG_ON(p) ({ _Static_assert(!(p), "!(" #p ")"); })
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#else
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#define BUILD_BUG_ON(p) ((void)sizeof(char[1 - 2 * !!(p)]))
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#endif
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#endif
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*a))
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#endif
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#endif /* __XEN_TOOLS_LIBS__ */
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