compat/snprintf.c

   1 /**************************************************************
   2  * Original:
   3  * Patrick Powell Tue Apr 11 09:48:21 PDT 1995
   4  * A bombproof version of doprnt (dopr) included.
   5  * Sigh.  This sort of thing is always nasty do deal with.  Note that
   6  * the version here does not include floating point...
   7  *
   8  * snprintf() is used instead of sprintf() as it does limit checks
   9  * for string length.  This covers a nasty loophole.
  10  *
  11  * The other functions are there to prevent NULL pointers from
  12  * causing nast effects.
  13  *
  14  * More Recently:
  15  *  Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43
  16  *  This was ugly.  It is still ugly.  I opted out of floating point
  17  *  numbers, but the formatter understands just about everything
  18  *  from the normal C string format, at least as far as I can tell from
  19  *  the Solaris 2.5 printf(3S) man page.
  20  *
  21  *  Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1
  22  *    Ok, added some minimal floating point support, which means this
  23  *    probably requires libm on most operating systems.  Don't yet
  24  *    support the exponent (e,E) and sigfig (g,G).  Also, fmtint()
  25  *    was pretty badly broken, it just wasn't being exercised in ways
  26  *    which showed it, so that's been fixed.  Also, formated the code
  27  *    to mutt conventions, and removed dead code left over from the
  28  *    original.  Also, there is now a builtin-test, just compile with:
  29  *           gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm
  30  *    and run snprintf for results.
  31  *
  32  *  Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i
  33  *    The PGP code was using unsigned hexadecimal formats.
  34  *    Unfortunately, unsigned formats simply didn't work.
  35  *
  36  *  Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8
  37  *    The original code assumed that both snprintf() and vsnprintf() were
  38  *    missing.  Some systems only have snprintf() but not vsnprintf(), so
  39  *    the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF.
  40  *
  41  *  Chris Frey <cdfrey@foursquare.net> 2012/09/05
  42  *    Removed varargs.h and all dependency on it.
  43  *
  44  **************************************************************/
  45
  46 #include <config.h>
  47
  48 #if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF)
  49
  50 #include <string.h>
  51 # include <ctype.h>
  52 #include <sys/types.h>
  53
  54 #include <stdarg.h>
  55 #define VA_LOCAL_DECL   va_list ap
  56 #define VA_START(f)     va_start(ap, f)
  57 #define VA_SHIFT(v,t)  ;   /* no-op for ANSI */
  58 #define VA_END          va_end(ap)
  59
  60 /*int snprintf (char *str, size_t count, const char *fmt, ...);*/
  61 /*int vsnprintf (char *str, size_t count, const char *fmt, va_list arg);*/
  62
  63 static void dopr (char *buffer, size_t maxlen, const char *format,
  64                   va_list args);
  65 static void fmtstr (char *buffer, size_t *currlen, size_t maxlen,
  66                     char *value, int flags, int min, int max);
  67 static void fmtint (char *buffer, size_t *currlen, size_t maxlen,
  68                     long value, int base, int min, int max, int flags);
  69 static void fmtfp (char *buffer, size_t *currlen, size_t maxlen,
  70                    long double fvalue, int min, int max, int flags);
  71 static void dopr_outch (char *buffer, size_t *currlen, size_t maxlen, char c );
  72
  73 /*
  74  * dopr(): poor man's version of doprintf
  75  */
  76
  77 /* format read states */
  78 #define DP_S_DEFAULT 0
  79 #define DP_S_FLAGS   1
  80 #define DP_S_MIN     2
  81 #define DP_S_DOT     3
  82 #define DP_S_MAX     4
  83 #define DP_S_MOD     5
  84 #define DP_S_CONV    6
  85 #define DP_S_DONE    7
  86
  87 /* format flags - Bits */
  88 #define DP_F_MINUS      (1 << 0)
  89 #define DP_F_PLUS       (1 << 1)
  90 #define DP_F_SPACE      (1 << 2)
  91 #define DP_F_NUM        (1 << 3)
  92 #define DP_F_ZERO       (1 << 4)
  93 #define DP_F_UP         (1 << 5)
  94 #define DP_F_UNSIGNED   (1 << 6)
  95
  96 /* Conversion Flags */
  97 #define DP_C_SHORT   1
  98 #define DP_C_LONG    2
  99 #define DP_C_LDOUBLE 3
 100
 101 #define char_to_int(p) (p - '0')
 102 #define MAX(p,q) ((p >= q) ? p : q)
 103
 104 static void dopr (char *buffer, size_t maxlen, const char *format, va_list args)
 105 {
 106   char ch;
 107   long value;
 108   long double fvalue;
 109   char *strvalue;
 110   int min;
 111   int max;
 112   int state;
 113   int flags;
 114   int cflags;
 115   size_t currlen;
 116
 117   state = DP_S_DEFAULT;
 118   currlen = flags = cflags = min = 0;
 119   max = -1;
 120   ch = *format++;
 121
 122   while (state != DP_S_DONE)
 123   {
 124     if ((ch == '\0') || (currlen >= maxlen))
 125       state = DP_S_DONE;
 126
 127     switch(state)
 128     {
 129     case DP_S_DEFAULT:
 130       if (ch == '%')
 131         state = DP_S_FLAGS;
 132       else
 133         dopr_outch (buffer, &currlen, maxlen, ch);
 134       ch = *format++;
 135       break;
 136     case DP_S_FLAGS:
 137       switch (ch)
 138       {
 139       case '-':
 140         flags |= DP_F_MINUS;
 141         ch = *format++;
 142         break;
 143       case '+':
 144         flags |= DP_F_PLUS;
 145         ch = *format++;
 146         break;
 147       case ' ':
 148         flags |= DP_F_SPACE;
 149         ch = *format++;
 150         break;
 151       case '#':
 152         flags |= DP_F_NUM;
 153         ch = *format++;
 154         break;
 155       case '0':
 156         flags |= DP_F_ZERO;
 157         ch = *format++;
 158         break;
 159       default:
 160         state = DP_S_MIN;
 161         break;
 162       }
 163       break;
 164     case DP_S_MIN:
 165       if (isdigit((unsigned char)ch))
 166       {
 167         min = 10*min + char_to_int (ch);
 168         ch = *format++;
 169       }
 170       else if (ch == '*')
 171       {
 172         min = va_arg (args, int);
 173         ch = *format++;
 174         state = DP_S_DOT;
 175       }
 176       else
 177         state = DP_S_DOT;
 178       break;
 179     case DP_S_DOT:
 180       if (ch == '.')
 181       {
 182         state = DP_S_MAX;
 183         ch = *format++;
 184       }
 185       else
 186         state = DP_S_MOD;
 187       break;
 188     case DP_S_MAX:
 189       if (isdigit((unsigned char)ch))
 190       {
 191         if (max < 0)
 192           max = 0;
 193         max = 10*max + char_to_int (ch);
 194         ch = *format++;
 195       }
 196       else if (ch == '*')
 197       {
 198         max = va_arg (args, int);
 199         ch = *format++;
 200         state = DP_S_MOD;
 201       }
 202       else
 203         state = DP_S_MOD;
 204       break;
 205     case DP_S_MOD:
 206       /* Currently, we don't support Long Long, bummer */
 207       switch (ch)
 208       {
 209       case 'h':
 210         cflags = DP_C_SHORT;
 211         ch = *format++;
 212         break;
 213       case 'l':
 214         cflags = DP_C_LONG;
 215         ch = *format++;
 216         break;
 217       case 'L':
 218         cflags = DP_C_LDOUBLE;
 219         ch = *format++;
 220         break;
 221       default:
 222         break;
 223       }
 224       state = DP_S_CONV;
 225       break;
 226     case DP_S_CONV:
 227       switch (ch)
 228       {
 229       case 'd':
 230       case 'i':
 231         if (cflags == DP_C_SHORT)
 232           value = va_arg (args, int);
 233         else if (cflags == DP_C_LONG)
 234           value = va_arg (args, long int);
 235         else
 236           value = va_arg (args, int);
 237         fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags);
 238         break;
 239       case 'o':
 240         flags |= DP_F_UNSIGNED;
 241         if (cflags == DP_C_SHORT)
 242           value = va_arg (args, unsigned int);
 243         else if (cflags == DP_C_LONG)
 244           value = va_arg (args, unsigned long int);
 245         else
 246           value = va_arg (args, unsigned int);
 247         fmtint (buffer, &currlen, maxlen, value, 8, min, max, flags);
 248         break;
 249       case 'u':
 250         flags |= DP_F_UNSIGNED;
 251         if (cflags == DP_C_SHORT)
 252           value = va_arg (args, unsigned int);
 253         else if (cflags == DP_C_LONG)
 254           value = va_arg (args, unsigned long int);
 255         else
 256           value = va_arg (args, unsigned int);
 257         fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags);
 258         break;
 259       case 'X':
 260         flags |= DP_F_UP;
 261       case 'x':
 262         flags |= DP_F_UNSIGNED;
 263         if (cflags == DP_C_SHORT)
 264           value = va_arg (args, unsigned int);
 265         else if (cflags == DP_C_LONG)
 266           value = va_arg (args, unsigned long int);
 267         else
 268           value = va_arg (args, unsigned int);
 269         fmtint (buffer, &currlen, maxlen, value, 16, min, max, flags);
 270         break;
 271       case 'f':
 272         if (cflags == DP_C_LDOUBLE)
 273           fvalue = va_arg (args, long double);
 274         else
 275           fvalue = va_arg (args, double);
 276         /* um, floating point? */
 277         fmtfp (buffer, &currlen, maxlen, fvalue, min, max, flags);
 278         break;
 279       case 'E':
 280         flags |= DP_F_UP;
 281       case 'e':
 282         if (cflags == DP_C_LDOUBLE)
 283           fvalue = va_arg (args, long double);
 284         else
 285           fvalue = va_arg (args, double);
 286         break;
 287       case 'G':
 288         flags |= DP_F_UP;
 289       case 'g':
 290         if (cflags == DP_C_LDOUBLE)
 291           fvalue = va_arg (args, long double);
 292         else
 293           fvalue = va_arg (args, double);
 294         break;
 295       case 'c':
 296         dopr_outch (buffer, &currlen, maxlen, va_arg (args, int));
 297         break;
 298       case 's':
 299         strvalue = va_arg (args, char *);
 300         if (max < 0)
 301           max = maxlen; /* ie, no max */
 302         fmtstr (buffer, &currlen, maxlen, strvalue, flags, min, max);
 303         break;
 304       case 'p':
 305         strvalue = va_arg (args, void *);
 306         fmtint (buffer, &currlen, maxlen, (long) strvalue, 16, min, max, flags);
 307         break;
 308       case 'n':
 309         if (cflags == DP_C_SHORT)
 310         {
 311           short int *num;
 312           num = va_arg (args, short int *);
 313           *num = currlen;
 314         }
 315         else if (cflags == DP_C_LONG)
 316         {
 317           long int *num;
 318           num = va_arg (args, long int *);
 319           *num = currlen;
 320         }
 321         else
 322         {
 323           int *num;
 324           num = va_arg (args, int *);
 325           *num = currlen;
 326         }
 327         break;
 328       case '%':
 329         dopr_outch (buffer, &currlen, maxlen, ch);
 330         break;
 331       case 'w':
 332         /* not supported yet, treat as next char */
 333         ch = *format++;
 334         break;
 335       default:
 336         /* Unknown, skip */
 337         break;
 338       }
 339       ch = *format++;
 340       state = DP_S_DEFAULT;
 341       flags = cflags = min = 0;
 342       max = -1;
 343       break;
 344     case DP_S_DONE:
 345       break;
 346     default:
 347       /* hmm? */
 348       break; /* some picky compilers need this */
 349     }
 350   }
 351   if (currlen < maxlen - 1)
 352     buffer[currlen] = '\0';
 353   else
 354     buffer[maxlen - 1] = '\0';
 355 }
 356
 357 static void fmtstr (char *buffer, size_t *currlen, size_t maxlen,
 358                     char *value, int flags, int min, int max)
 359 {
 360   int padlen, strln;     /* amount to pad */
 361   int cnt = 0;
 362
 363   if (value == 0)
 364   {
 365     value = "<NULL>";
 366   }
 367
 368   for (strln = 0; value[strln]; ++strln); /* strlen */
 369   padlen = min - strln;
 370   if (padlen < 0)
 371     padlen = 0;
 372   if (flags & DP_F_MINUS)
 373     padlen = -padlen; /* Left Justify */
 374
 375   while ((padlen > 0) && (cnt < max))
 376   {
 377     dopr_outch (buffer, currlen, maxlen, ' ');
 378     --padlen;
 379     ++cnt;
 380   }
 381   while (*value && (cnt < max))
 382   {
 383     dopr_outch (buffer, currlen, maxlen, *value++);
 384     ++cnt;
 385   }
 386   while ((padlen < 0) && (cnt < max))
 387   {
 388     dopr_outch (buffer, currlen, maxlen, ' ');
 389     ++padlen;
 390     ++cnt;
 391   }
 392 }
 393
 394 /* Have to handle DP_F_NUM (ie 0x and 0 alternates) */
 395
 396 static void fmtint (char *buffer, size_t *currlen, size_t maxlen,
 397                     long value, int base, int min, int max, int flags)
 398 {
 399   int signvalue = 0;
 400   unsigned long uvalue;
 401   char convert[20];
 402   int place = 0;
 403   int spadlen = 0; /* amount to space pad */
 404   int zpadlen = 0; /* amount to zero pad */
 405   int caps = 0;
 406
 407   if (max < 0)
 408     max = 0;
 409
 410   uvalue = value;
 411
 412   if(!(flags & DP_F_UNSIGNED))
 413   {
 414     if( value < 0 ) {
 415       signvalue = '-';
 416       uvalue = -value;
 417     }
 418     else
 419       if (flags & DP_F_PLUS)  /* Do a sign (+/i) */
 420         signvalue = '+';
 421     else
 422       if (flags & DP_F_SPACE)
 423         signvalue = ' ';
 424   }
 425
 426   if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
 427
 428   do {
 429     convert[place++] =
 430       (caps? "0123456789ABCDEF":"0123456789abcdef")
 431       [uvalue % (unsigned)base  ];
 432     uvalue = (uvalue / (unsigned)base );
 433   } while(uvalue && (place < 20));
 434   if (place == 20) place--;
 435   convert[place] = 0;
 436
 437   zpadlen = max - place;
 438   spadlen = min - MAX (max, place) - (signvalue ? 1 : 0);
 439   if (zpadlen < 0) zpadlen = 0;
 440   if (spadlen < 0) spadlen = 0;
 441   if (flags & DP_F_ZERO)
 442   {
 443     zpadlen = MAX(zpadlen, spadlen);
 444     spadlen = 0;
 445   }
 446   if (flags & DP_F_MINUS)
 447     spadlen = -spadlen; /* Left Justifty */
 448
 449 #ifdef DEBUG_SNPRINTF
 450   dprint (1, (debugfile, "zpad: %d, spad: %d, min: %d, max: %d, place: %d\n",
 451       zpadlen, spadlen, min, max, place));
 452 #endif
 453
 454   /* Spaces */
 455   while (spadlen > 0)
 456   {
 457     dopr_outch (buffer, currlen, maxlen, ' ');
 458     --spadlen;
 459   }
 460
 461   /* Sign */
 462   if (signvalue)
 463     dopr_outch (buffer, currlen, maxlen, signvalue);
 464
 465   /* Zeros */
 466   if (zpadlen > 0)
 467   {
 468     while (zpadlen > 0)
 469     {
 470       dopr_outch (buffer, currlen, maxlen, '0');
 471       --zpadlen;
 472     }
 473   }
 474
 475   /* Digits */
 476   while (place > 0)
 477     dopr_outch (buffer, currlen, maxlen, convert[--place]);
 478
 479   /* Left Justified spaces */
 480   while (spadlen < 0) {
 481     dopr_outch (buffer, currlen, maxlen, ' ');
 482     ++spadlen;
 483   }
 484 }
 485
 486 static long double abs_val (long double value)
 487 {
 488   long double result = value;
 489
 490   if (value < 0)
 491     result = -value;
 492
 493   return result;
 494 }
 495
 496 static long double pow10 (int exp)
 497 {
 498   long double result = 1;
 499
 500   while (exp)
 501   {
 502     result *= 10;
 503     exp--;
 504   }
 505
 506   return result;
 507 }
 508
 509 static long round (long double value)
 510 {
 511   long intpart;
 512
 513   intpart = value;
 514   value = value - intpart;
 515   if (value >= 0.5)
 516     intpart++;
 517
 518   return intpart;
 519 }
 520
 521 static void fmtfp (char *buffer, size_t *currlen, size_t maxlen,
 522                    long double fvalue, int min, int max, int flags)
 523 {
 524   int signvalue = 0;
 525   long double ufvalue;
 526   char iconvert[20];
 527   char fconvert[20];
 528   int iplace = 0;
 529   int fplace = 0;
 530   int padlen = 0; /* amount to pad */
 531   int zpadlen = 0;
 532   int caps = 0;
 533   long intpart;
 534   long fracpart;
 535
 536   /*
 537    * AIX manpage says the default is 0, but Solaris says the default
 538    * is 6, and sprintf on AIX defaults to 6
 539    */
 540   if (max < 0)
 541     max = 6;
 542
 543   ufvalue = abs_val (fvalue);
 544
 545   if (fvalue < 0)
 546     signvalue = '-';
 547   else
 548     if (flags & DP_F_PLUS)  /* Do a sign (+/i) */
 549       signvalue = '+';
 550     else
 551       if (flags & DP_F_SPACE)
 552         signvalue = ' ';
 553
 554 #if 0
 555   if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
 556 #endif
 557
 558   intpart = ufvalue;
 559
 560   /*
 561    * Sorry, we only support 9 digits past the decimal because of our
 562    * conversion method
 563    */
 564   if (max > 9)
 565     max = 9;
 566
 567   /* We "cheat" by converting the fractional part to integer by
 568    * multiplying by a factor of 10
 569    */
 570   fracpart = round ((pow10 (max)) * (ufvalue - intpart));
 571
 572   if (fracpart >= pow10 (max))
 573   {
 574     intpart++;
 575     fracpart -= pow10 (max);
 576   }
 577
 578 #ifdef DEBUG_SNPRINTF
 579   dprint (1, (debugfile, "fmtfp: %f =? %d.%d\n", fvalue, intpart, fracpart));
 580 #endif
 581
 582   /* Convert integer part */
 583   do {
 584     iconvert[iplace++] =
 585       (caps? "0123456789ABCDEF":"0123456789abcdef")[intpart % 10];
 586     intpart = (intpart / 10);
 587   } while(intpart && (iplace < 20));
 588   if (iplace == 20) iplace--;
 589   iconvert[iplace] = 0;
 590
 591   /* Convert fractional part */
 592   do {
 593     fconvert[fplace++] =
 594       (caps? "0123456789ABCDEF":"0123456789abcdef")[fracpart % 10];
 595     fracpart = (fracpart / 10);
 596   } while(fracpart && (fplace < 20));
 597   if (fplace == 20) fplace--;
 598   fconvert[fplace] = 0;
 599
 600   /* -1 for decimal point, another -1 if we are printing a sign */
 601   padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
 602   zpadlen = max - fplace;
 603   if (zpadlen < 0)
 604     zpadlen = 0;
 605   if (padlen < 0)
 606     padlen = 0;
 607   if (flags & DP_F_MINUS)
 608     padlen = -padlen; /* Left Justifty */
 609
 610   if ((flags & DP_F_ZERO) && (padlen > 0))
 611   {
 612     if (signvalue)
 613     {
 614       dopr_outch (buffer, currlen, maxlen, signvalue);
 615       --padlen;
 616       signvalue = 0;
 617     }
 618     while (padlen > 0)
 619     {
 620       dopr_outch (buffer, currlen, maxlen, '0');
 621       --padlen;
 622     }
 623   }
 624   while (padlen > 0)
 625   {
 626     dopr_outch (buffer, currlen, maxlen, ' ');
 627     --padlen;
 628   }
 629   if (signvalue)
 630     dopr_outch (buffer, currlen, maxlen, signvalue);
 631
 632   while (iplace > 0)
 633     dopr_outch (buffer, currlen, maxlen, iconvert[--iplace]);
 634
 635   /*
 636    * Decimal point.  This should probably use locale to find the correct
 637    * char to print out.
 638    */
 639   dopr_outch (buffer, currlen, maxlen, '.');
 640
 641   while (fplace > 0)
 642     dopr_outch (buffer, currlen, maxlen, fconvert[--fplace]);
 643
 644   while (zpadlen > 0)
 645   {
 646     dopr_outch (buffer, currlen, maxlen, '0');
 647     --zpadlen;
 648   }
 649
 650   while (padlen < 0)
 651   {
 652     dopr_outch (buffer, currlen, maxlen, ' ');
 653     ++padlen;
 654   }
 655 }
 656
 657 static void dopr_outch (char *buffer, size_t *currlen, size_t maxlen, char c)
 658 {
 659   if (*currlen < maxlen)
 660     buffer[(*currlen)++] = c;
 661 }
 662 #endif /* !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) */
 663
 664 #ifndef HAVE_VSNPRINTF
 665 int mutt_vsnprintf (char *str, size_t count, const char *fmt, va_list args)
 666 {
 667   str[0] = 0;
 668   dopr(str, count, fmt, args);
 669   return(strlen(str));
 670 }
 671 #endif /* !HAVE_VSNPRINTF */
 672
 673 #ifndef HAVE_SNPRINTF
 674 int mutt_snprintf (char *str,size_t count,const char *fmt,...)
 675 {
 676   VA_LOCAL_DECL;
 677
 678   VA_START (fmt);
 679   VA_SHIFT (str, char *);
 680   VA_SHIFT (count, size_t );
 681   VA_SHIFT (fmt, char *);
 682   (void) mutt_vsnprintf(str, count, fmt, ap);
 683   VA_END;
 684   return(strlen(str));
 685 }
 686
 687 #ifdef TEST_SNPRINTF
 688 #ifndef LONG_STRING
 689 #define LONG_STRING 1024
 690 #endif
 691 int main (void)
 692 {
 693   char buf1[LONG_STRING];
 694   char buf2[LONG_STRING];
 695   char *fp_fmt[] = {
 696     "%-1.5f",
 697     "%1.5f",
 698     "%123.9f",
 699     "%10.5f",
 700     "% 10.5f",
 701     "%+22.9f",
 702     "%+4.9f",
 703     "%01.3f",
 704     "%4f",
 705     "%3.1f",
 706     "%3.2f",
 707     NULL
 708   };
 709   double fp_nums[] = { -1.5, 134.21, 91340.2, 341.1234, 0203.9, 0.96, 0.996,
 710     0.9996, 1.996, 4.136, 0};
 711   char *int_fmt[] = {
 712     "%-1.5d",
 713     "%1.5d",
 714     "%123.9d",
 715     "%5.5d",
 716     "%10.5d",
 717     "% 10.5d",
 718     "%+22.33d",
 719     "%01.3d",
 720     "%4d",
 721     NULL
 722   };
 723   long int_nums[] = { -1, 134, 91340, 341, 0203, 0};
 724   int x, y;
 725   int fail = 0;
 726   int num = 0;
 727
 728   printf ("Testing snprintf format codes against system sprintf...\n");
 729
 730   for (x = 0; fp_fmt[x] != NULL ; x++)
 731     for (y = 0; fp_nums[y] != 0 ; y++)
 732     {
 733       mutt_snprintf (buf1, sizeof (buf1), fp_fmt[x], fp_nums[y]);
 734       sprintf (buf2, fp_fmt[x], fp_nums[y]);
 735       if (strcmp (buf1, buf2))
 736       {
 737         printf("snprintf doesn't match Format: %s\n\tsnprintf = %s\n\tsprintf  = %s\n",
 738             fp_fmt[x], buf1, buf2);
 739         fail++;
 740       }
 741       num++;
 742     }
 743
 744   for (x = 0; int_fmt[x] != NULL ; x++)
 745     for (y = 0; int_nums[y] != 0 ; y++)
 746     {
 747       mutt_snprintf (buf1, sizeof (buf1), int_fmt[x], int_nums[y]);
 748       sprintf (buf2, int_fmt[x], int_nums[y]);
 749       if (strcmp (buf1, buf2))
 750       {
 751         printf("snprintf doesn't match Format: %s\n\tsnprintf = %s\n\tsprintf  = %s\n",
 752             int_fmt[x], buf1, buf2);
 753         fail++;
 754       }
 755       num++;
 756     }
 757   printf ("%d tests failed out of %d.\n", fail, num);
 758 }
 759 #endif /* SNPRINTF_TEST */
 760
 761 #endif /* !HAVE_SNPRINTF */