rustdoc_json: Add a test for the size of important types. #146315
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We have size checks like these for many different parts of the compiler: AST, HIR, MIR, etc. Those ones all use `static_assert_size!` from `rustc_index`, but because rustdoc-json-types is distributed as its own crate it can't depend on `rustc_index`. So I've just put the checks in a unit test. Note that `Item` is currently very large! Making the sizes of these things explicit and tested is the first step towards making them smaller.
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rustdoc-json-types is a public (although nightly-only) API. If possible, consider changing |
obi1kenobi
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Sep 7, 2025
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Wait, sorry, I already did this a better way (static assertions) in #142502. |
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We have size checks like these for many different parts of the compiler: AST, HIR, MIR, etc. Those ones all use
static_assert_size!fromrustc_index, but because rustdoc-json-types is distributed as its own crate it can't depend onrustc_index. So I've just put the checks in a unit test.Note that
Itemis currently very large! Making the sizes of these things explicit and tested is the first step towards making them smaller.r? @aDotInTheVoid