Merge pull request #37173 from brson/stable-next 1.12.1

[stable] Backports for 1.12.1

5 files changed, 147 insertions, 0 deletions

diff --git a/src/test/run-pass/issue-36381.rs b/src/test/run-pass/issue-36381.rs
new file mode 100644
index 00000000000..6cd991bd942
--- /dev/null
+++ b/src/test/run-pass/issue-36381.rs
@@ -0,0 +1,34 @@
+// Copyright 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.
+
+// Regression test for #36381. The trans collector was asserting that
+// there are no projection types, but the `<&str as
+// StreamOnce>::Position` projection contained a late-bound region,
+// and we don't currently normalize in that case until the function is
+// actually invoked.
+
+pub trait StreamOnce {
+    type Position;
+}
+
+impl<'a> StreamOnce for &'a str {
+    type Position = usize;
+}
+
+pub fn parser<F>(_: F) {
+}
+
+fn follow(_: &str) -> <&str as StreamOnce>::Position {
+    panic!()
+}
+
+fn main() {
+    parser(follow);
+}
diff --git a/src/test/run-pass/issue-36744-bitcast-args-if-needed.rs b/src/test/run-pass/issue-36744-bitcast-args-if-needed.rs
new file mode 100644
index 00000000000..1859cc9ca00
--- /dev/null
+++ b/src/test/run-pass/issue-36744-bitcast-args-if-needed.rs
@@ -0,0 +1,32 @@
+// Copyright 2016 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.
+
+// This tests for an ICE (and, if ignored, subsequent LLVM abort) when
+// a lifetime-parametric fn is passed into a context whose expected
+// type has a differing lifetime parameterization.
+
+struct A<'a> {
+    _a: &'a i32,
+}
+
+fn call<T>(s: T, functions: &Vec<for <'n> fn(&'n T)>) {
+    for function in functions {
+        function(&s);
+    }
+}
+
+fn f(a: &A) { println!("a holds {}", a._a); }
+
+fn main() {
+    let a = A { _a: &10 };
+
+    let vec: Vec<for <'u,'v> fn(&'u A<'v>)> = vec![f];
+    call(a, &vec);
+}
diff --git a/src/test/run-pass/issue-36744-without-calls.rs b/src/test/run-pass/issue-36744-without-calls.rs
new file mode 100644
index 00000000000..1766edb06b4
--- /dev/null
+++ b/src/test/run-pass/issue-36744-without-calls.rs
@@ -0,0 +1,22 @@
+// Copyright 2016 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.
+
+// Tests for an LLVM abort when storing a lifetime-parametric fn into
+// context that is expecting one that is not lifetime-parametric
+// (i.e. has no `for <'_>`).
+
+pub struct A<'a>(&'a ());
+pub struct S<T>(T);
+
+pub fn bad<'s>(v: &mut S<fn(A<'s>)>, y: S<for<'b> fn(A<'b>)>) {
+    *v = y;
+}
+
+fn main() {}
diff --git a/src/test/run-pass/issue-36856.rs b/src/test/run-pass/issue-36856.rs
new file mode 100644
index 00000000000..91a0dadd653
--- /dev/null
+++ b/src/test/run-pass/issue-36856.rs
@@ -0,0 +1,24 @@
+// 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.
+
+// Regression test for #36856.
+
+// compile-flags:-g
+
+fn g() -> bool {
+    false
+}
+
+pub fn main() {
+    let a = !g();
+    if a != !g() {
+        panic!();
+    }
+}
diff --git a/src/test/run-pass/issue-36936.rs b/src/test/run-pass/issue-36936.rs
new file mode 100644
index 00000000000..4216e2bb4fe
--- /dev/null
+++ b/src/test/run-pass/issue-36936.rs
@@ -0,0 +1,35 @@
+// Copyright 2016 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.
+
+// check that casts are not being treated as lexprs.
+
+fn main() {
+    let mut a = 0i32;
+    let b = &(a as i32);
+    a = 1;
+    assert!((&a as *const i32) != (b as *const i32));
+    assert_eq!(*b, 0);
+
+    assert_eq!(issue_36936(), 1);
+}
+
+
+struct A(u32);
+
+impl Drop for A {
+    fn drop(&mut self) {
+        self.0 = 0;
+    }
+}
+
+fn issue_36936() -> u32 {
+    let a = &(A(1) as A);
+    a.0
+}