Re: Autoconf manual's coverage of signed integer overflow & portability

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Andrew Pinski writes:
 > 
 > This will always cause a trap on x86, even with -fwrapv so really
 > -fwrapv has a bug on x86.  I will file this bug sometime later
 > tomorrow.  Oh and fixing this bug will actually slow down users
 > of -fwrapv even more than what it is currently does because
 > you can no longer use the div instruction.

Actually, you can still use div, but it's rather tricky.  There's some
code in libgcj to handle this very situation.

Andrew.


_______________________________________________
Autoconf mailing list
Autoconf@xxxxxxx
http://lists.gnu.org/mailman/listinfo/autoconf

[Index of Archives]     [GCC Help]     [Kernel Discussion]     [RPM Discussion]     [Red Hat Development]     [Yosemite News]     [Linux USB]     [Samba]

  Powered by Linux