diff options
Diffstat (limited to 'compiler/rustc_middle/src/traits/mod.rs')
| -rw-r--r-- | compiler/rustc_middle/src/traits/mod.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/traits/mod.rs b/compiler/rustc_middle/src/traits/mod.rs index 1a5a9765ce7..5bdde3a514e 100644 --- a/compiler/rustc_middle/src/traits/mod.rs +++ b/compiler/rustc_middle/src/traits/mod.rs @@ -412,6 +412,10 @@ pub enum ObligationCauseCode<'tcx> { /// Obligations emitted during the normalization of a free type alias. TypeAlias(ObligationCauseCodeHandle<'tcx>, Span, DefId), + + /// Only reachable if the `unsized_fn_params` feature is used. Unsized function arguments must + /// be place expressions because we can't store them in MIR locals as temporaries. + UnsizedNonPlaceExpr(Span), } /// Whether a value can be extracted into a const. |