Auto merge of #38093 - mikhail-m1:stack-overflow, r=arielb1

fix stack overflow by enum and cont issue #36163

some paths were skipped while checking for recursion.

I fixed bug reproduces on win64 cargo test. In previous PR #36458 time complexity was exponential in case of linked const values. Now it's linear.

r? @alexcrichton
This commit is contained in:
bors 2016-12-05 02:48:03 +00:00
commit 6bc551a261
2 changed files with 86 additions and 65 deletions

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// Copyright 2012 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.
const A: i32 = Foo::B; //~ ERROR E0265
//~^ NOTE recursion not allowed in constant
enum Foo {
B = A, //~ ERROR E0265
//~^ NOTE recursion not allowed in constant
}
enum Bar {
C = Bar::C, //~ ERROR E0265
//~^ NOTE recursion not allowed in constant
}
const D: i32 = A;
fn main() {}