diff options
| -rw-r--r-- | src/librustc_target/abi/mod.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/librustc_target/abi/mod.rs b/src/librustc_target/abi/mod.rs index 26d37f196be..fde5c5bed4d 100644 --- a/src/librustc_target/abi/mod.rs +++ b/src/librustc_target/abi/mod.rs @@ -738,7 +738,11 @@ impl FieldPlacement { pub fn offset(&self, i: usize) -> Size { match *self { - FieldPlacement::Union(_) => Size::ZERO, + FieldPlacement::Union(count) => { + assert!(i < count, + "Tried to access field {} of union with {} fields", i, count); + Size::ZERO + }, FieldPlacement::Array { stride, count } => { let i = i as u64; assert!(i < count); |