Don't ICE in layout computation for placeholder types #111490
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May 12, 2023
…iaskrgr Rollup of 6 pull requests Successful merges: - rust-lang#111179 (Fix instrument-coverage tests by using Python to sort instantiation groups) - rust-lang#111393 (bump windows crate 0.46 -> 0.48) - rust-lang#111441 (Verify copies of mutable pointers in 2 stages in ReferencePropagation) - rust-lang#111456 (Update cargo) - rust-lang#111490 (Don't ICE in layout computation for placeholder types) - rust-lang#111492 (use by ref TokenTree iterator to avoid a few clones) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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We use
layout_offor the built-inPointerLiketrait to check if a type can be coerced to adyn*.Since the new solver canonicalizes parameter types to placeholders, that code needs to be able to treat placeholders like params, and for the most part it does, except for a call to
is_trivially_sized. This PR fixes that.