2007/3/28, Andreas Schwab <[EMAIL PROTECTED]> wrote:
"J.C. Pizarro" <[EMAIL PROTECTED]> writes: > Brief summary, there are 3 bugs: None of them are bugs in the compiler, only in your program.
Sure? My program is a testsuite of why the long type doesn't work, no why my program doesn't work.
> 1. Error and Warning in assignment of a long constant (with L letter) > (it's not true that a = 1410065408, high(a) = 0x00000000). The constant overflows the range of long, causing undefined behaviour.
The range of long should be -(2^63) .. +((2^63)-1). There is not reason for an undefined behaviour.
> 2. Warning in shifts << & >> of a long variable (i don't know if there > is an error). A shift count greater than or equal to the width of a type causes undefined behaviour.
For shifts, the range of a long type should be 0 .. 64 (65 values), not 0 .. 31. There is not reason for an undefined behaviour. There is another future strange thing, the range -63 .. -1, 0, 1 .. 64. can be specially reversible, the reverse of << is >>, and viceversa. Hahahaha, is it useful? I don't know.
> 3. Error in multiply of long variables. (it's not true that c = -1486618624). %ld is not the correct format for a value of type long long, causing undefined behaviour.
%ld means long format for %d, is it wrong? Thanks, bye friend ;)
