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Fix closure migration suggestion when the body is a macro.

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This commit is contained in:
Mara Bos 2021-08-12 11:57:32 +02:00
parent eb2226b1f1
commit 945a4b18d9
1 changed files with 12 additions and 2 deletions
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14
compiler/rustc_typeck/src/check/upvar.rs
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@ -47,7 +47,7 @@ use rustc_middle::ty::{
};
use rustc_session::lint;
use rustc_span::sym;
use rustc_span::{MultiSpan, Span, Symbol};
use rustc_span::{MultiSpan, Span, Symbol, DUMMY_SP};
use rustc_trait_selection::infer::InferCtxtExt;
use rustc_data_structures::stable_map::FxHashMap;
@ -644,7 +644,17 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
}
}
diagnostics_builder.note("for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/disjoint-capture-in-closures.html>");
let closure_body_span = self.tcx.hir().span(body_id.hir_id);
let mut closure_body_span = self.tcx.hir().span(body_id.hir_id);
// If the body was entirely expanded from a macro
// invocation, as the body is not contained inside the
// closure span. In that case, we walk up the expansion
// until we find the span before the expansion.
while !closure_body_span.is_dummy() && !closure_span.contains(closure_body_span) {
closure_body_span = closure_body_span.parent().unwrap_or(DUMMY_SP);
}
let (sugg, app) =
match self.tcx.sess.source_map().span_to_snippet(closure_body_span) {
Ok(s) => {