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remove outdated comment

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This commit is contained in:
Niko Matsakis 2021-07-04 12:50:35 -04:00
parent 63fbefd359
commit 1c1573d2a3
1 changed files with 0 additions and 2 deletions
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compiler/rustc_typeck/src/check/cast.rs
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@ -440,8 +440,6 @@ impl<'a, 'tcx> CastCheck<'tcx> {
let expr_ty = fcx.resolve_vars_if_possible(self.expr_ty);
let expr_ty = fcx.tcx.erase_regions(expr_ty);
let ty_params = fcx.tcx.mk_substs_trait(expr_ty, &[]);
// Check for infer types because cases like `Option<{integer}>` would
// panic otherwise.
if fcx
.tcx
.type_implements_trait((from_trait, ty, ty_params, fcx.param_env))