> Old-Status: Open
> Status: Bogus
> <?php
> $var=-1073741824;
> #####^ Here!
>
> $var*=2;$var*=2;
> var_dump($var);
> ?>
> It will print out "int(0)".
> but I believe it should print out"int(-2147483648)" or
"float(-2147483648)" like this program:
IMO the output is wrong indeed. On integer overflow, it should be
automatically converted to float.
In zend_operators.c, line 614. there is only a check for integer addition
overflow towards POSITIVE infinity, NOT the other way around.
Same story with substraction and multiplication (the latter one being the
issue here.)
I'll submit a patch later today.
Jeroen
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