Bash Version: 3.2
Patch Level: 13
Release Status: release
Description:
$ echo $((4000000000*4000000000)
-2446744073709551616
Repeat-By:
Do some arithmetic in bash $((....)).
If the numbers are out of range, the output will be wrong in
all sorts of interesting ways. No error message is given.
Fix:
Arbitrary-precision maths would be nice. But at least, could we
have an error message if an overflow occurs?
The man page says:
"Evaluation is done in fixed-width integers with no
check for overflow..."
but I'd suggest this represents a bug, not a feature.
Regards,
Richard
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