On Monday, 18 September 2017 at 22:32:28 UTC, Dennis Cote wrote:
On Monday, 18 September 2017 at 13:25:55 UTC, Andrei
Alexandrescu wrote:
For the record, with the help of std.experimental.checkedint,
the change that fixes the code would be:
malloc(width * height * 4) ==> malloc((checked(width) * height
* 4).get)
That aborts the application with a message if a multiplication
overflows.
Can it do something other than abort? Can it throw an overflow
exception that could be caught to report the error and continue?
Yes. Use one of the provided hooks (e.g. [1][2][3]) or write one
that fits your use case.
[1]
https://dlang.org/phobos/std_experimental_checkedint.html#Abort
[2]
https://dlang.org/phobos/std_experimental_checkedint.html#Throw
[3] https://dlang.org/phobos/std_experimental_checkedint.html#Warn
