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Auto merge of #28246 - huonw:lang-tracking-issues, r=alexcrichton

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This is similar to the libs version, which allow an `issue` field in the
`#[unstable]` attribute.

cc #28244
This commit is contained in:
bors 2015-09-08 01:02:06 +00:00
commit d2a5b117c1
12 changed files with 139 additions and 104 deletions
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6
src/librustc_typeck/astconv.rs
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@ -70,7 +70,7 @@ use util::nodemap::FnvHashSet;
use std::slice;
use syntax::{abi, ast};
use syntax::codemap::{Span, Pos};
use syntax::feature_gate::emit_feature_err;
use syntax::feature_gate::{GateIssue, emit_feature_err};
use syntax::parse::token;
use rustc_front::print::pprust;
@ -797,7 +797,7 @@ fn create_substs_for_ast_trait_ref<'a,'tcx>(this: &AstConv<'tcx>,
// only with `Fn()` etc.
if !this.tcx().sess.features.borrow().unboxed_closures && trait_def.paren_sugar {
emit_feature_err(&this.tcx().sess.parse_sess.span_diagnostic,
"unboxed_closures", span,
"unboxed_closures", span, GateIssue::Language,
"\
the precise format of `Fn`-family traits' type parameters is \
subject to change. Use parenthetical notation (Fn(Foo, Bar) -> Baz) instead");
@ -810,7 +810,7 @@ fn create_substs_for_ast_trait_ref<'a,'tcx>(this: &AstConv<'tcx>,
// only with `Fn()` etc.
if !this.tcx().sess.features.borrow().unboxed_closures && !trait_def.paren_sugar {
emit_feature_err(&this.tcx().sess.parse_sess.span_diagnostic,
"unboxed_closures", span,
"unboxed_closures", span, GateIssue::Language,
"\
parenthetical notation is only stable when used with `Fn`-family traits");
}