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!
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
Item
is currently very large! Making the sizes of these things explicit and tested is the first step towards making them smaller.r? @aDotInTheVoid