EGCS-Mingw32 compiler has a bug.

["Á¶¿µ¿í" <hyukjo at sigma dot chungnam dot ac dot kr>]

Hello.

I found a bug in EGCS-Mingw32 GCC compiler version 1.1.1.

This compiler does not support correctly 64-bit integer(long long) in scanf/printf series function.

 

I've tested below program in my PII-300 with EGCS-Mingw32 compiler and SunSparc Enterprise 3000 with gcc compiler in Unix 4.0.

 

This program is printing Mersenne numbers.

 

#include <stdio.h>

 

int main()
{
 unsigned long long m=1;
 int i;
 for (i=1;i<65;i++) {
  printf("M%d = %llu\n",i,m);
  m<<=1;
  m++;
 }
 return 0;
}

 

Please compare below results carefully.

The results of PII-300 with EGCS-Mingw32 compiler.

 

M1 = 1
M2 = 3
M3 = 7
M4 = 15
M5 = 31
M6 = 63
M7 = 127
M8 = 255
M9 = 511
M10 = 1023
M11 = 2047
M12 = 4095
M13 = 8191
M14 = 16383
M15 = 32767
M16 = 65535
M17 = 131071
M18 = 262143
M19 = 524287
M20 = 1048575
M21 = 2097151
M22 = 4194303
M23 = 8388607
M24 = 16777215
M25 = 33554431
M26 = 67108863
M27 = 134217727
M28 = 268435455
M29 = 536870911
M30 = 1073741823
M31 = 2147483647
M32 = 4294967295
M33 = 4294967295
M34 = 4294967295
M35 = 4294967295
M36 = 4294967295
M37 = 4294967295
M38 = 4294967295
M39 = 4294967295
M40 = 4294967295
M41 = 4294967295
M42 = 4294967295
M43 = 4294967295
M44 = 4294967295
M45 = 4294967295
M46 = 4294967295
M47 = 4294967295
M48 = 4294967295
M49 = 4294967295
M50 = 4294967295
M51 = 4294967295
M52 = 4294967295
M53 = 4294967295
M54 = 4294967295
M55 = 4294967295
M56 = 4294967295
M57 = 4294967295
M58 = 4294967295
M59 = 4294967295
M60 = 4294967295
M61 = 4294967295
M62 = 4294967295
M63 = 4294967295
M64 = 4294967295

The results of SunSparc Enterprise 3000 with Unix 4.0.

 

M1 = 1
M2 = 3
M3 = 7
M4 = 15
M5 = 31
M6 = 63
M7 = 127
M8 = 255
M9 = 511
M10 = 1023
M11 = 2047
M12 = 4095
M13 = 8191
M14 = 16383
M15 = 32767
M16 = 65535
M17 = 131071
M18 = 262143
M19 = 524287
M20 = 1048575
M21 = 2097151
M22 = 4194303
M23 = 8388607
M24 = 16777215
M25 = 33554431
M26 = 67108863
M27 = 134217727
M28 = 268435455
M29 = 536870911
M30 = 1073741823
M31 = 2147483647
M32 = 4294967295
M33 = 8589934591
M34 = 17179869183
M35 = 34359738367
M36 = 68719476735
M37 = 137438953471
M38 = 274877906943
M39 = 549755813887
M40 = 1099511627775
M41 = 2199023255551
M42 = 4398046511103
M43 = 8796093022207
M44 = 17592186044415
M45 = 35184372088831
M46 = 70368744177663
M47 = 140737488355327
M48 = 281474976710655
M49 = 562949953421311
M50 = 1125899906842623
M51 = 2251799813685247
M52 = 4503599627370495
M53 = 9007199254740991
M54 = 18014398509481983
M55 = 36028797018963967
M56 = 72057594037927935
M57 = 144115188075855871
M58 = 288230376151711743
M59 = 576460752303423487
M60 = 1152921504606846975
M61 = 2305843009213693951
M62 = 4611686018427387903
M63 = 9223372036854775807
M64 = 18446744073709551615

EGCS-Ming32 compiler does not return correct results.

Please correct that bug next version.

 

Jo Yeong Uk.