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author | Cldfire <cldfire@3grid.net> | 2017-11-06 21:40:21 -0500 |
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committer | Esteban Küber <esteban@kuber.com.ar> | 2018-01-25 22:36:48 -0800 |
commit | c39ad4b145f9eee71a5e6b52f9d10acc7e43ce0d (patch) | |
tree | 563746b6703991bf864b5bc07e047a7606d47626 | |
parent | 4cf26f8a133039bfeb5b9f684df9f547278db206 (diff) | |
download | rust-c39ad4b145f9eee71a5e6b52f9d10acc7e43ce0d.tar.gz |
Correctly format `extern crate` conflict resolution help
4 files changed, 31 insertions, 3 deletions
diff --git a/src/librustc_resolve/lib.rs b/src/librustc_resolve/lib.rs index 55c7e5f3924..6fcdb1d651f 100644 --- a/src/librustc_resolve/lib.rs +++ b/src/librustc_resolve/lib.rs @@ -3980,14 +3980,14 @@ impl<'a> Resolver<'a> { container)); err.span_label(span, format!("`{}` re{} here", name, new_participle)); - if old_binding.span != syntax_pos::DUMMY_SP { + if old_binding.span != DUMMY_SP { err.span_label(self.session.codemap().def_span(old_binding.span), format!("previous {} of the {} `{}` here", old_noun, old_kind, name)); } // See https://github.com/rust-lang/rust/issues/32354 if old_binding.is_import() || new_binding.is_import() { - let binding = if new_binding.is_import() { + let binding = if new_binding.is_import() && new_binding.span != DUMMY_SP { new_binding } else { old_binding diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs index 8213d604b91..a7977d5235d 100644 --- a/src/libsyntax/parse/parser.rs +++ b/src/libsyntax/parse/parser.rs @@ -6128,9 +6128,11 @@ impl<'a> Parser<'a> { } else { (None, crate_name) }; - self.expect(&token::Semi)?; + // We grab this before expecting the `;` so it's not a part of the span let prev_span = self.prev_span; + self.expect(&token::Semi)?; + Ok(self.mk_item(lo.to(prev_span), ident, ItemKind::ExternCrate(maybe_path), diff --git a/src/test/ui/suggestions/issue-45799-bad-extern-crate-rename-suggestion-formatting.rs b/src/test/ui/suggestions/issue-45799-bad-extern-crate-rename-suggestion-formatting.rs new file mode 100644 index 00000000000..7c55f9c4eb9 --- /dev/null +++ b/src/test/ui/suggestions/issue-45799-bad-extern-crate-rename-suggestion-formatting.rs @@ -0,0 +1,12 @@ +// Copyright 2017 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. + +extern crate std; +fn main() {} diff --git a/src/test/ui/suggestions/issue-45799-bad-extern-crate-rename-suggestion-formatting.stderr b/src/test/ui/suggestions/issue-45799-bad-extern-crate-rename-suggestion-formatting.stderr new file mode 100644 index 00000000000..a4eadcc8b46 --- /dev/null +++ b/src/test/ui/suggestions/issue-45799-bad-extern-crate-rename-suggestion-formatting.stderr @@ -0,0 +1,14 @@ +error[E0259]: the name `std` is defined multiple times + --> $DIR/issue-45799-bad-extern-crate-rename-suggestion-formatting.rs:11:1 + | +11 | extern crate std; + | ^^^^^^^^^^^^^^^^ `std` reimported here + | + = note: `std` must be defined only once in the type namespace of this module +help: You can use `as` to change the binding name of the import + | +11 | extern crate std as Otherstd; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + |