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f439716b75
Use standardized offsetof() macro from stddef. Helps to build valid code with latest gcc10 with -O2.
26 lines
855 B
C
26 lines
855 B
C
// Copyright (C) 2018 - 2020 Red Hat, Inc. All rights reserved.
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//
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// This file is part of LVM2.
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//
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// This copyrighted material is made available to anyone wishing to use,
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// modify, copy, or redistribute it subject to the terms and conditions
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// of the GNU Lesser General Public License v.2.1.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef BASE_MEMORY_CONTAINER_OF_H
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#define BASE_MEMORY_CONTAINER_OF_H
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#include <stddef.h> // offsetof
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//----------------------------------------------------------------
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#define container_of(v, t, head) \
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((t *)((const char *)(v) - offsetof(t, head)))
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//----------------------------------------------------------------
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#endif
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