[impl_trait_in_params]: avoid ICE when function with impl Trait type has no parameters
#11804
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r? @dswij (rustbot has picked a reviewer for you, use r? to override) |
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Oh I didn't take into account weird generics like those (>ω<。) This gets the silly seal of approval from me 👍 |
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Thank you! @bors r+ |
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☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test |
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Fixes #11803
If I'm reading the old code correctly, it was taking the span of the first parameter (without checking that it exists, which caused the ICE) and uses that to figure out where the generic parameter to insert should go (cc @blyxyas you wrote the lint, is that correct?).
This seemed equivalent to just
generics.span, which doesn't require calculating the spans like that and simplifies it a fair bitchangelog: don't ICE when function has no parameters but generics have an
impl Traittype