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Previously we would wait until CSApply, which would trigger their type-checking in `coercePatternToType`. This caused a number of bugs, and hampered solver-based completion, which does not run CSApply. Instead, form a conjunction of all the ExprPatterns present, which preserves some of the previous isolation behavior (though does not provide complete isolation). We can then modify `coercePatternToType` to accept a closure, which allows the solver to take over rewriting the ExprPatterns it has already solved. This then sets the stage for the complete removal of `coercePatternToType`, and doing all pattern type-checking in the solver.
16 lines
371 B
Swift
16 lines
371 B
Swift
// RUN: %target-typecheck-verify-swift
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// rdar://109419240 – Make sure we don't crash
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enum E { // expected-note {{'E' declared here}}
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case e(Int)
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}
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func foo(_ arr: [E]) -> Int {
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return arr.reduce(0) { (total, elem) -> Int in
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switch elem {
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case let e(x): // expected-error {{cannot find 'e' in scope; did you mean 'E'?}}
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return total + x
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}
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}
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}
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