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Add a size assertion for NamedMatchVec.

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This commit is contained in:
Nicholas Nethercote 2022-03-23 11:44:13 +11:00
parent a4a5e79814
commit 904e70a7b0
1 changed files with 4 additions and 0 deletions
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4
compiler/rustc_expand/src/mbe/macro_parser.rs
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@ -103,6 +103,10 @@ struct MatcherTtFrame<'tt> {
type NamedMatchVec = SmallVec<[NamedMatch; 4]>;
// This type is used a lot. Make sure it doesn't unintentionally get bigger.
#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(NamedMatchVec, 72);
/// Represents a single "position" (aka "matcher position", aka "item"), as
/// described in the module documentation.
#[derive(Clone)]