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EnumSet assertion: better error message.

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This commit is contained in:
Simon Sapin 2014-11-06 15:20:36 -08:00
parent 1fdb759527
commit a22772d6a6
1 changed files with 3 additions and 1 deletions
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4
src/libcollections/enum_set.rs
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@ -52,8 +52,10 @@ pub trait CLike {
} }
fn bit<E:CLike>(e: &E) -> uint { fn bit<E:CLike>(e: &E) -> uint {
use core::uint;
let value = e.to_uint(); let value = e.to_uint();
assert!(value < ::core::uint::BITS); assert!(value < uint::BITS,
"EnumSet only supports up to {} variants.", uint::BITS - 1);
1 << value 1 << value
} }