HI! A test attached is a snippet code from a nimrod compiler. Currenly
tcc fails to compile it rigth.
#include
typedef long long int NI64;
int main()
{
NI64 res = 0;
printf("Test for comparing a INT64 values: ");
if (res < -2147483648LL) {
printf("Error: 0 < -2147483648\n");
return
By replacing a -2147483648 with a -2147483647 I can succesfully build
a working nim compiler. But this is not so good...
2015-01-04 12:45 GMT+03:00, Sergey Korshunoff :
> HI! A test attached is a snippet code from a nimrod compiler. Currenly
> tcc fails to compile it rigth.
__
Le dimanche 4 janvier 2015, 19:18:34 Sergey Korshunoff a écrit :
> By replacing a -2147483648 with a -2147483647 I can succesfully build
> a working nim compiler. But this is not so good...
The bug is in tccpp.c parse_number. The function tries to guess what should be
the size and sign of the lit
It is possible to correct a case for -2147483648 ? A code generated by
tcc and gcc is attached.
2015-01-04 19:18 GMT+03:00, Sergey Korshunoff :
> By replacing a -2147483648 with a -2147483647 I can succesfully build
> a working nim compiler. But this is not so good...
>
> 2015-01-04 12:45 GMT+03:
There is another approach: assume the constant is negative by default.
This is the method used in nimrod to scan a constants:
lib/pure/parseutils.nim(rawparse)
proc rawParseInt(s: string, b: var BiggestInt, start: int = 0): int =
var
sign: BiggestInt = -1 # minus by defaul
