diff options
Diffstat (limited to 'src/librustc_mir/transform/qualify_consts.rs')
| -rw-r--r-- | src/librustc_mir/transform/qualify_consts.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/librustc_mir/transform/qualify_consts.rs b/src/librustc_mir/transform/qualify_consts.rs index 0b9ad85e6b1..4400717fabc 100644 --- a/src/librustc_mir/transform/qualify_consts.rs +++ b/src/librustc_mir/transform/qualify_consts.rs @@ -728,7 +728,10 @@ impl<'a, 'tcx> Checker<'a, 'tcx> { interior mutability, create a static instead"); } } - } else { + } else if let BorrowKind::Mut { .. } | BorrowKind::Shared = kind { + // Don't promote BorrowKind::Shallow borrows, as they don't + // reach codegen. + // We might have a candidate for promotion. let candidate = Candidate::Ref(location); // We can only promote interior borrows of promotable temps. |