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Add assertions for TyS and TypeVariants sizes

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This commit is contained in:
John Kåre Alsaker 2018-05-27 17:13:15 +02:00
parent 6c2d875261
commit 0b6586b989
1 changed files with 6 additions and 0 deletions
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6
src/librustc/ty/context.rs
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@ -794,6 +794,12 @@ impl<'a, 'gcx> HashStable<StableHashingContext<'a>> for TypeckTables<'gcx> {
impl<'tcx> CommonTypes<'tcx> {
fn new(interners: &CtxtInterners<'tcx>) -> CommonTypes<'tcx> {
// Ensure our type representation does not grow
#[cfg(target_pointer_width = "64")]
assert!(mem::size_of::<ty::TypeVariants>() <= 24);
#[cfg(target_pointer_width = "64")]
assert!(mem::size_of::<ty::TyS>() <= 32);
let mk = |sty| CtxtInterners::intern_ty(interners, interners, sty);
let mk_region = |r| {
if let Some(r) = interners.region.borrow().get(&r) {