[Bugzilla] [Bug 15442] Stéphane MOTTELET has commented the bug

[bugzilla.admin at scilab.org]

http://bugzilla.scilab.org/show_bug.cgi?id=15442
--------- Bug Summary -----------
printf cannot handle uint64 integers greater than 2^32-1

---------- Changed by ------------
stephane.mottelet at utc.fr

---------- What changed ----------

--- Comment #10 from Stéphane MOTTELET <stephane.mottelet at utc.fr> ---
Under Linux, printf is anyway buggy, as the following code x=uint64(2^32-1) 

x=uint64(2^32)
printf("%u\n",x)
printf("%lu\n",x)
printf("%d\n",x)
printf("%ld\n",x)

displays

0
4294967296
-2147483648
2147483648

i.e. OK (by which miracle) for %lu but erroneous for %d and %ld.

To me the reference behavior (and the one obtained in Scilab after the proposed patch) is the one of the following C code :

#include <stdio.h>
int main()
{
   unsigned long int x=4294967296;
   printf("%u\n",x);
   printf("%lu\n",x);
   printf("%d\n",x);
   printf("%ld\n",x);
   return 0;
}

which outputs, under all operating systems

0
4294967296
0
4294967296

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