OpenEuphoria

Re: Possible bug (sorry if it's a repeat)

• Posted by Robert Craig <rds at ATTCANADA.NET> Jun 29, 1999
• 486 views

Jeffrey Fielding writes:
> constant MAX_INTEGER = 1073741823
> ...
> integer x, y
> x = MAX_INTEGER
> x += 1 -- No error
> x = MAX_INTEGER
> x = x + 1-- No error
> y = x -- No error

Yes, you've found a bug. Thanks.
It's trivial to fix. I'll do it for the next major release
(probably not the Linux pre-alpha - it's coming in a day or two.)

The code that adds the constant value 1 to an integer
(via += or the regular assignment)  tests for, but fails to
report, the type_check failure. If you add a different
number, or you subtract from the minimum integer,
it will be caught. Assigning y = x doesn't catch the error
because the compiler "knows" that x is an integer, so
no type check is performed.

Regards,
     Rob Craig
     Rapid Deployment Software
     http://members.aol.com/FilesEu/