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Point at call span that introduced obligation for the arg

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This commit is contained in:
Esteban Kuber 2021-09-07 11:30:53 +00:00
parent 8a3f712518
commit 569a842730
94 changed files with 668 additions and 250 deletions
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12
compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
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@ -2297,9 +2297,19 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
}
ObligationCauseCode::FunctionArgumentObligation {
arg_hir_id: _,
call_hir_id: _,
call_hir_id,
ref parent_code,
} => {
let hir = self.tcx.hir();
if let Some(Node::Expr(hir::Expr {
kind:
hir::ExprKind::Call(hir::Expr { span, .. }, _)
| hir::ExprKind::MethodCall(_, span, ..),
..
})) = hir.find(call_hir_id)
{
err.span_label(*span, "required by a bound in this call");
}
ensure_sufficient_stack(|| {
self.note_obligation_cause_code(
err,