diff options
Diffstat (limited to 'src/ir/comp.rs')
| -rw-r--r-- | src/ir/comp.rs | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/src/ir/comp.rs b/src/ir/comp.rs index fd4c8274..12a8fa32 100644 --- a/src/ir/comp.rs +++ b/src/ir/comp.rs @@ -1649,16 +1649,19 @@ impl IsOpaque for CompInfo { return true; } - // We don't have `#[repr(packed = "N")]` in Rust yet, so the best we can - // do is make this struct opaque. - // - // See https://github.com/rust-lang-nursery/rust-bindgen/issues/537 and - // https://github.com/rust-lang/rust/issues/33158 - if self.is_packed(ctx, layout) && layout.map_or(false, |l| l.align > 1) { - warn!("Found a type that is both packed and aligned to greater than \ - 1; Rust doesn't have `#[repr(packed = \"N\")]` yet, so we \ - are treating it as opaque"); - return true; + if !ctx.options().rust_features().repr_packed_n { + // If we don't have `#[repr(packed(N)]`, the best we can + // do is make this struct opaque. + // + // See https://github.com/rust-lang-nursery/rust-bindgen/issues/537 and + // https://github.com/rust-lang/rust/issues/33158 + if self.is_packed(ctx, layout) && layout.map_or(false, |l| l.align > 1) { + warn!("Found a type that is both packed and aligned to greater than \ + 1; Rust before version 1.33 doesn't have `#[repr(packed(N))]`, so we \ + are treating it as opaque. You may wish to set bindgen's rust target \ + version to 1.33 or later to enable `#[repr(packed(N))]` support."); + return true; + } } false |