fix: Fix inference of AsyncFnX return type
#19872
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davidbarsky
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May 27, 2025
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| let TyKind::Tuple(_, input_tys) = arg_param_ty.kind(Interner) else { | ||
| return None; | ||
| }; |
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dumb question: under what circumstances would we not get a TyKind::Tuple here?
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I don't know but I can guess it can happen if users are messing with the raw fn_traits unstable feature. This was in extract_sig_from_projection() so I duplicated it.
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I could panic here, but generally in r-a we avoid panicking except in extreme cases (defensive coding and not offensive coding), because you don't know where the bugs lurk, and IDE crashing is way worse than some incorrect inference.
Veykril
approved these changes
May 28, 2025
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Fixes #19845.