[Bug c/37975] New: Incorrect argument checking for printf: "format not a string literal, argument types not checked", where it can be checked

[Bug c/37975] New: Incorrect argument checking for printf: "format not a string literal, argument types not checked", where it can be checked

[rilium at mail dot ru]

I wrote i simple code snippet to demonstrate problem:

#include <string.h>
#include <stdlib.h>
#include <stdio.h>
void f(const char* str1, const char* str2)
{
        const char* fmt = "Something is: %s, and something another is: %s\n";
        const size_t buff_len = strlen(fmt) + strlen(str1) + strlen(str2) + 1;
        char* buff = (char*)malloc(buff_len);
        sprintf(buff, fmt, "Str1", "str2");
        /* Do something with buff */
        free(buff);

}

int main()
{
        return EXIT_SUCCESS;
}

I compile it this way:
rilium@rilium-lenovo:/tmp$ LANG=C gcc test.c -Wall -Wformat=2
test.c: In function 'f':
test.c:9: warning: format not a string literal, argument types not checked

I think, that in this case, warning is not correct, format is string literal,
and is not gotten in function parameters(as i saw in previous bug reports for
this warning), so compiler really can check argument types.

Please, resolve this problem.

My gcc -v output:
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.3.2-1'
--with-bugurl=file:///usr/share/doc/gcc-4.3/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.3
--program-suffix=-4.3 --enable-clocale=gnu --enable-libstdcxx-debug
--enable-objc-gc --enable-mpfr --enable-targets=all --enable-cld
--enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu
--target=i486-linux-gnu
Thread model: posix
gcc version 4.3.2 (Debian 4.3.2-1) 

System: Debian lenny

test.i:
# 1 "test.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "test.c"
# 1 "/usr/include/string.h" 1 3 4
# 26 "/usr/include/string.h" 3 4
# 1 "/usr/include/features.h" 1 3 4
# 330 "/usr/include/features.h" 3 4
# 1 "/usr/include/sys/cdefs.h" 1 3 4
# 348 "/usr/include/sys/cdefs.h" 3 4
# 1 "/usr/include/bits/wordsize.h" 1 3 4
# 349 "/usr/include/sys/cdefs.h" 2 3 4
# 331 "/usr/include/features.h" 2 3 4
# 354 "/usr/include/features.h" 3 4
# 1 "/usr/include/gnu/stubs.h" 1 3 4



# 1 "/usr/include/bits/wordsize.h" 1 3 4
# 5 "/usr/include/gnu/stubs.h" 2 3 4


# 1 "/usr/include/gnu/stubs-32.h" 1 3 4
# 8 "/usr/include/gnu/stubs.h" 2 3 4
# 355 "/usr/include/features.h" 2 3 4
# 27 "/usr/include/string.h" 2 3 4






# 1 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stddef.h" 1 3 4
# 214 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stddef.h" 3 4
typedef unsigned int size_t;
# 34 "/usr/include/string.h" 2 3 4




extern void *memcpy (void *__restrict __dest,
       __const void *__restrict __src, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));


extern void *memmove (void *__dest, __const void *__src, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));






extern void *memccpy (void *__restrict __dest, __const void *__restrict __src,
        int __c, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));





extern void *memset (void *__s, int __c, size_t __n) __attribute__
((__nothrow__)) __attribute__ ((__nonnull__ (1)));


extern int memcmp (__const void *__s1, __const void *__s2, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));


extern void *memchr (__const void *__s, int __c, size_t __n)
      __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1)));

# 82 "/usr/include/string.h" 3 4


extern char *strcpy (char *__restrict __dest, __const char *__restrict __src)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));

extern char *strncpy (char *__restrict __dest,
        __const char *__restrict __src, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));


extern char *strcat (char *__restrict __dest, __const char *__restrict __src)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));

extern char *strncat (char *__restrict __dest, __const char *__restrict __src,
        size_t __n) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__
(1, 2)));


extern int strcmp (__const char *__s1, __const char *__s2)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));

extern int strncmp (__const char *__s1, __const char *__s2, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));


extern int strcoll (__const char *__s1, __const char *__s2)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));

extern size_t strxfrm (char *__restrict __dest,
         __const char *__restrict __src, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (2)));

# 130 "/usr/include/string.h" 3 4
extern char *strdup (__const char *__s)
     __attribute__ ((__nothrow__)) __attribute__ ((__malloc__)) __attribute__
((__nonnull__ (1)));
# 165 "/usr/include/string.h" 3 4


extern char *strchr (__const char *__s, int __c)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1)));

extern char *strrchr (__const char *__s, int __c)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1)));

# 181 "/usr/include/string.h" 3 4



extern size_t strcspn (__const char *__s, __const char *__reject)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));


extern size_t strspn (__const char *__s, __const char *__accept)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));

extern char *strpbrk (__const char *__s, __const char *__accept)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));

extern char *strstr (__const char *__haystack, __const char *__needle)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));



extern char *strtok (char *__restrict __s, __const char *__restrict __delim)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (2)));




extern char *__strtok_r (char *__restrict __s,
    __const char *__restrict __delim,
    char **__restrict __save_ptr)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (2, 3)));

extern char *strtok_r (char *__restrict __s, __const char *__restrict __delim,
         char **__restrict __save_ptr)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (2, 3)));
# 240 "/usr/include/string.h" 3 4


extern size_t strlen (__const char *__s)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1)));

# 254 "/usr/include/string.h" 3 4


extern char *strerror (int __errnum) __attribute__ ((__nothrow__));

# 270 "/usr/include/string.h" 3 4
extern int strerror_r (int __errnum, char *__buf, size_t __buflen) __asm__ (""
"__xpg_strerror_r") __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__
(2)));
# 294 "/usr/include/string.h" 3 4
extern void __bzero (void *__s, size_t __n) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1)));



extern void bcopy (__const void *__src, void *__dest, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));


extern void bzero (void *__s, size_t __n) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1)));


extern int bcmp (__const void *__s1, __const void *__s2, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));


extern char *index (__const char *__s, int __c)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1)));


extern char *rindex (__const char *__s, int __c)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1)));



extern int ffs (int __i) __attribute__ ((__nothrow__)) __attribute__
((__const__));
# 331 "/usr/include/string.h" 3 4
extern int strcasecmp (__const char *__s1, __const char *__s2)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));


extern int strncasecmp (__const char *__s1, __const char *__s2, size_t __n)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1, 2)));
# 354 "/usr/include/string.h" 3 4
extern char *strsep (char **__restrict __stringp,
       __const char *__restrict __delim)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));
# 432 "/usr/include/string.h" 3 4

# 2 "test.c" 2
# 1 "/usr/include/stdlib.h" 1 3 4
# 33 "/usr/include/stdlib.h" 3 4
# 1 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stddef.h" 1 3 4
# 326 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stddef.h" 3 4
typedef int wchar_t;
# 34 "/usr/include/stdlib.h" 2 3 4


# 96 "/usr/include/stdlib.h" 3 4


typedef struct
  {
    int quot;
    int rem;
  } div_t;



typedef struct
  {
    long int quot;
    long int rem;
  } ldiv_t;



# 140 "/usr/include/stdlib.h" 3 4
extern size_t __ctype_get_mb_cur_max (void) __attribute__ ((__nothrow__)) ;




extern double atof (__const char *__nptr)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1))) ;

extern int atoi (__const char *__nptr)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1))) ;

extern long int atol (__const char *__nptr)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1))) ;





__extension__ extern long long int atoll (__const char *__nptr)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1))) ;





extern double strtod (__const char *__restrict __nptr,
        char **__restrict __endptr)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;

# 182 "/usr/include/stdlib.h" 3 4


extern long int strtol (__const char *__restrict __nptr,
   char **__restrict __endptr, int __base)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;

extern unsigned long int strtoul (__const char *__restrict __nptr,
      char **__restrict __endptr, int __base)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;




__extension__
extern long long int strtoq (__const char *__restrict __nptr,
        char **__restrict __endptr, int __base)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;

__extension__
extern unsigned long long int strtouq (__const char *__restrict __nptr,
           char **__restrict __endptr, int __base)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;





__extension__
extern long long int strtoll (__const char *__restrict __nptr,
         char **__restrict __endptr, int __base)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;

__extension__
extern unsigned long long int strtoull (__const char *__restrict __nptr,
     char **__restrict __endptr, int __base)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;

# 311 "/usr/include/stdlib.h" 3 4
extern char *l64a (long int __n) __attribute__ ((__nothrow__)) ;


extern long int a64l (__const char *__s)
     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__
((__nonnull__ (1))) ;




# 1 "/usr/include/sys/types.h" 1 3 4
# 29 "/usr/include/sys/types.h" 3 4


# 1 "/usr/include/bits/types.h" 1 3 4
# 28 "/usr/include/bits/types.h" 3 4
# 1 "/usr/include/bits/wordsize.h" 1 3 4
# 29 "/usr/include/bits/types.h" 2 3 4


typedef unsigned char __u_char;
typedef unsigned short int __u_short;
typedef unsigned int __u_int;
typedef unsigned long int __u_long;


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;







__extension__ typedef long long int __quad_t;
__extension__ typedef unsigned long long int __u_quad_t;
# 131 "/usr/include/bits/types.h" 3 4
# 1 "/usr/include/bits/typesizes.h" 1 3 4
# 132 "/usr/include/bits/types.h" 2 3 4


__extension__ typedef __u_quad_t __dev_t;
__extension__ typedef unsigned int __uid_t;
__extension__ typedef unsigned int __gid_t;
__extension__ typedef unsigned long int __ino_t;
__extension__ typedef __u_quad_t __ino64_t;
__extension__ typedef unsigned int __mode_t;
__extension__ typedef unsigned int __nlink_t;
__extension__ typedef long int __off_t;
__extension__ typedef __quad_t __off64_t;
__extension__ typedef int __pid_t;
__extension__ typedef struct { int __val[2]; } __fsid_t;
__extension__ typedef long int __clock_t;
__extension__ typedef unsigned long int __rlim_t;
__extension__ typedef __u_quad_t __rlim64_t;
__extension__ typedef unsigned int __id_t;
__extension__ typedef long int __time_t;
__extension__ typedef unsigned int __useconds_t;
__extension__ typedef long int __suseconds_t;

__extension__ typedef int __daddr_t;
__extension__ typedef long int __swblk_t;
__extension__ typedef int __key_t;


__extension__ typedef int __clockid_t;


__extension__ typedef void * __timer_t;


__extension__ typedef long int __blksize_t;




__extension__ typedef long int __blkcnt_t;
__extension__ typedef __quad_t __blkcnt64_t;


__extension__ typedef unsigned long int __fsblkcnt_t;
__extension__ typedef __u_quad_t __fsblkcnt64_t;


__extension__ typedef unsigned long int __fsfilcnt_t;
__extension__ typedef __u_quad_t __fsfilcnt64_t;

__extension__ typedef int __ssize_t;



typedef __off64_t __loff_t;
typedef __quad_t *__qaddr_t;
typedef char *__caddr_t;


__extension__ typedef int __intptr_t;


__extension__ typedef unsigned int __socklen_t;
# 32 "/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;
# 62 "/usr/include/sys/types.h" 3 4
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;
# 100 "/usr/include/sys/types.h" 3 4
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;
# 133 "/usr/include/sys/types.h" 3 4
# 1 "/usr/include/time.h" 1 3 4
# 75 "/usr/include/time.h" 3 4


typedef __time_t time_t;



# 93 "/usr/include/time.h" 3 4
typedef __clockid_t clockid_t;
# 105 "/usr/include/time.h" 3 4
typedef __timer_t timer_t;
# 134 "/usr/include/sys/types.h" 2 3 4
# 147 "/usr/include/sys/types.h" 3 4
# 1 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stddef.h" 1 3 4
# 148 "/usr/include/sys/types.h" 2 3 4



typedef unsigned long int ulong;
typedef unsigned short int ushort;
typedef unsigned int uint;
# 195 "/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__)));
# 217 "/usr/include/sys/types.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
# 218 "/usr/include/sys/types.h" 2 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
# 24 "/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
# 121 "/usr/include/time.h" 3 4
struct timespec
  {
    __time_t tv_sec;
    long int tv_nsec;
  };
# 45 "/usr/include/sys/select.h" 2 3 4

# 1 "/usr/include/bits/time.h" 1 3 4
# 69 "/usr/include/bits/time.h" 3 4
struct timeval
  {
    __time_t tv_sec;
    __suseconds_t tv_usec;
  };
# 47 "/usr/include/sys/select.h" 2 3 4


typedef __suseconds_t suseconds_t;





typedef long int __fd_mask;
# 67 "/usr/include/sys/select.h" 3 4
typedef struct
  {






    __fd_mask __fds_bits[1024 / (8 * sizeof (__fd_mask))];


  } fd_set;






typedef __fd_mask fd_mask;
# 99 "/usr/include/sys/select.h" 3 4

# 109 "/usr/include/sys/select.h" 3 4
extern int select (int __nfds, fd_set *__restrict __readfds,
     fd_set *__restrict __writefds,
     fd_set *__restrict __exceptfds,
     struct timeval *__restrict __timeout);
# 121 "/usr/include/sys/select.h" 3 4
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);



# 221 "/usr/include/sys/types.h" 2 3 4


# 1 "/usr/include/sys/sysmacros.h" 1 3 4
# 30 "/usr/include/sys/sysmacros.h" 3 4
__extension__
extern unsigned int gnu_dev_major (unsigned long long int __dev)
     __attribute__ ((__nothrow__));
__extension__
extern unsigned int gnu_dev_minor (unsigned long long int __dev)
     __attribute__ ((__nothrow__));
__extension__
extern unsigned long long int gnu_dev_makedev (unsigned int __major,
            unsigned int __minor)
     __attribute__ ((__nothrow__));
# 224 "/usr/include/sys/types.h" 2 3 4
# 235 "/usr/include/sys/types.h" 3 4
typedef __blkcnt_t blkcnt_t;



typedef __fsblkcnt_t fsblkcnt_t;



typedef __fsfilcnt_t fsfilcnt_t;
# 270 "/usr/include/sys/types.h" 3 4
# 1 "/usr/include/bits/pthreadtypes.h" 1 3 4
# 23 "/usr/include/bits/pthreadtypes.h" 3 4
# 1 "/usr/include/bits/wordsize.h" 1 3 4
# 24 "/usr/include/bits/pthreadtypes.h" 2 3 4
# 50 "/usr/include/bits/pthreadtypes.h" 3 4
typedef unsigned long int pthread_t;


typedef union
{
  char __size[36];
  long int __align;
} pthread_attr_t;
# 67 "/usr/include/bits/pthreadtypes.h" 3 4
typedef struct __pthread_internal_slist
{
  struct __pthread_internal_slist *__next;
} __pthread_slist_t;





typedef union
{
  struct __pthread_mutex_s
  {
    int __lock;
    unsigned int __count;
    int __owner;





    int __kind;





    unsigned int __nusers;
    __extension__ union
    {
      int __spins;
      __pthread_slist_t __list;
    };

  } __data;
  char __size[24];
  long int __align;
} pthread_mutex_t;

typedef union
{
  char __size[4];
  int __align;
} pthread_mutexattr_t;




typedef union
{
  struct
  {
    int __lock;
    unsigned int __futex;
    __extension__ unsigned long long int __total_seq;
    __extension__ unsigned long long int __wakeup_seq;
    __extension__ unsigned long long int __woken_seq;
    void *__mutex;
    unsigned int __nwaiters;
    unsigned int __broadcast_seq;
  } __data;
  char __size[48];
  __extension__ long long int __align;
} pthread_cond_t;

typedef union
{
  char __size[4];
  int __align;
} pthread_condattr_t;



typedef unsigned int pthread_key_t;



typedef int pthread_once_t;





typedef union
{
# 170 "/usr/include/bits/pthreadtypes.h" 3 4
  struct
  {
    int __lock;
    unsigned int __nr_readers;
    unsigned int __readers_wakeup;
    unsigned int __writer_wakeup;
    unsigned int __nr_readers_queued;
    unsigned int __nr_writers_queued;


    unsigned char __flags;
    unsigned char __shared;
    unsigned char __pad1;
    unsigned char __pad2;
    int __writer;
  } __data;

  char __size[32];
  long int __align;
} pthread_rwlock_t;

typedef union
{
  char __size[8];
  long int __align;
} pthread_rwlockattr_t;





typedef volatile int pthread_spinlock_t;




typedef union
{
  char __size[20];
  long int __align;
} pthread_barrier_t;

typedef union
{
  char __size[4];
  int __align;
} pthread_barrierattr_t;
# 271 "/usr/include/sys/types.h" 2 3 4



# 321 "/usr/include/stdlib.h" 2 3 4






extern long int random (void) __attribute__ ((__nothrow__));


extern void srandom (unsigned int __seed) __attribute__ ((__nothrow__));





extern char *initstate (unsigned int __seed, char *__statebuf,
   size_t __statelen) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__
(2)));



extern char *setstate (char *__statebuf) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1)));







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) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1, 2)));

extern int srandom_r (unsigned int __seed, struct random_data *__buf)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (2)));

extern int initstate_r (unsigned int __seed, char *__restrict __statebuf,
   size_t __statelen,
   struct random_data *__restrict __buf)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (2, 4)));

extern int setstate_r (char *__restrict __statebuf,
         struct random_data *__restrict __buf)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));






extern int rand (void) __attribute__ ((__nothrow__));

extern void srand (unsigned int __seed) __attribute__ ((__nothrow__));




extern int rand_r (unsigned int *__seed) __attribute__ ((__nothrow__));







extern double drand48 (void) __attribute__ ((__nothrow__));
extern double erand48 (unsigned short int __xsubi[3]) __attribute__
((__nothrow__)) __attribute__ ((__nonnull__ (1)));


extern long int lrand48 (void) __attribute__ ((__nothrow__));
extern long int nrand48 (unsigned short int __xsubi[3])
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1)));


extern long int mrand48 (void) __attribute__ ((__nothrow__));
extern long int jrand48 (unsigned short int __xsubi[3])
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1)));


extern void srand48 (long int __seedval) __attribute__ ((__nothrow__));
extern unsigned short int *seed48 (unsigned short int __seed16v[3])
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1)));
extern void lcong48 (unsigned short int __param[7]) __attribute__
((__nothrow__)) __attribute__ ((__nonnull__ (1)));





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) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1, 2)));
extern int erand48_r (unsigned short int __xsubi[3],
        struct drand48_data *__restrict __buffer,
        double *__restrict __result) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1, 2)));


extern int lrand48_r (struct drand48_data *__restrict __buffer,
        long int *__restrict __result)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));
extern int nrand48_r (unsigned short int __xsubi[3],
        struct drand48_data *__restrict __buffer,
        long int *__restrict __result)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));


extern int mrand48_r (struct drand48_data *__restrict __buffer,
        long int *__restrict __result)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));
extern int jrand48_r (unsigned short int __xsubi[3],
        struct drand48_data *__restrict __buffer,
        long int *__restrict __result)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));


extern int srand48_r (long int __seedval, struct drand48_data *__buffer)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (2)));

extern int seed48_r (unsigned short int __seed16v[3],
       struct drand48_data *__buffer) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1, 2)));

extern int lcong48_r (unsigned short int __param[7],
        struct drand48_data *__buffer)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));









extern void *malloc (size_t __size) __attribute__ ((__nothrow__)) __attribute__
((__malloc__)) ;

extern void *calloc (size_t __nmemb, size_t __size)
     __attribute__ ((__nothrow__)) __attribute__ ((__malloc__)) ;










extern void *realloc (void *__ptr, size_t __size)
     __attribute__ ((__nothrow__)) __attribute__ ((__warn_unused_result__));

extern void free (void *__ptr) __attribute__ ((__nothrow__));




extern void cfree (void *__ptr) __attribute__ ((__nothrow__));



# 1 "/usr/include/alloca.h" 1 3 4
# 25 "/usr/include/alloca.h" 3 4
# 1 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stddef.h" 1 3 4
# 26 "/usr/include/alloca.h" 2 3 4







extern void *alloca (size_t __size) __attribute__ ((__nothrow__));






# 498 "/usr/include/stdlib.h" 2 3 4




extern void *valloc (size_t __size) __attribute__ ((__nothrow__)) __attribute__
((__malloc__)) ;




extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;




extern void abort (void) __attribute__ ((__nothrow__)) __attribute__
((__noreturn__));



extern int atexit (void (*__func) (void)) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1)));





extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1)));






extern void exit (int __status) __attribute__ ((__nothrow__)) __attribute__
((__noreturn__));

# 543 "/usr/include/stdlib.h" 3 4


extern char *getenv (__const char *__name) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1))) ;




extern char *__secure_getenv (__const char *__name)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;





extern int putenv (char *__string) __attribute__ ((__nothrow__)) __attribute__
((__nonnull__ (1)));





extern int setenv (__const char *__name, __const char *__value, int __replace)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (2)));


extern int unsetenv (__const char *__name) __attribute__ ((__nothrow__));






extern int clearenv (void) __attribute__ ((__nothrow__));
# 583 "/usr/include/stdlib.h" 3 4
extern char *mktemp (char *__template) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1))) ;
# 594 "/usr/include/stdlib.h" 3 4
extern int mkstemp (char *__template) __attribute__ ((__nonnull__ (1))) ;
# 614 "/usr/include/stdlib.h" 3 4
extern char *mkdtemp (char *__template) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1))) ;
# 640 "/usr/include/stdlib.h" 3 4





extern int system (__const char *__command) ;

# 662 "/usr/include/stdlib.h" 3 4
extern char *realpath (__const char *__restrict __name,
         char *__restrict __resolved) __attribute__ ((__nothrow__)) ;






typedef int (*__compar_fn_t) (__const void *, __const void *);









extern void *bsearch (__const void *__key, __const void *__base,
        size_t __nmemb, size_t __size, __compar_fn_t __compar)
     __attribute__ ((__nonnull__ (1, 2, 5))) ;



extern void qsort (void *__base, size_t __nmemb, size_t __size,
     __compar_fn_t __compar) __attribute__ ((__nonnull__ (1, 4)));



extern int abs (int __x) __attribute__ ((__nothrow__)) __attribute__
((__const__)) ;
extern long int labs (long int __x) __attribute__ ((__nothrow__)) __attribute__
((__const__)) ;












extern div_t div (int __numer, int __denom)
     __attribute__ ((__nothrow__)) __attribute__ ((__const__)) ;
extern ldiv_t ldiv (long int __numer, long int __denom)
     __attribute__ ((__nothrow__)) __attribute__ ((__const__)) ;

# 727 "/usr/include/stdlib.h" 3 4
extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt,
     int *__restrict __sign) __attribute__ ((__nothrow__)) __attribute__
((__nonnull__ (3, 4))) ;




extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt,
     int *__restrict __sign) __attribute__ ((__nothrow__)) __attribute__
((__nonnull__ (3, 4))) ;




extern char *gcvt (double __value, int __ndigit, char *__buf)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (3))) ;




extern char *qecvt (long double __value, int __ndigit,
      int *__restrict __decpt, int *__restrict __sign)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (3, 4))) ;
extern char *qfcvt (long double __value, int __ndigit,
      int *__restrict __decpt, int *__restrict __sign)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (3, 4))) ;
extern char *qgcvt (long double __value, int __ndigit, char *__buf)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (3))) ;




extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt,
     int *__restrict __sign, char *__restrict __buf,
     size_t __len) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__
(3, 4, 5)));
extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt,
     int *__restrict __sign, char *__restrict __buf,
     size_t __len) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__
(3, 4, 5)));

extern int qecvt_r (long double __value, int __ndigit,
      int *__restrict __decpt, int *__restrict __sign,
      char *__restrict __buf, size_t __len)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (3, 4, 5)));
extern int qfcvt_r (long double __value, int __ndigit,
      int *__restrict __decpt, int *__restrict __sign,
      char *__restrict __buf, size_t __len)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (3, 4, 5)));







extern int mblen (__const char *__s, size_t __n) __attribute__ ((__nothrow__))
;


extern int mbtowc (wchar_t *__restrict __pwc,
     __const char *__restrict __s, size_t __n) __attribute__ ((__nothrow__)) ;


extern int wctomb (char *__s, wchar_t __wchar) __attribute__ ((__nothrow__)) ;



extern size_t mbstowcs (wchar_t *__restrict __pwcs,
   __const char *__restrict __s, size_t __n) __attribute__ ((__nothrow__));

extern size_t wcstombs (char *__restrict __s,
   __const wchar_t *__restrict __pwcs, size_t __n)
     __attribute__ ((__nothrow__));








extern int rpmatch (__const char *__response) __attribute__ ((__nothrow__))
__attribute__ ((__nonnull__ (1))) ;
# 832 "/usr/include/stdlib.h" 3 4
extern int posix_openpt (int __oflag) ;
# 867 "/usr/include/stdlib.h" 3 4
extern int getloadavg (double __loadavg[], int __nelem)
     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1)));
# 883 "/usr/include/stdlib.h" 3 4

# 3 "test.c" 2
# 1 "/usr/include/stdio.h" 1 3 4
# 30 "/usr/include/stdio.h" 3 4




# 1 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stddef.h" 1 3 4
# 35 "/usr/include/stdio.h" 2 3 4
# 45 "/usr/include/stdio.h" 3 4
struct _IO_FILE;



typedef struct _IO_FILE FILE;





# 65 "/usr/include/stdio.h" 3 4
typedef struct _IO_FILE __FILE;
# 75 "/usr/include/stdio.h" 3 4
# 1 "/usr/include/libio.h" 1 3 4
# 32 "/usr/include/libio.h" 3 4
# 1 "/usr/include/_G_config.h" 1 3 4
# 15 "/usr/include/_G_config.h" 3 4
# 1 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stddef.h" 1 3 4
# 16 "/usr/include/_G_config.h" 2 3 4




# 1 "/usr/include/wchar.h" 1 3 4
# 78 "/usr/include/wchar.h" 3 4
typedef struct
{
  int __count;
  union
  {

    unsigned int __wch;



    char __wchb[4];
  } __value;
} __mbstate_t;
# 21 "/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;
# 53 "/usr/include/_G_config.h" 3 4
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__)));
# 33 "/usr/include/libio.h" 2 3 4
# 53 "/usr/include/libio.h" 3 4
# 1 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stdarg.h" 1 3 4
# 43 "/usr/lib/gcc/i486-linux-gnu/4.3.2/include/stdarg.h" 3 4
typedef __builtin_va_list __gnuc_va_list;
# 54 "/usr/include/libio.h" 2 3 4
# 170 "/usr/include/libio.h" 3 4
struct _IO_jump_t; struct _IO_FILE;
# 180 "/usr/include/libio.h" 3 4
typedef void _IO_lock_t;





struct _IO_marker {
  struct _IO_marker *_next;
  struct _IO_FILE *_sbuf;



  int _pos;
# 203 "/usr/include/libio.h" 3 4
};


enum __codecvt_result
{
  __codecvt_ok,
  __codecvt_partial,
  __codecvt_error,
  __codecvt_noconv
};
# 271 "/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 _flags2;

  __off_t _old_offset;



  unsigned short _cur_column;
  signed char _vtable_offset;
  char _shortbuf[1];



  _IO_lock_t *_lock;
# 319 "/usr/include/libio.h" 3 4
  __off64_t _offset;
# 328 "/usr/include/libio.h" 3 4
  void *__pad1;
  void *__pad2;
  void *__pad3;
  void *__pad4;
  size_t __pad5;

  int _mode;

  char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)];

};


typedef struct _IO_FILE _IO_FILE;


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_;
# 364 "/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);
# 416 "/usr/include/libio.h" 3 4
extern int __underflow (_IO_FILE *);
extern int __uflow (_IO_FILE *);
extern int __overflow (_IO_FILE *, int);
# 458 "/usr/include/libio.h" 3 4
extern int _IO_getc (_IO_FILE *__fp);
extern int _IO_putc (int __c, _IO_FILE *__fp);
extern int _IO_feof (_IO_FILE *__fp) __attribute__ ((__nothrow__));
extern int _IO_ferror (_IO_FILE *__fp) __attribute__ ((__nothrow__));

extern int _IO_peekc_locked (_IO_FILE *__fp);





extern void _IO_flockfile (_IO_FILE *) __attribute__ ((__nothrow__));
extern void _IO_funlockfile (_IO_FILE *) __attribute__ ((__nothrow__));
extern int _IO_ftrylockfile (_IO_FILE *) __attribute__ ((__nothrow__));
# 488 "/usr/include/libio.h" 3 4
extern int _IO_vfscanf (_IO_FILE * __restrict, const char * __restrict,
   __gnuc_va_list, int *__restrict);
extern int _IO_vfprintf (_IO_FILE *__restrict, const char *__restrict,
    __gnuc_va_list);
extern __ssize_t _IO_padn (_IO_FILE *, int, __ssize_t);
extern size_t _IO_sgetn (_IO_FILE *, void *, size_t);

extern __off64_t _IO_seekoff (_IO_FILE *, __off64_t, int, int);
extern __off64_t _IO_seekpos (_IO_FILE *, __off64_t, int);

extern void _IO_free_backup_area (_IO_FILE *) __attribute__ ((__nothrow__));
# 76 "/usr/include/stdio.h" 2 3 4
# 89 "/usr/include/stdio.h" 3 4


typedef _G_fpos_t fpos_t;




# 141 "/usr/include/stdio.h" 3 4
# 1 "/usr/include/bits/stdio_lim.h" 1 3 4
# 142 "/usr/include/stdio.h" 2 3 4



extern struct _IO_FILE *stdin;
extern struct _IO_FILE *stdout;
extern struct _IO_FILE *stderr;







extern int remove (__const char *__filename) __attribute__ ((__nothrow__));

extern int rename (__const char *__old, __const char *__new) __attribute__
((__nothrow__));














extern FILE *tmpfile (void) ;
# 186 "/usr/include/stdio.h" 3 4
extern char *tmpnam (char *__s) __attribute__ ((__nothrow__)) ;





extern char *tmpnam_r (char *__s) __attribute__ ((__nothrow__)) ;
# 204 "/usr/include/stdio.h" 3 4
extern char *tempnam (__const char *__dir, __const char *__pfx)
     __attribute__ ((__nothrow__)) __attribute__ ((__malloc__)) ;








extern int fclose (FILE *__stream);




extern int fflush (FILE *__stream);

# 229 "/usr/include/stdio.h" 3 4
extern int fflush_unlocked (FILE *__stream);
# 243 "/usr/include/stdio.h" 3 4






extern FILE *fopen (__const char *__restrict __filename,
      __const char *__restrict __modes) ;




extern FILE *freopen (__const char *__restrict __filename,
        __const char *__restrict __modes,
        FILE *__restrict __stream) ;
# 272 "/usr/include/stdio.h" 3 4

# 283 "/usr/include/stdio.h" 3 4
extern FILE *fdopen (int __fd, __const char *__modes) __attribute__
((__nothrow__)) ;
# 304 "/usr/include/stdio.h" 3 4



extern void setbuf (FILE *__restrict __stream, char *__restrict __buf)
__attribute__ ((__nothrow__));



extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
      int __modes, size_t __n) __attribute__ ((__nothrow__));





extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
         size_t __size) __attribute__ ((__nothrow__));


extern void setlinebuf (FILE *__stream) __attribute__ ((__nothrow__));








extern int fprintf (FILE *__restrict __stream,
      __const char *__restrict __format, ...);




extern int printf (__const char *__restrict __format, ...);

extern int sprintf (char *__restrict __s,
      __const char *__restrict __format, ...) __attribute__ ((__nothrow__));





extern int vfprintf (FILE *__restrict __s, __const char *__restrict __format,
       __gnuc_va_list __arg);




extern int vprintf (__const char *__restrict __format, __gnuc_va_list __arg);

extern int vsprintf (char *__restrict __s, __const char *__restrict __format,
       __gnuc_va_list __arg) __attribute__ ((__nothrow__));





extern int snprintf (char *__restrict __s, size_t __maxlen,
       __const char *__restrict __format, ...)
     __attribute__ ((__nothrow__)) __attribute__ ((__format__ (__printf__, 3,
4)));

extern int vsnprintf (char *__restrict __s, size_t __maxlen,
        __const char *__restrict __format, __gnuc_va_list __arg)
     __attribute__ ((__nothrow__)) __attribute__ ((__format__ (__printf__, 3,
0)));

# 398 "/usr/include/stdio.h" 3 4





extern int fscanf (FILE *__restrict __stream,
     __const char *__restrict __format, ...) ;




extern int scanf (__const char *__restrict __format, ...) ;

extern int sscanf (__const char *__restrict __s,
     __const char *__restrict __format, ...) __attribute__ ((__nothrow__));
# 441 "/usr/include/stdio.h" 3 4

# 504 "/usr/include/stdio.h" 3 4





extern int fgetc (FILE *__stream);
extern int getc (FILE *__stream);





extern int getchar (void);

# 528 "/usr/include/stdio.h" 3 4
extern int getc_unlocked (FILE *__stream);
extern int getchar_unlocked (void);
# 539 "/usr/include/stdio.h" 3 4
extern int fgetc_unlocked (FILE *__stream);











extern int fputc (int __c, FILE *__stream);
extern int putc (int __c, FILE *__stream);





extern int putchar (int __c);

# 572 "/usr/include/stdio.h" 3 4
extern int fputc_unlocked (int __c, FILE *__stream);







extern int putc_unlocked (int __c, FILE *__stream);
extern int putchar_unlocked (int __c);






extern int getw (FILE *__stream);


extern int putw (int __w, FILE *__stream);








extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
     ;






extern char *gets (char *__s) ;

# 653 "/usr/include/stdio.h" 3 4





extern int fputs (__const char *__restrict __s, FILE *__restrict __stream);





extern int puts (__const char *__s);






extern int ungetc (int __c, FILE *__stream);






extern size_t fread (void *__restrict __ptr, size_t __size,
       size_t __n, FILE *__restrict __stream) ;




extern size_t fwrite (__const void *__restrict __ptr, size_t __size,
        size_t __n, FILE *__restrict __s) ;

# 706 "/usr/include/stdio.h" 3 4
extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
         size_t __n, FILE *__restrict __stream) ;
extern size_t fwrite_unlocked (__const void *__restrict __ptr, size_t __size,
          size_t __n, FILE *__restrict __stream) ;








extern int fseek (FILE *__stream, long int __off, int __whence);




extern long int ftell (FILE *__stream) ;




extern void rewind (FILE *__stream);

# 742 "/usr/include/stdio.h" 3 4
extern int fseeko (FILE *__stream, __off_t __off, int __whence);




extern __off_t ftello (FILE *__stream) ;
# 761 "/usr/include/stdio.h" 3 4






extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos);




extern int fsetpos (FILE *__stream, __const fpos_t *__pos);
# 784 "/usr/include/stdio.h" 3 4

# 793 "/usr/include/stdio.h" 3 4


extern void clearerr (FILE *__stream) __attribute__ ((__nothrow__));

extern int feof (FILE *__stream) __attribute__ ((__nothrow__)) ;

extern int ferror (FILE *__stream) __attribute__ ((__nothrow__)) ;




extern void clearerr_unlocked (FILE *__stream) __attribute__ ((__nothrow__));
extern int feof_unlocked (FILE *__stream) __attribute__ ((__nothrow__)) ;
extern int ferror_unlocked (FILE *__stream) __attribute__ ((__nothrow__)) ;








extern void perror (__const char *__s);






# 1 "/usr/include/bits/sys_errlist.h" 1 3 4
# 27 "/usr/include/bits/sys_errlist.h" 3 4
extern int sys_nerr;
extern __const char *__const sys_errlist[];
# 823 "/usr/include/stdio.h" 2 3 4




extern int fileno (FILE *__stream) __attribute__ ((__nothrow__)) ;




extern int fileno_unlocked (FILE *__stream) __attribute__ ((__nothrow__)) ;
# 842 "/usr/include/stdio.h" 3 4
extern FILE *popen (__const char *__command, __const char *__modes) ;





extern int pclose (FILE *__stream);





extern char *ctermid (char *__s) __attribute__ ((__nothrow__));
# 882 "/usr/include/stdio.h" 3 4
extern void flockfile (FILE *__stream) __attribute__ ((__nothrow__));



extern int ftrylockfile (FILE *__stream) __attribute__ ((__nothrow__)) ;


extern void funlockfile (FILE *__stream) __attribute__ ((__nothrow__));
# 912 "/usr/include/stdio.h" 3 4

# 4 "test.c" 2
void f(const char* str1, const char* str2)
{
 const char* fmt = "Something is: %s, and something another is: %s\n";
 const size_t buff_len = strlen(fmt) + strlen(str1) + strlen(str2) + 1;
 char* buff = (char*)malloc(buff_len);
 sprintf(buff, fmt, "Str1", "str2");

 free(buff);

}

int main()
{
 return 0;
}


-- 
           Summary: Incorrect argument checking for printf: "format not a
                    string literal, argument types not checked", where it
                    can be checked
           Product: gcc
           Version: 4.3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rilium at mail dot ru


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37975

[Bug c/37975] Incorrect argument checking for printf: "format not a string literal, argument types not checked", where it can be checked

[rilium at mail dot ru]

------- Comment #1 from rilium at mail dot ru  2008-10-31 02:11 -------
Created an attachment (id=16593)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16593&action=view)
Preproccessed file test.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37975

[Bug c/37975] Incorrect argument checking for printf: "format not a string literal, argument types not checked", where it can be checked

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2008-10-31 02:13 -------
Also you can change what fmt points to really.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37975

[Bug c/37975] Incorrect argument checking for printf: "format not a string literal, argument types not checked", where it can be checked

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2008-10-31 02:13 -------
C says fmt is not a constant expression. 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37975

[Bug c/37975] Incorrect argument checking for printf: "format not a string literal, argument types not checked", where it can be checked

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2008-10-31 11:40 -------
The format string is not a string literal.  A flow-insensitive warning cannot
be reliably given.


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rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
           Keywords|                            |diagnostic
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37975