96fcc6089e
GCC warns about a use after free, because a pointer is used in pointer comparison after it was freed. This particular case is completely safe, but GCC warns anyway. Move the free after the comparison requires me duplicating the free a couple of times, so instead I made use of the cleanup attribute to auto free the pointer when it goes out of scope. Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
131 lines
2.9 KiB
C
131 lines
2.9 KiB
C
// SPDX-License-Identifier: MPL-2.0
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// Copyright (c) 2018 Yuxuan Shui <yshuiv7@gmail.com>
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#pragma once
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#ifdef HAS_STDC_PREDEF_H
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#include <stdc-predef.h>
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#endif
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// clang-format off
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#define auto __auto_type
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define likely_if(x) if (likely(x))
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#define unlikely_if(x) if (unlikely(x))
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#ifndef __has_attribute
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# if __GNUC__ >= 4
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# define __has_attribute(x) 1
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# else
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# define __has_attribute(x) 0
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# endif
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#endif
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#if __has_attribute(const)
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# define attr_const __attribute__((const))
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#else
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# define attr_const
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#endif
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#if __has_attribute(format)
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# define attr_printf(a, b) __attribute__((format(printf, a, b)))
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#else
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# define attr_printf(a, b)
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#endif
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#if __has_attribute(pure)
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# define attr_pure __attribute__((pure))
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#else
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# define attr_pure
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#endif
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#if __has_attribute(unused)
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# define attr_unused __attribute__((unused))
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#else
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# define attr_unused
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#endif
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#if __has_attribute(warn_unused_result)
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# define attr_warn_unused_result __attribute__((warn_unused_result))
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#else
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# define attr_warn_unused_result
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#endif
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// An alias for conveninence
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#define must_use attr_warn_unused_result
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#if __has_attribute(nonnull)
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# define attr_nonnull(...) __attribute__((nonnull(__VA_ARGS__)))
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# define attr_nonnull_all __attribute__((nonnull))
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#else
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# define attr_nonnull(...)
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# define attr_nonnull_all
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#endif
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#if __has_attribute(returns_nonnull)
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# define attr_ret_nonnull __attribute__((returns_nonnull))
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#else
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# define attr_ret_nonnull
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#endif
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#if __has_attribute(deprecated)
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# define attr_deprecated __attribute__((deprecated))
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#else
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# define attr_deprecated
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#endif
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#if __has_attribute(malloc)
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# define attr_malloc __attribute__((malloc))
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#else
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# define attr_malloc
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#endif
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#if __has_attribute(fallthrough)
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# define fallthrough() __attribute__((fallthrough))
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#else
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# define fallthrough()
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#endif
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#if __has_attribute(cleanup)
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# define cleanup(func) __attribute__((cleanup(func)))
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#else
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# error "Compiler is missing cleanup attribute"
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#endif
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#if __STDC_VERSION__ >= 201112L
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# define attr_noret _Noreturn
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#else
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# if __has_attribute(noreturn)
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# define attr_noret __attribute__((noreturn))
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# else
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# define attr_noret
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# endif
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#endif
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#if defined(__GNUC__) || defined(__clang__)
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# define unreachable __builtin_unreachable()
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#else
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# define unreachable do {} while(0)
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#endif
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#ifndef __has_include
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# define __has_include(x) 0
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#endif
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#if !defined(__STDC_NO_THREADS__) && __has_include(<threads.h>)
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# include <threads.h>
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#elif __STDC_VERSION__ >= 201112L
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# define thread_local _Thread_local
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#elif defined(__GNUC__) || defined(__clang__)
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# define thread_local __thread
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#else
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# define thread_local _Pragma("GCC error \"No thread local storage support\"") __error__
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#endif
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// clang-format on
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typedef unsigned long ulong;
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typedef unsigned int uint;
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static inline int attr_const popcntul(unsigned long a) {
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return __builtin_popcountl(a);
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}
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