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Diffstat (limited to 'src/test/compile-fail/recursion.rs')
| -rw-r--r-- | src/test/compile-fail/recursion.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/test/compile-fail/recursion.rs b/src/test/compile-fail/recursion.rs new file mode 100644 index 00000000000..0fe042b924a --- /dev/null +++ b/src/test/compile-fail/recursion.rs @@ -0,0 +1,34 @@ +// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +enum Nil {Nil} +struct Cons<T> {head:int, tail:T} +trait Dot {fn dot(&self, other:Self) -> int;} +impl Dot for Nil { + fn dot(&self, _:Nil) -> int {0} +} +impl<T:Dot> Dot for Cons<T> { + fn dot(&self, other:Cons<T>) -> int { + self.head * other.head + self.tail.dot(other.tail) + } +} +fn test<T:Dot> (n:int, i:int, first:T, second:T) ->int { + //~^ ERROR: overly deep expansion of inlined function + match n { + 0 => {first.dot(second)} + // Error message should be here. It should be a type error + // to instantiate `test` at a type other than T. (See #4287) + _ => {test (n-1, i+1, Cons {head:2*i+1, tail:first}, Cons{head:i*i, tail:second})} + } +} +pub fn main() { + let n = test(1, 0, Nil, Nil); + println!("{}", n); +} |
