Auto merge of #36304 - TimNN:fix-36299, r=eddyb

re-add accidentally removed line in wfcheck

Fixes #36299, introduced in #36119.

r? @eddyb

2 files changed, 16 insertions, 0 deletions

diff --git a/src/librustc_typeck/check/wfcheck.rs b/src/librustc_typeck/check/wfcheck.rs
index 6e87c29c4b3..c61d3e1a876 100644
--- a/src/librustc_typeck/check/wfcheck.rs
+++ b/src/librustc_typeck/check/wfcheck.rs
@@ -480,6 +480,7 @@ impl<'ccx, 'gcx> CheckTypeWellFormedVisitor<'ccx, 'gcx> {
                 (ast_generics.lifetimes[index].lifetime.span,
                  ast_generics.lifetimes[index].lifetime.name)
             } else {
+                let index = index - ast_generics.lifetimes.len();
                 (ast_generics.ty_params[index].span,
                  ast_generics.ty_params[index].name)
             };
diff --git a/src/test/compile-fail/issue-36299.rs b/src/test/compile-fail/issue-36299.rs
new file mode 100644
index 00000000000..88ac74cb09e
--- /dev/null
+++ b/src/test/compile-fail/issue-36299.rs
@@ -0,0 +1,15 @@
+// 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.
+
+struct Foo<'a, A> {}
+//~^ ERROR parameter `'a` is never used
+//~| ERROR parameter `A` is never used
+
+fn main() {}