lighttpd 1.4.x https://www.lighttpd.net/
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#ifndef LI_FIRST_H
#define LI_FIRST_H
#ifdef HAVE_CONFIG_H
# include "config.h"
#else
# ifndef _GNU_SOURCE
# define _GNU_SOURCE
# endif
#endif
#ifndef __STDC_WANT_LIB_EXT1__
#define __STDC_WANT_LIB_EXT1__ 1
#endif
#ifdef __COVERITY__
#define _Float128 long double
#define _Float64x long double
#define _Float64 double
#define _Float32x double
#define _Float32 float
#endif
#include <sys/types.h>
#include <stddef.h>
#if defined HAVE_STDINT_H
# include <stdint.h>
#elif defined HAVE_INTTYPES_H
# include <inttypes.h>
#endif
/* solaris and NetBSD 1.3.x again */
#if (!defined(HAVE_STDINT_H)) && (!defined(HAVE_INTTYPES_H)) && (!defined(uint32_t))
# define uint32_t u_int32_t
#endif
#include <limits.h>
#ifndef SIZE_MAX
# ifdef SIZE_T_MAX
# define SIZE_MAX SIZE_T_MAX
# else
# define SIZE_MAX (~(size_t)0u)
# endif
#endif
#ifndef SSIZE_MAX
# define SSIZE_MAX ((ssize_t)(SIZE_MAX >> 1))
#endif
#define UNUSED(x) ( (void)(x) )
#ifndef __has_attribute /* clang */
#define __has_attribute(x) 0
#endif
#ifdef __GNUC__
#ifndef __GNUC_PREREQ
# ifdef __GNUC_PREREQ__
# define __GNUC_PREREQ __GNUC_PREREQ__
# elif defined __GNUC__ && defined __GNUC_MINOR__
# define __GNUC_PREREQ(maj, min) \
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
# else
# define __GNUC_PREREQ(maj, min) 0
# endif
#endif
#else
#define __GNUC_PREREQ(maj,min) 0
#endif
#ifndef __attribute_noinline__
#if __has_attribute(noinline) \
|| __GNUC_PREREQ(3,1)
#define __attribute_noinline__ __attribute__((__noinline__))
#else
#define __attribute_noinline__
#endif
#endif
#ifndef __attribute_cold__
#if __has_attribute(cold) \
|| __GNUC_PREREQ(4,3)
#define __attribute_cold__ __attribute__((__cold__))
#else
#define __attribute_cold__
#endif
#endif
#ifndef __attribute_hot__
#if __has_attribute(hot) \
|| __GNUC_PREREQ(4,3)
#define __attribute_hot__ __attribute__((__hot__))
#else
#define __attribute_hot__
#endif
#endif
#ifndef __attribute_noreturn__
#if __has_attribute(noreturn) \
|| __GNUC_PREREQ(2,5)
#define __attribute_noreturn__ __attribute__((__noreturn__))
#else
#define __attribute_noreturn__
#endif
#endif
#ifndef __attribute_fallthrough__
#if __has_attribute(fallthrough) \
|| __GNUC_PREREQ(7,0)
#define __attribute_fallthrough__ __attribute__((__fallthrough__));
#else
#define __attribute_fallthrough__ /* fall through */
#endif
#endif
#ifndef __attribute_format__
#if __has_attribute(format) \
|| __GNUC_PREREQ(2,95) /*(maybe earlier gcc, too)*/
#define __attribute_format__(x) __attribute__((__format__ x))
#else
#define __attribute_format__(x)
#endif
#endif
#endif