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797901fc41
Note that I said "warnings"; we're going to be more cautious about rollout and just make this a warning in Swift 5 mode, with /no/ diagnostics in Swift 3 and 4. Users are still free to use `@unknown default` in these modes, and they'll get a fatal run-time error if they don't and an unexpected case actually shows up. rdar://problem/29324688
26 lines
842 B
Swift
26 lines
842 B
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -swift-version 5 -enable-resilience -enable-testing %S/Inputs/exhaustive_switch_testable_helper.swift -emit-module -o %t
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// RUN: %target-swift-frontend -typecheck %s -swift-version 5 -I %t -DTESTABLE -verify
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// RUN: %target-swift-frontend -typecheck %s -swift-version 5 -I %t 2>&1 | %FileCheck -check-prefix=VERIFY-NON-FROZEN %s
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#if TESTABLE
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@testable import exhaustive_switch_testable_helper
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#else
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import exhaustive_switch_testable_helper
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#endif
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func testFrozen(_ e: FrozenEnum) -> Int {
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switch e {
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case .a: return 1
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case .b, .c: return 2
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}
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}
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func testNonFrozen(_ e: NonFrozenEnum) -> Int {
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// VERIFY-NON-FROZEN: exhaustive_switch_testable.swift:[[@LINE+1]]:{{[0-9]+}}: warning: switch must be exhaustive
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switch e {
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case .a: return 1
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case .b, .c: return 2
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}
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}
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