From 2ecce7ccc5d74eb3d6b0ff400b2a19944e2ae51a Mon Sep 17 00:00:00 2001 From: David Wood Date: Thu, 11 Oct 2018 19:36:51 +0200 Subject: Extend lang items to assert correct target. This commit extends the existing lang items functionality to assert that the `#[lang_item]` attribute is only found on the appropriate item for any given lang item. That is, language items representing traits must only ever have their corresponding attribute placed on a trait, for example. --- .../ui/panic-handler/panic-handler-wrong-location.rs | 18 ++++++++++++++++++ .../panic-handler/panic-handler-wrong-location.stderr | 11 +++++++++++ 2 files changed, 29 insertions(+) create mode 100644 src/test/ui/panic-handler/panic-handler-wrong-location.rs create mode 100644 src/test/ui/panic-handler/panic-handler-wrong-location.stderr (limited to 'src/test/ui/panic-handler') diff --git a/src/test/ui/panic-handler/panic-handler-wrong-location.rs b/src/test/ui/panic-handler/panic-handler-wrong-location.rs new file mode 100644 index 00000000000..04e02682bc1 --- /dev/null +++ b/src/test/ui/panic-handler/panic-handler-wrong-location.rs @@ -0,0 +1,18 @@ +// Copyright 2018 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 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// compile-flags:-C panic=abort + +#![no_std] +#![no_main] + +#[panic_handler] +#[no_mangle] +static X: u32 = 42; diff --git a/src/test/ui/panic-handler/panic-handler-wrong-location.stderr b/src/test/ui/panic-handler/panic-handler-wrong-location.stderr new file mode 100644 index 00000000000..f761e26b86e --- /dev/null +++ b/src/test/ui/panic-handler/panic-handler-wrong-location.stderr @@ -0,0 +1,11 @@ +error[E0718]: `panic_impl` language item must be applied to a function + --> $DIR/panic-handler-wrong-location.rs:16:1 + | +LL | #[panic_handler] + | ^^^^^^^^^^^^^^^^ attribute should be applied to a function, not a static item + +error: `#[panic_handler]` function required, but not found + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0718`. -- cgit 1.4.1-3-g733a5