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Add a static size assertion for MatcherPos.

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This commit is contained in:
Nicholas Nethercote 2022-03-03 11:02:43 +11:00
parent 11c565f14b
commit b9fabc3f9c
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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@ -207,6 +207,10 @@ struct MatcherPos<'root, 'tt> {
stack: SmallVec<[MatcherTtFrame<'tt>; 1]>,
}
// 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!(MatcherPos<'_, '_>, 192);
impl<'root, 'tt> MatcherPos<'root, 'tt> {
/// Adds `m` as a named match for the `idx`-th metavar.
fn push_match(&mut self, idx: usize, m: NamedMatch) {