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[Bug c/16523] New: with -O3 and -fPIC .5 * (2. + 2.5) = 2.60354e-38 instead of 2.25
- From: "fabrice dot salvaire at desy dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 13 Jul 2004 16:47:00 -0000
- Subject: [Bug c/16523] New: with -O3 and -fPIC .5 * (2. + 2.5) = 2.60354e-38 instead of 2.25
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
I have in my code the simple following function:
double
compute_middle_range (double x_min, double x_max)
{
double m = .5 * (x_max + x_min);
//cout << x_min << " " << x_max << " " << m << endl;
return m;
}
It's a shared library, so I use -fPIC
When I compile with -O3 without cout
I obtain with theses parameters
2 2.5 = 2.60354e-38
4.5 5 = 5.49635e-38
instead of (with -O2, or -O3 and cout)
2 2.5 = 2.25
4.5 5 = 4.75
Reproduction and Log from GCC:
#include "stdlib.h"
#include "stdio.h"
//#include <iostream>
//using namespace std;
double
compute_middle_range (double x_min, double x_max)
{
double m = .5 * (x_max + x_min);
//cout << x_min << " " << x_max << " " << m << endl;
return m;
}
int
main ()
{
double lower_range_x_min = 2.0;
double lower_range_x_max = 2.5;
double x0 = compute_middle_range (lower_range_x_min, lower_range_x_max);
printf ("%g\n", x0);
exit (0);
}
------------------------------------------------------------------------------
>cat test.ii
# 1 "test.c"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "test.c"
# 1 "/usr/include/stdlib.h" 1 3 4
# 25 "/usr/include/stdlib.h" 3 4
# 1 "/usr/include/features.h" 1 3 4
# 283 "/usr/include/features.h" 3 4
# 1 "/usr/include/sys/cdefs.h" 1 3 4
# 284 "/usr/include/features.h" 2 3 4
# 311 "/usr/include/features.h" 3 4
# 1 "/usr/include/gnu/stubs.h" 1 3 4
# 312 "/usr/include/features.h" 2 3 4
# 26 "/usr/include/stdlib.h" 2 3 4
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
1 3 4 # 213
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
3 4 typedef unsigned int size_t;
# 34 "/usr/include/stdlib.h" 2 3 4
extern "C" {
# 1 "/usr/include/bits/waitflags.h" 1 3 4
# 43 "/usr/include/stdlib.h" 2 3 4
# 1 "/usr/include/bits/waitstatus.h" 1 3 4
# 63 "/usr/include/bits/waitstatus.h" 3 4
# 1 "/usr/include/endian.h" 1 3 4
# 37 "/usr/include/endian.h" 3 4
# 1 "/usr/include/bits/endian.h" 1 3 4
# 38 "/usr/include/endian.h" 2 3 4
# 64 "/usr/include/bits/waitstatus.h" 2 3 4
union wait
{
int w_status;
struct
{
unsigned int __w_termsig:7;
unsigned int __w_coredump:1;
unsigned int __w_retcode:8;
unsigned int:16;
} __wait_terminated;
struct
{
unsigned int __w_stopval:8;
unsigned int __w_stopsig:8;
unsigned int:16;
} __wait_stopped;
};
# 44 "/usr/include/stdlib.h" 2 3 4
# 94 "/usr/include/stdlib.h" 3 4
typedef struct
{
int quot;
int rem;
} div_t;
typedef struct
{
long int quot;
long int rem;
} ldiv_t;
__extension__ typedef struct
{
long long int quot;
long long int rem;
} lldiv_t;
# 133 "/usr/include/stdlib.h" 3 4
extern size_t __ctype_get_mb_cur_max (void) throw ();
extern double atof (__const char *__nptr) throw () __attribute__ ((__pure__));
extern int atoi (__const char *__nptr) throw () __attribute__ ((__pure__));
extern long int atol (__const char *__nptr) throw () __attribute__ ((__pure__));
__extension__ extern long long int atoll (__const char *__nptr)
throw () __attribute__ ((__pure__));
extern double strtod (__const char *__restrict __nptr,
char **__restrict __endptr) throw ();
extern float strtof (__const char *__restrict __nptr,
char **__restrict __endptr) throw ();
extern long double strtold (__const char *__restrict __nptr,
char **__restrict __endptr) throw ();
extern long int strtol (__const char *__restrict __nptr,
char **__restrict __endptr, int __base) throw ();
extern unsigned long int strtoul (__const char *__restrict __nptr,
char **__restrict __endptr, int __base)
throw ();
__extension__
extern long long int strtoq (__const char *__restrict __nptr,
char **__restrict __endptr, int __base) throw ();
__extension__
extern unsigned long long int strtouq (__const char *__restrict __nptr,
char **__restrict __endptr, int __base)
throw ();
__extension__
extern long long int strtoll (__const char *__restrict __nptr,
char **__restrict __endptr, int __base) throw ();
__extension__
extern unsigned long long int strtoull (__const char *__restrict __nptr,
char **__restrict __endptr, int __base)
throw ();
# 211 "/usr/include/stdlib.h" 3 4
# 1 "/usr/include/xlocale.h" 1 3 4
# 28 "/usr/include/xlocale.h" 3 4
typedef struct __locale_struct
{
struct locale_data *__locales[13];
const unsigned short int *__ctype_b;
const int *__ctype_tolower;
const int *__ctype_toupper;
} *__locale_t;
# 212 "/usr/include/stdlib.h" 2 3 4
extern long int __strtol_l (__const char *__restrict __nptr,
char **__restrict __endptr, int __base,
__locale_t __loc) throw ();
extern unsigned long int __strtoul_l (__const char *__restrict __nptr,
char **__restrict __endptr,
int __base, __locale_t __loc) throw ();
__extension__
extern long long int __strtoll_l (__const char *__restrict __nptr,
char **__restrict __endptr, int __base,
__locale_t __loc) throw ();
__extension__
extern unsigned long long int __strtoull_l (__const char *__restrict __nptr,
char **__restrict __endptr,
int __base, __locale_t __loc)
throw ();
extern double __strtod_l (__const char *__restrict __nptr,
char **__restrict __endptr, __locale_t __loc)
throw ();
extern float __strtof_l (__const char *__restrict __nptr,
char **__restrict __endptr, __locale_t __loc) throw ();
extern long double __strtold_l (__const char *__restrict __nptr,
char **__restrict __endptr,
__locale_t __loc) throw ();
extern double __strtod_internal (__const char *__restrict __nptr,
char **__restrict __endptr, int __group)
throw ();
extern float __strtof_internal (__const char *__restrict __nptr,
char **__restrict __endptr, int __group)
throw ();
extern long double __strtold_internal (__const char *__restrict __nptr,
char **__restrict __endptr,
int __group) throw ();
extern long int __strtol_internal (__const char *__restrict __nptr,
char **__restrict __endptr,
int __base, int __group) throw ();
extern unsigned long int __strtoul_internal (__const char *__restrict __nptr,
char **__restrict __endptr,
int __base, int __group) throw ();
__extension__
extern long long int __strtoll_internal (__const char *__restrict __nptr,
char **__restrict __endptr,
int __base, int __group) throw ();
__extension__
extern unsigned long long int __strtoull_internal (__const char *
__restrict __nptr,
char **__restrict __endptr,
int __base, int __group)
throw ();
# 294 "/usr/include/stdlib.h" 3 4
extern __inline double
strtod (__const char *__restrict __nptr, char **__restrict __endptr) throw ()
{
return __strtod_internal (__nptr, __endptr, 0);
}
extern __inline long int
strtol (__const char *__restrict __nptr, char **__restrict __endptr,
int __base) throw ()
{
return __strtol_internal (__nptr, __endptr, __base, 0);
}
extern __inline unsigned long int
strtoul (__const char *__restrict __nptr, char **__restrict __endptr,
int __base) throw ()
{
return __strtoul_internal (__nptr, __endptr, __base, 0);
}
extern __inline float
strtof (__const char *__restrict __nptr, char **__restrict __endptr) throw ()
{
return __strtof_internal (__nptr, __endptr, 0);
}
extern __inline long double
strtold (__const char *__restrict __nptr, char **__restrict __endptr) throw ()
{
return __strtold_internal (__nptr, __endptr, 0);
}
__extension__ extern __inline long long int
strtoq (__const char *__restrict __nptr, char **__restrict __endptr,
int __base) throw ()
{
return __strtoll_internal (__nptr, __endptr, __base, 0);
}
__extension__ extern __inline unsigned long long int
strtouq (__const char *__restrict __nptr, char **__restrict __endptr,
int __base) throw ()
{
return __strtoull_internal (__nptr, __endptr, __base, 0);
}
__extension__ extern __inline long long int
strtoll (__const char *__restrict __nptr, char **__restrict __endptr,
int __base) throw ()
{
return __strtoll_internal (__nptr, __endptr, __base, 0);
}
__extension__ extern __inline unsigned long long int
strtoull (__const char * __restrict __nptr, char **__restrict __endptr,
int __base) throw ()
{
return __strtoull_internal (__nptr, __endptr, __base, 0);
}
extern __inline double
atof (__const char *__nptr) throw ()
{
return strtod (__nptr, (char **) __null);
}
extern __inline int
atoi (__const char *__nptr) throw ()
{
return (int) strtol (__nptr, (char **) __null, 10);
}
extern __inline long int
atol (__const char *__nptr) throw ()
{
return strtol (__nptr, (char **) __null, 10);
}
__extension__ extern __inline long long int
atoll (__const char *__nptr) throw ()
{
return strtoll (__nptr, (char **) __null, 10);
}
# 385 "/usr/include/stdlib.h" 3 4
extern char *l64a (long int __n) throw ();
extern long int a64l (__const char *__s) throw () __attribute__ ((__pure__));
# 1 "/usr/include/sys/types.h" 1 3 4
# 28 "/usr/include/sys/types.h" 3 4
extern "C" {
# 1 "/usr/include/bits/types.h" 1 3 4
# 29 "/usr/include/bits/types.h" 3 4
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
1 3 4 # 30 "/usr/include/bits/types.h" 2 3 4
typedef unsigned char __u_char;
typedef unsigned short __u_short;
typedef unsigned int __u_int;
typedef unsigned long __u_long;
__extension__ typedef unsigned long long int __u_quad_t;
__extension__ typedef long long int __quad_t;
# 49 "/usr/include/bits/types.h" 3 4
typedef signed char __int8_t;
typedef unsigned char __uint8_t;
typedef signed short int __int16_t;
typedef unsigned short int __uint16_t;
typedef signed int __int32_t;
typedef unsigned int __uint32_t;
__extension__ typedef signed long long int __int64_t;
__extension__ typedef unsigned long long int __uint64_t;
typedef __quad_t *__qaddr_t;
typedef __u_quad_t __dev_t;
typedef __u_int __uid_t;
typedef __u_int __gid_t;
typedef __u_long __ino_t;
typedef __u_int __mode_t;
typedef __u_int __nlink_t;
typedef long int __off_t;
typedef __quad_t __loff_t;
typedef int __pid_t;
typedef int __ssize_t;
typedef __u_long __rlim_t;
typedef __u_quad_t __rlim64_t;
typedef __u_int __id_t;
typedef struct
{
int __val[2];
} __fsid_t;
typedef int __daddr_t;
typedef char *__caddr_t;
typedef long int __time_t;
typedef unsigned int __useconds_t;
typedef long int __suseconds_t;
typedef long int __swblk_t;
typedef long int __clock_t;
typedef int __clockid_t;
typedef int __timer_t;
typedef int __key_t;
typedef unsigned short int __ipc_pid_t;
typedef long int __blksize_t;
typedef long int __blkcnt_t;
typedef __quad_t __blkcnt64_t;
typedef __u_long __fsblkcnt_t;
typedef __u_quad_t __fsblkcnt64_t;
typedef __u_long __fsfilcnt_t;
typedef __u_quad_t __fsfilcnt64_t;
typedef __u_quad_t __ino64_t;
typedef __loff_t __off64_t;
typedef long int __t_scalar_t;
typedef unsigned long int __t_uscalar_t;
typedef int __intptr_t;
typedef unsigned int __socklen_t;
# 1 "/usr/include/bits/pthreadtypes.h" 1 3 4
# 23 "/usr/include/bits/pthreadtypes.h" 3 4
# 1 "/usr/include/bits/sched.h" 1 3 4
# 68 "/usr/include/bits/sched.h" 3 4
struct __sched_param
{
int __sched_priority;
};
# 24 "/usr/include/bits/pthreadtypes.h" 2 3 4
struct _pthread_fastlock
{
long int __status;
int __spinlock;
};
typedef struct _pthread_descr_struct *_pthread_descr;
typedef struct __pthread_attr_s
{
int __detachstate;
int __schedpolicy;
struct __sched_param __schedparam;
int __inheritsched;
int __scope;
size_t __guardsize;
int __stackaddr_set;
void *__stackaddr;
size_t __stacksize;
} pthread_attr_t;
typedef struct
{
struct _pthread_fastlock __c_lock;
_pthread_descr __c_waiting;
} pthread_cond_t;
typedef struct
{
int __dummy;
} pthread_condattr_t;
typedef unsigned int pthread_key_t;
typedef struct
{
int __m_reserved;
int __m_count;
_pthread_descr __m_owner;
int __m_kind;
struct _pthread_fastlock __m_lock;
} pthread_mutex_t;
typedef struct
{
int __mutexkind;
} pthread_mutexattr_t;
typedef int pthread_once_t;
typedef struct _pthread_rwlock_t
{
struct _pthread_fastlock __rw_lock;
int __rw_readers;
_pthread_descr __rw_writer;
_pthread_descr __rw_read_waiting;
_pthread_descr __rw_write_waiting;
int __rw_kind;
int __rw_pshared;
} pthread_rwlock_t;
typedef struct
{
int __lockkind;
int __pshared;
} pthread_rwlockattr_t;
typedef volatile int pthread_spinlock_t;
typedef struct {
struct _pthread_fastlock __ba_lock;
int __ba_required;
int __ba_present;
_pthread_descr __ba_waiting;
} pthread_barrier_t;
typedef struct {
int __pshared;
} pthread_barrierattr_t;
typedef unsigned long int pthread_t;
# 144 "/usr/include/bits/types.h" 2 3 4
# 31 "/usr/include/sys/types.h" 2 3 4
typedef __u_char u_char;
typedef __u_short u_short;
typedef __u_int u_int;
typedef __u_long u_long;
typedef __quad_t quad_t;
typedef __u_quad_t u_quad_t;
typedef __fsid_t fsid_t;
typedef __loff_t loff_t;
typedef __ino_t ino_t;
typedef __ino64_t ino64_t;
typedef __dev_t dev_t;
typedef __gid_t gid_t;
typedef __mode_t mode_t;
typedef __nlink_t nlink_t;
typedef __uid_t uid_t;
typedef __off_t off_t;
typedef __off64_t off64_t;
typedef __pid_t pid_t;
typedef __id_t id_t;
typedef __ssize_t ssize_t;
typedef __daddr_t daddr_t;
typedef __caddr_t caddr_t;
typedef __key_t key_t;
# 126 "/usr/include/sys/types.h" 3 4
# 1 "/usr/include/time.h" 1 3 4
# 59 "/usr/include/time.h" 3 4
typedef __clock_t clock_t;
# 70 "/usr/include/time.h" 3 4
typedef __time_t time_t;
# 82 "/usr/include/time.h" 3 4
typedef __clockid_t clockid_t;
# 94 "/usr/include/time.h" 3 4
typedef __timer_t timer_t;
# 127 "/usr/include/sys/types.h" 2 3 4
typedef __useconds_t useconds_t;
typedef __suseconds_t suseconds_t;
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
1 3 4 # 141 "/usr/include/sys/types.h" 2 3 4
typedef unsigned long int ulong;
typedef unsigned short int ushort;
typedef unsigned int uint;
# 184 "/usr/include/sys/types.h" 3 4
typedef int int8_t __attribute__ ((__mode__ (__QI__)));
typedef int int16_t __attribute__ ((__mode__ (__HI__)));
typedef int int32_t __attribute__ ((__mode__ (__SI__)));
typedef int int64_t __attribute__ ((__mode__ (__DI__)));
typedef unsigned int u_int8_t __attribute__ ((__mode__ (__QI__)));
typedef unsigned int u_int16_t __attribute__ ((__mode__ (__HI__)));
typedef unsigned int u_int32_t __attribute__ ((__mode__ (__SI__)));
typedef unsigned int u_int64_t __attribute__ ((__mode__ (__DI__)));
typedef int register_t __attribute__ ((__mode__ (__word__)));
# 209 "/usr/include/sys/types.h" 3 4
# 1 "/usr/include/sys/select.h" 1 3 4
# 31 "/usr/include/sys/select.h" 3 4
# 1 "/usr/include/bits/select.h" 1 3 4
# 32 "/usr/include/sys/select.h" 2 3 4
# 1 "/usr/include/bits/sigset.h" 1 3 4
# 23 "/usr/include/bits/sigset.h" 3 4
typedef int __sig_atomic_t;
typedef struct
{
unsigned long int __val[(1024 / (8 * sizeof (unsigned long int)))];
} __sigset_t;
# 35 "/usr/include/sys/select.h" 2 3 4
typedef __sigset_t sigset_t;
# 1 "/usr/include/time.h" 1 3 4
# 106 "/usr/include/time.h" 3 4
struct timespec
{
long int tv_sec;
long int tv_nsec;
};
# 44 "/usr/include/sys/select.h" 2 3 4
# 1 "/usr/include/bits/time.h" 1 3 4
# 67 "/usr/include/bits/time.h" 3 4
struct timeval
{
__time_t tv_sec;
__suseconds_t tv_usec;
};
# 46 "/usr/include/sys/select.h" 2 3 4
typedef long int __fd_mask;
typedef struct
{
__fd_mask fds_bits[1024 / (8 * sizeof (__fd_mask))];
} fd_set;
typedef __fd_mask fd_mask;
# 89 "/usr/include/sys/select.h" 3 4
extern "C" {
extern int select (int __nfds, fd_set *__restrict __readfds,
fd_set *__restrict __writefds,
fd_set *__restrict __exceptfds,
struct timeval *__restrict __timeout) throw ();
extern int pselect (int __nfds, fd_set *__restrict __readfds,
fd_set *__restrict __writefds,
fd_set *__restrict __exceptfds,
const struct timespec *__restrict __timeout,
const __sigset_t *__restrict __sigmask) throw ();
}
# 210 "/usr/include/sys/types.h" 2 3 4
# 1 "/usr/include/sys/sysmacros.h" 1 3 4
# 213 "/usr/include/sys/types.h" 2 3 4
typedef __blksize_t blksize_t;
typedef __blkcnt_t blkcnt_t;
typedef __fsblkcnt_t fsblkcnt_t;
typedef __fsfilcnt_t fsfilcnt_t;
# 251 "/usr/include/sys/types.h" 3 4
typedef __blkcnt64_t blkcnt64_t;
typedef __fsblkcnt64_t fsblkcnt64_t;
typedef __fsfilcnt64_t fsfilcnt64_t;
}
# 392 "/usr/include/stdlib.h" 2 3 4
extern long int random (void) throw ();
extern void srandom (unsigned int __seed) throw ();
extern char *initstate (unsigned int __seed, char *__statebuf,
size_t __statelen) throw ();
extern char *setstate (char *__statebuf) throw ();
struct random_data
{
int32_t *fptr;
int32_t *rptr;
int32_t *state;
int rand_type;
int rand_deg;
int rand_sep;
int32_t *end_ptr;
};
extern int random_r (struct random_data *__restrict __buf,
int32_t *__restrict __result) throw ();
extern int srandom_r (unsigned int __seed, struct random_data *__buf) throw ();
extern int initstate_r (unsigned int __seed, char *__restrict __statebuf,
size_t __statelen,
struct random_data *__restrict __buf) throw ();
extern int setstate_r (char *__restrict __statebuf,
struct random_data *__restrict __buf) throw ();
extern int rand (void) throw ();
extern void srand (unsigned int __seed) throw ();
extern int rand_r (unsigned int *__seed) throw ();
extern double drand48 (void) throw ();
extern double erand48 (unsigned short int __xsubi[3]) throw ();
extern long int lrand48 (void) throw ();
extern long int nrand48 (unsigned short int __xsubi[3]) throw ();
extern long int mrand48 (void) throw ();
extern long int jrand48 (unsigned short int __xsubi[3]) throw ();
extern void srand48 (long int __seedval) throw ();
extern unsigned short int *seed48 (unsigned short int __seed16v[3]) throw ();
extern void lcong48 (unsigned short int __param[7]) throw ();
struct drand48_data
{
unsigned short int __x[3];
unsigned short int __old_x[3];
unsigned short int __c;
unsigned short int __init;
unsigned long long int __a;
};
extern int drand48_r (struct drand48_data *__restrict __buffer,
double *__restrict __result) throw ();
extern int erand48_r (unsigned short int __xsubi[3],
struct drand48_data *__restrict __buffer,
double *__restrict __result) throw ();
extern int lrand48_r (struct drand48_data *__restrict __buffer,
long int *__restrict __result) throw ();
extern int nrand48_r (unsigned short int __xsubi[3],
struct drand48_data *__restrict __buffer,
long int *__restrict __result) throw ();
extern int mrand48_r (struct drand48_data *__restrict __buffer,
long int *__restrict __result) throw ();
extern int jrand48_r (unsigned short int __xsubi[3],
struct drand48_data *__restrict __buffer,
long int *__restrict __result) throw ();
extern int srand48_r (long int __seedval, struct drand48_data *__buffer)
throw ();
extern int seed48_r (unsigned short int __seed16v[3],
struct drand48_data *__buffer) throw ();
extern int lcong48_r (unsigned short int __param[7],
struct drand48_data *__buffer) throw ();
# 528 "/usr/include/stdlib.h" 3 4
extern void *malloc (size_t __size) throw () __attribute__ ((__malloc__));
extern void *calloc (size_t __nmemb, size_t __size)
throw () __attribute__ ((__malloc__));
extern void *realloc (void *__ptr, size_t __size) throw () __attribute__
((__malloc__));
extern void free (void *__ptr) throw ();
extern void cfree (void *__ptr) throw ();
# 1 "/usr/include/alloca.h" 1 3 4
# 25 "/usr/include/alloca.h" 3 4
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
1 3 4 # 26 "/usr/include/alloca.h" 2 3 4
extern "C" {
extern void *alloca (size_t __size) throw ();
}
# 548 "/usr/include/stdlib.h" 2 3 4
extern void *valloc (size_t __size) throw () __attribute__ ((__malloc__));
extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size)
throw () __attribute__ ((__malloc__));
extern void abort (void) throw () __attribute__ ((__noreturn__));
extern int atexit (void (*__func) (void)) throw ();
extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg)
throw ();
extern void exit (int __status) throw () __attribute__ ((__noreturn__));
extern void _Exit (int __status) throw () __attribute__ ((__noreturn__));
extern char *getenv (__const char *__name) throw ();
extern char *__secure_getenv (__const char *__name) throw ();
extern int putenv (char *__string) throw ();
extern int setenv (__const char *__name, __const char *__value, int __replace)
throw ();
extern int unsetenv (__const char *__name) throw ();
extern int clearenv (void) throw ();
# 624 "/usr/include/stdlib.h" 3 4
extern char *mktemp (char *__template) throw ();
extern int mkstemp (char *__template) throw ();
# 641 "/usr/include/stdlib.h" 3 4
extern int mkstemp64 (char *__template) throw ();
# 651 "/usr/include/stdlib.h" 3 4
extern char *mkdtemp (char *__template) throw ();
extern int system (__const char *__command) throw ();
extern char *canonicalize_file_name (__const char *__name) throw ();
# 673 "/usr/include/stdlib.h" 3 4
extern char *realpath (__const char *__restrict __name,
char *__restrict __resolved) throw ();
typedef int (*__compar_fn_t) (__const void *, __const void *);
typedef __compar_fn_t comparison_fn_t;
extern void *bsearch (__const void *__key, __const void *__base,
size_t __nmemb, size_t __size, __compar_fn_t __compar);
extern void qsort (void *__base, size_t __nmemb, size_t __size,
__compar_fn_t __compar);
extern int abs (int __x) throw () __attribute__ ((__const__));
extern long int labs (long int __x) throw () __attribute__ ((__const__));
__extension__ extern long long int llabs (long long int __x)
throw () __attribute__ ((__const__));
extern div_t div (int __numer, int __denom)
throw () __attribute__ ((__const__));
extern ldiv_t ldiv (long int __numer, long int __denom)
throw () __attribute__ ((__const__));
__extension__ extern lldiv_t lldiv (long long int __numer,
long long int __denom)
throw () __attribute__ ((__const__));
# 729 "/usr/include/stdlib.h" 3 4
extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt,
int *__restrict __sign) throw ();
extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt,
int *__restrict __sign) throw ();
extern char *gcvt (double __value, int __ndigit, char *__buf) throw ();
extern char *qecvt (long double __value, int __ndigit,
int *__restrict __decpt, int *__restrict __sign) throw ();
extern char *qfcvt (long double __value, int __ndigit,
int *__restrict __decpt, int *__restrict __sign) throw ();
extern char *qgcvt (long double __value, int __ndigit, char *__buf) throw ();
extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt,
int *__restrict __sign, char *__restrict __buf,
size_t __len) throw ();
extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt,
int *__restrict __sign, char *__restrict __buf,
size_t __len) throw ();
extern int qecvt_r (long double __value, int __ndigit,
int *__restrict __decpt, int *__restrict __sign,
char *__restrict __buf, size_t __len) throw ();
extern int qfcvt_r (long double __value, int __ndigit,
int *__restrict __decpt, int *__restrict __sign,
char *__restrict __buf, size_t __len) throw ();
extern int mblen (__const char *__s, size_t __n) throw ();
extern int mbtowc (wchar_t *__restrict __pwc,
__const char *__restrict __s, size_t __n) throw ();
extern int wctomb (char *__s, wchar_t __wchar) throw ();
extern size_t mbstowcs (wchar_t *__restrict __pwcs,
__const char *__restrict __s, size_t __n) throw ();
extern size_t wcstombs (char *__restrict __s,
__const wchar_t *__restrict __pwcs, size_t __n)
throw ();
extern int rpmatch (__const char *__response) throw ();
# 809 "/usr/include/stdlib.h" 3 4
extern int getsubopt (char **__restrict __optionp,
char *__const *__restrict __tokens,
char **__restrict __valuep) throw ();
extern void setkey (__const char *__key) throw ();
extern int posix_openpt (int __oflag) throw ();
extern int grantpt (int __fd) throw ();
extern int unlockpt (int __fd) throw ();
extern char *ptsname (int __fd) throw ();
extern int ptsname_r (int __fd, char *__buf, size_t __buflen) throw ();
extern int getpt (void) throw ();
extern int getloadavg (double __loadavg[], int __nelem) throw ();
}
# 2 "test.c" 2
# 1 "/usr/include/stdio.h" 1 3 4
# 29 "/usr/include/stdio.h" 3 4
extern "C" {
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
1 3 4 # 34 "/usr/include/stdio.h" 2 3 4
# 44 "/usr/include/stdio.h" 3 4
typedef struct _IO_FILE FILE;
# 54 "/usr/include/stdio.h" 3 4
typedef struct _IO_FILE __FILE;
# 64 "/usr/include/stdio.h" 3 4
# 1 "/usr/include/libio.h" 1 3 4
# 30 "/usr/include/libio.h" 3 4
# 1 "/usr/include/_G_config.h" 1 3 4
# 14 "/usr/include/_G_config.h" 3 4
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
1 3 4 # 354
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
3 4 typedef unsigned int wint_t;
# 15 "/usr/include/_G_config.h" 2 3 4
# 24 "/usr/include/_G_config.h" 3 4
# 1 "/usr/include/wchar.h" 1 3 4
# 48 "/usr/include/wchar.h" 3 4
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
1 3 4 # 49 "/usr/include/wchar.h" 2 3 4
# 1 "/usr/include/bits/wchar.h" 1 3 4
# 51 "/usr/include/wchar.h" 2 3 4
# 67 "/usr/include/wchar.h" 3 4
typedef struct
{
int __count;
union
{
wint_t __wch;
char __wchb[4];
} __value;
} __mbstate_t;
# 25 "/usr/include/_G_config.h" 2 3 4
typedef struct
{
__off_t __pos;
__mbstate_t __state;
} _G_fpos_t;
typedef struct
{
__off64_t __pos;
__mbstate_t __state;
} _G_fpos64_t;
# 44 "/usr/include/_G_config.h" 3 4
# 1 "/usr/include/gconv.h" 1 3 4
# 28 "/usr/include/gconv.h" 3 4
# 1 "/usr/include/wchar.h" 1 3 4
# 48 "/usr/include/wchar.h" 3 4
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
1 3 4 # 49 "/usr/include/wchar.h" 2 3 4
# 29 "/usr/include/gconv.h" 2 3 4
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stddef.h"
1 3 4 # 31 "/usr/include/gconv.h" 2 3 4
enum
{
__GCONV_OK = 0,
__GCONV_NOCONV,
__GCONV_NODB,
__GCONV_NOMEM,
__GCONV_EMPTY_INPUT,
__GCONV_FULL_OUTPUT,
__GCONV_ILLEGAL_INPUT,
__GCONV_INCOMPLETE_INPUT,
__GCONV_ILLEGAL_DESCRIPTOR,
__GCONV_INTERNAL_ERROR
};
enum
{
__GCONV_IS_LAST = 0x0001,
__GCONV_IGNORE_ERRORS = 0x0002
};
struct __gconv_step;
struct __gconv_step_data;
struct __gconv_loaded_object;
struct __gconv_trans_data;
typedef int (*__gconv_fct) (struct __gconv_step *, struct __gconv_step_data *,
__const unsigned char **, __const unsigned char *,
unsigned char **, size_t *, int, int);
typedef int (*__gconv_init_fct) (struct __gconv_step *);
typedef void (*__gconv_end_fct) (struct __gconv_step *);
typedef int (*__gconv_trans_fct) (struct __gconv_step *,
struct __gconv_step_data *, void *,
__const unsigned char *,
__const unsigned char **,
__const unsigned char *, unsigned char **,
size_t *);
typedef int (*__gconv_trans_context_fct) (void *, __const unsigned char *,
__const unsigned char *,
unsigned char *, unsigned char *);
typedef int (*__gconv_trans_query_fct) (__const char *, __const char ***,
size_t *);
typedef int (*__gconv_trans_init_fct) (void **, const char *);
typedef void (*__gconv_trans_end_fct) (void *);
struct __gconv_trans_data
{
__gconv_trans_fct __trans_fct;
__gconv_trans_context_fct __trans_context_fct;
__gconv_trans_end_fct __trans_end_fct;
void *__data;
struct __gconv_trans_data *__next;
};
struct __gconv_step
{
struct __gconv_loaded_object *__shlib_handle;
__const char *__modname;
int __counter;
char *__from_name;
char *__to_name;
__gconv_fct __fct;
__gconv_init_fct __init_fct;
__gconv_end_fct __end_fct;
int __min_needed_from;
int __max_needed_from;
int __min_needed_to;
int __max_needed_to;
int __stateful;
void *__data;
};
struct __gconv_step_data
{
unsigned char *__outbuf;
unsigned char *__outbufend;
int __flags;
int __invocation_counter;
int __internal_use;
__mbstate_t *__statep;
__mbstate_t __state;
struct __gconv_trans_data *__trans;
};
typedef struct __gconv_info
{
size_t __nsteps;
struct __gconv_step *__steps;
__extension__ struct __gconv_step_data __data [];
} *__gconv_t;
# 45 "/usr/include/_G_config.h" 2 3 4
typedef union
{
struct __gconv_info __cd;
struct
{
struct __gconv_info __cd;
struct __gconv_step_data __data;
} __combined;
} _G_iconv_t;
typedef int _G_int16_t __attribute__ ((__mode__ (__HI__)));
typedef int _G_int32_t __attribute__ ((__mode__ (__SI__)));
typedef unsigned int _G_uint16_t __attribute__ ((__mode__ (__HI__)));
typedef unsigned int _G_uint32_t __attribute__ ((__mode__ (__SI__)));
# 31 "/usr/include/libio.h" 2 3 4
# 51 "/usr/include/libio.h" 3 4
# 1
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stdarg.h"
1 3 4 # 43
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/stdarg.h"
3 4
typedef __builtin_va_list __gnuc_va_list;
# 52 "/usr/include/libio.h" 2 3 4
# 158 "/usr/include/libio.h" 3 4
struct _IO_jump_t; struct _IO_FILE;
# 168 "/usr/include/libio.h" 3 4
typedef void _IO_lock_t;
struct _IO_marker {
struct _IO_marker *_next;
struct _IO_FILE *_sbuf;
int _pos;
# 191 "/usr/include/libio.h" 3 4
};
enum __codecvt_result
{
__codecvt_ok,
__codecvt_partial,
__codecvt_error,
__codecvt_noconv
};
# 259 "/usr/include/libio.h" 3 4
struct _IO_FILE {
int _flags;
char* _IO_read_ptr;
char* _IO_read_end;
char* _IO_read_base;
char* _IO_write_base;
char* _IO_write_ptr;
char* _IO_write_end;
char* _IO_buf_base;
char* _IO_buf_end;
char *_IO_save_base;
char *_IO_backup_base;
char *_IO_save_end;
struct _IO_marker *_markers;
struct _IO_FILE *_chain;
int _fileno;
int _blksize;
__off_t _old_offset;
unsigned short _cur_column;
signed char _vtable_offset;
char _shortbuf[1];
_IO_lock_t *_lock;
# 303 "/usr/include/libio.h" 3 4
__off64_t _offset;
void *__pad1;
void *__pad2;
int _mode;
char _unused2[15 * sizeof (int) - 2 * sizeof (void *)];
};
struct _IO_FILE_plus;
extern struct _IO_FILE_plus _IO_2_1_stdin_;
extern struct _IO_FILE_plus _IO_2_1_stdout_;
extern struct _IO_FILE_plus _IO_2_1_stderr_;
# 342 "/usr/include/libio.h" 3 4
typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes);
typedef __ssize_t __io_write_fn (void *__cookie, __const char *__buf,
size_t __n);
typedef int __io_seek_fn (void *__cookie, __off64_t *__pos, int __w);
typedef int __io_close_fn (void *__cookie);
typedef __io_read_fn cookie_read_function_t;
typedef __io_write_fn cookie_write_function_t;
typedef __io_seek_fn cookie_seek_function_t;
typedef __io_close_fn cookie_close_function_t;
typedef struct
{
__io_read_fn *read;
__io_write_fn *write;
__io_seek_fn *seek;
__io_close_fn *close;
} _IO_cookie_io_functions_t;
typedef _IO_cookie_io_functions_t cookie_io_functions_t;
struct _IO_cookie_file;
extern void _IO_cookie_init (struct _IO_cookie_file *__cfile, int __read_write,
void *__cookie, _IO_cookie_io_functions_t __fns);
extern "C" {
extern int __underflow (_IO_FILE *) throw ();
extern int __uflow (_IO_FILE *) throw ();
extern int __overflow (_IO_FILE *, int) throw ();
extern wint_t __wunderflow (_IO_FILE *) throw ();
extern wint_t __wuflow (_IO_FILE *) throw ();
extern wint_t __woverflow (_IO_FILE *, wint_t) throw ();
# 424 "/usr/include/libio.h" 3 4
extern int _IO_getc (_IO_FILE *__fp) throw ();
extern int _IO_putc (int __c, _IO_FILE *__fp) throw ();
extern int _IO_feof (_IO_FILE *__fp) throw ();
extern int _IO_ferror (_IO_FILE *__fp) throw ();
extern int _IO_peekc_locked (_IO_FILE *__fp) throw ();
extern void _IO_flockfile (_IO_FILE *) throw ();
extern void _IO_funlockfile (_IO_FILE *) throw ();
extern int _IO_ftrylockfile (_IO_FILE *) throw ();
# 454 "/usr/include/libio.h" 3 4
extern int _IO_vfscanf (_IO_FILE * __restrict, const char * __restrict,
__gnuc_va_list, int *__restrict) throw ();
extern int _IO_vfprintf (_IO_FILE *__restrict, const char *__restrict,
__gnuc_va_list) throw ();
extern __ssize_t _IO_padn (_IO_FILE *, int, __ssize_t) throw ();
extern size_t _IO_sgetn (_IO_FILE *, void *, size_t) throw ();
extern __off64_t _IO_seekoff (_IO_FILE *, __off64_t, int, int) throw ();
extern __off64_t _IO_seekpos (_IO_FILE *, __off64_t, int) throw ();
extern void _IO_free_backup_area (_IO_FILE *) throw ();
# 510 "/usr/include/libio.h" 3 4
}
# 65 "/usr/include/stdio.h" 2 3 4
typedef __gnuc_va_list va_list;
# 79 "/usr/include/stdio.h" 3 4
typedef _G_fpos_t fpos_t;
typedef _G_fpos64_t fpos64_t;
# 128 "/usr/include/stdio.h" 3 4
# 1 "/usr/include/bits/stdio_lim.h" 1 3 4
# 129 "/usr/include/stdio.h" 2 3 4
extern FILE *stdin;
extern FILE *stdout;
extern FILE *stderr;
extern int remove (__const char *__filename) throw ();
extern int rename (__const char *__old, __const char *__new) throw ();
extern FILE *tmpfile (void) throw ();
# 157 "/usr/include/stdio.h" 3 4
extern FILE *tmpfile64 (void) throw ();
extern char *tmpnam (char *__s) throw ();
extern char *tmpnam_r (char *__s) throw ();
# 177 "/usr/include/stdio.h" 3 4
extern char *tempnam (__const char *__dir, __const char *__pfx)
throw () __attribute__ ((__malloc__));
extern int fclose (FILE *__stream) throw ();
extern int fflush (FILE *__stream) throw ();
extern int fflush_unlocked (FILE *__stream) throw ();
extern int fcloseall (void) throw ();
extern FILE *fopen (__const char *__restrict __filename,
__const char *__restrict __modes) throw ();
extern FILE *freopen (__const char *__restrict __filename,
__const char *__restrict __modes,
FILE *__restrict __stream) throw ();
# 221 "/usr/include/stdio.h" 3 4
extern FILE *fopen64 (__const char *__restrict __filename,
__const char *__restrict __modes) throw ();
extern FILE *freopen64 (__const char *__restrict __filename,
__const char *__restrict __modes,
FILE *__restrict __stream) throw ();
extern FILE *fdopen (int __fd, __const char *__modes) throw ();
extern FILE *fopencookie (void *__restrict __magic_cookie,
__const char *__restrict __modes,
_IO_cookie_io_functions_t __io_funcs) throw ();
extern FILE *fmemopen (void *__s, size_t __len, __const char *__modes) throw ();
extern FILE *open_memstream (char **__restrict __bufloc,
size_t *__restrict __sizeloc) throw ();
extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) throw ();
extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
int __modes, size_t __n) throw ();
extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
size_t __size) throw ();
extern void setlinebuf (FILE *__stream) throw ();
extern int fprintf (FILE *__restrict __stream,
__const char *__restrict __format, ...) throw ();
extern int printf (__const char *__restrict __format, ...) throw ();
extern int sprintf (char *__restrict __s,
__const char *__restrict __format, ...) throw ();
extern int vfprintf (FILE *__restrict __s, __const char *__restrict __format,
__gnuc_va_list __arg) throw ();
extern int vprintf (__const char *__restrict __format, __gnuc_va_list __arg)
throw ();
extern int vsprintf (char *__restrict __s, __const char *__restrict __format,
__gnuc_va_list __arg) throw ();
extern int snprintf (char *__restrict __s, size_t __maxlen,
__const char *__restrict __format, ...)
throw () __attribute__ ((__format__ (__printf__, 3, 4)));
extern int vsnprintf (char *__restrict __s, size_t __maxlen,
__const char *__restrict __format, __gnuc_va_list __arg)
throw () __attribute__ ((__format__ (__printf__, 3, 0)));
extern int vasprintf (char **__restrict __ptr, __const char *__restrict __f,
__gnuc_va_list __arg)
throw () __attribute__ ((__format__ (__printf__, 2, 0)));
extern int __asprintf (char **__restrict __ptr,
__const char *__restrict __fmt, ...)
throw () __attribute__ ((__format__ (__printf__, 2, 3)));
extern int asprintf (char **__restrict __ptr,
__const char *__restrict __fmt, ...)
throw () __attribute__ ((__format__ (__printf__, 2, 3)));
extern int vdprintf (int __fd, __const char *__restrict __fmt,
__gnuc_va_list __arg)
throw () __attribute__ ((__format__ (__printf__, 2, 0)));
extern int dprintf (int __fd, __const char *__restrict __fmt, ...)
throw () __attribute__ ((__format__ (__printf__, 2, 3)));
extern int fscanf (FILE *__restrict __stream,
__const char *__restrict __format, ...) throw ();
extern int scanf (__const char *__restrict __format, ...) throw ();
extern int sscanf (__const char *__restrict __s,
__const char *__restrict __format, ...) throw ();
extern int vfscanf (FILE *__restrict __s, __const char *__restrict __format,
__gnuc_va_list __arg)
throw () __attribute__ ((__format__ (__scanf__, 2, 0)));
extern int vscanf (__const char *__restrict __format, __gnuc_va_list __arg)
throw () __attribute__ ((__format__ (__scanf__, 1, 0)));
extern int vsscanf (__const char *__restrict __s,
__const char *__restrict __format, __gnuc_va_list __arg)
throw () __attribute__ ((__format__ (__scanf__, 2, 0)));
extern int fgetc (FILE *__stream) throw ();
extern int getc (FILE *__stream) throw ();
extern int getchar (void) throw ();
extern int getc_unlocked (FILE *__stream) throw ();
extern int getchar_unlocked (void) throw ();
extern int fgetc_unlocked (FILE *__stream) throw ();
extern int fputc (int __c, FILE *__stream) throw ();
extern int putc (int __c, FILE *__stream) throw ();
extern int putchar (int __c) throw ();
extern int fputc_unlocked (int __c, FILE *__stream) throw ();
extern int putc_unlocked (int __c, FILE *__stream) throw ();
extern int putchar_unlocked (int __c) throw ();
extern int getw (FILE *__stream) throw ();
extern int putw (int __w, FILE *__stream) throw ();
extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
throw ();
extern char *fgets_unlocked (char *__restrict __s, int __n,
FILE *__restrict __stream) throw ();
extern char *gets (char *__s) throw ();
# 425 "/usr/include/stdio.h" 3 4
extern __ssize_t __getdelim (char **__restrict __lineptr,
size_t *__restrict __n, int __delimiter,
FILE *__restrict __stream) throw ();
extern __ssize_t getdelim (char **__restrict __lineptr,
size_t *__restrict __n, int __delimiter,
FILE *__restrict __stream) throw ();
extern __ssize_t getline (char **__restrict __lineptr,
size_t *__restrict __n,
FILE *__restrict __stream) throw ();
extern int fputs (__const char *__restrict __s, FILE *__restrict __stream)
throw ();
extern int fputs_unlocked (__const char *__restrict __s,
FILE *__restrict __stream) throw ();
extern int puts (__const char *__s) throw ();
extern int ungetc (int __c, FILE *__stream) throw ();
extern size_t fread (void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream) throw ();
extern size_t fwrite (__const void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __s) throw ();
extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream) throw ();
extern size_t fwrite_unlocked (__const void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream) throw ();
extern int fseek (FILE *__stream, long int __off, int __whence) throw ();
extern long int ftell (FILE *__stream) throw ();
extern void rewind (FILE *__stream) throw ();
# 488 "/usr/include/stdio.h" 3 4
extern int fseeko (FILE *__stream, __off_t __off, int __whence) throw ();
extern __off_t ftello (FILE *__stream) throw ();
extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos)
throw ();
extern int fsetpos (FILE *__stream, __const fpos_t *__pos) throw ();
# 522 "/usr/include/stdio.h" 3 4
extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence) throw ();
extern __off64_t ftello64 (FILE *__stream) throw ();
extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos)
throw ();
extern int fsetpos64 (FILE *__stream, __const fpos64_t *__pos) throw ();
extern void clearerr (FILE *__stream) throw ();
extern int feof (FILE *__stream) throw ();
extern int ferror (FILE *__stream) throw ();
extern void clearerr_unlocked (FILE *__stream) throw ();
extern int feof_unlocked (FILE *__stream) throw ();
extern int ferror_unlocked (FILE *__stream) throw ();
extern void perror (__const char *__s) throw ();
extern int sys_nerr;
extern __const char *__const sys_errlist[];
extern int _sys_nerr;
extern __const char *__const _sys_errlist[];
extern int fileno (FILE *__stream) throw ();
extern int fileno_unlocked (FILE *__stream) throw ();
extern FILE *popen (__const char *__command, __const char *__modes) throw ();
extern int pclose (FILE *__stream) throw ();
extern char *ctermid (char *__s) throw ();
extern char *cuserid (char *__s) throw ();
struct obstack;
extern int obstack_printf (struct obstack *__restrict __obstack,
__const char *__restrict __format, ...) throw ();
extern int obstack_vprintf (struct obstack *__restrict __obstack,
__const char *__restrict __format,
__gnuc_va_list __args) throw ();
extern void flockfile (FILE *__stream) throw ();
extern int ftrylockfile (FILE *__stream) throw ();
extern void funlockfile (FILE *__stream) throw ();
# 629 "/usr/include/stdio.h" 3 4
# 1 "/usr/include/bits/stdio.h" 1 3 4
# 39 "/usr/include/bits/stdio.h" 3 4
inline int
vprintf (__const char *__restrict __fmt, __gnuc_va_list __arg) throw ()
{
return vfprintf (stdout, __fmt, __arg);
}
inline int
getchar (void) throw ()
{
return _IO_getc (stdin);
}
inline int
getc_unlocked (FILE *__fp) throw ()
{
return ((__fp)->_IO_read_ptr >= (__fp)->_IO_read_end ? __uflow (__fp) :
*(unsigned char *) (__fp)->_IO_read_ptr++);
}
inline int
getchar_unlocked (void) throw ()
{
return ((stdin)->_IO_read_ptr >= (stdin)->_IO_read_end ? __uflow (stdin) :
*(unsigned char *) (stdin)->_IO_read_ptr++);
}
inline int
putchar (int __c) throw ()
{
return _IO_putc (__c, stdout);
}
inline int
fputc_unlocked (int __c, FILE *__stream) throw ()
{
return (((__stream)->_IO_write_ptr >= (__stream)->_IO_write_end) ? __overflow
(__stream, (unsigned char) (__c)) : (unsigned char)
(*(__stream)->_IO_write_ptr++ = (__c)));
}
inline int
putc_unlocked (int __c, FILE *__stream) throw ()
{
return (((__stream)->_IO_write_ptr >= (__stream)->_IO_write_end) ? __overflow
(__stream, (unsigned char) (__c)) : (unsigned char)
(*(__stream)->_IO_write_ptr++ = (__c)));
}
inline int
putchar_unlocked (int __c) throw ()
{
return (((stdout)->_IO_write_ptr >= (stdout)->_IO_write_end) ? __overflow
(stdout, (unsigned char) (__c)) : (unsigned char) (*(stdout)->_IO_write_ptr++ =
(__c)));
}
inline __ssize_t
getline (char **__lineptr, size_t *__n, FILE *__stream) throw ()
{
return __getdelim (__lineptr, __n, '\n', __stream);
}
inline int
feof_unlocked (FILE *__stream) throw ()
{
return (((__stream)->_flags & 0x10) != 0);
}
inline int
ferror_unlocked (FILE *__stream) throw ()
{
return (((__stream)->_flags & 0x20) != 0);
}
# 630 "/usr/include/stdio.h" 2 3 4
}
# 3 "test.c" 2
double
compute_middle_range (double x_min, double x_max)
{
double m = .5 * (x_max + x_min);
return m;
}
int
main ()
{
double lower_range_x_min = 2.0;
double lower_range_x_max = 2.5;
double x0 = compute_middle_range (lower_range_x_min, lower_range_x_max);
fprintf (stdout, "%g\n", x0);
exit (0);
}
-------------------------------------------------------------------------------
>g++ -v -save-temps -O3 -fPIC test.c;a.out
Reading specs from
/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/specs
Configured with: ../gcc-3.3.3/configure --prefix
/media/home/salvaire/local_stow/stow/gcc-3.3.3 --enable-languages=c,c++,f77,objc
: (reconfigured) ../gcc-3.3.3/configure --prefix
/media/home/salvaire/local_stow/stow/gcc-3.3.3 --enable-languages=c,c++,f77,objc
--enable-threads
Thread model: posix
gcc version 3.3.3
/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/cc1plus
-E -D__GNUG__=3 -quiet -v -D__GNUC__=3 -D__GNUC_MINOR__=3
-D__GNUC_PATCHLEVEL__=3 -D_GNU_SOURCE test.c -fPIC -O3 test.ii
ignoring nonexistent directory
"/media/home/salvaire/local_stow/stow/gcc-3.3.3/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/media/home/salvaire/local_stow/stow/gcc-3.3.3/include/c++/3.3.3
/media/home/salvaire/local_stow/stow/gcc-3.3.3/include/c++/3.3.3/i686-pc-linux-gnu
/media/home/salvaire/local_stow/stow/gcc-3.3.3/include/c++/3.3.3/backward
/usr/local/include
/media/home/salvaire/local_stow/stow/gcc-3.3.3/include
/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include
/usr/include
End of search list.
/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/cc1plus
-fpreprocessed test.ii -quiet -dumpbase test.c -auxbase test -O3 -version -fPIC
-o test.s
GNU C++ version 3.3.3 (i686-pc-linux-gnu)
compiled by GNU C version 3.3.3.
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64285
as --traditional-format -V -Qy -o test.o test.s
GNU assembler version 2.10.91 (i486-suse-linux) using BFD version 2.10.91.0.4
/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/collect2
-m elf_i386 -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o /usr/lib/crti.o
/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/crtbegin.o
-L/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3
-L/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../..
test.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/media/home/salvaire/local_stow/stow/gcc-3.3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/crtend.o
/usr/lib/crtn.o
7.45497e-16 !!!!!!
--
Summary: with -O3 and -fPIC .5 * (2. + 2.5) = 2.60354e-38 instead
of 2.25
Product: gcc
Version: 3.3.3
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: fabrice dot salvaire at desy dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16523