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[swiftc (79 vs. 5179)] Add crasher in ?
Add test case for crash triggered in `?`. Current number of unresolved compiler crashers: 79 (5179 resolved) Assertion failure in [`lib/AST/Type.cpp (line 1280)`](https://github.com/apple/swift/blob/master/lib/AST/Type.cpp#L1280): ``` Assertion `Result && "Case not implemented!"' failed. When executing: swift::CanType swift::TypeBase::getCanonicalType() ``` Assertion context: ``` } } // Cache the canonical type for future queries. assert(Result && "Case not implemented!"); CanonicalType = Result; return CanType(Result); } ``` Stack trace: ``` swift: /path/to/swift/lib/AST/Type.cpp:1280: swift::CanType swift::TypeBase::getCanonicalType(): Assertion `Result && "Case not implemented!"' failed. Stack dump: 0. Program arguments: /path/to/swift/bin/swift -frontend -c -primary-file validation-test/compiler_crashers/28447-result-case-not-implemented-failed.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -module-name main -o /tmp/28447-result-case-not-implemented-failed-778155.o <unknown>:0: error: unable to execute command: Aborted <unknown>:0: error: compile command failed due to signal (use -v to see invocation) ```
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// This source file is part of the Swift.org open source project
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// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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// RUN: not --crash %target-swift-frontend %s -emit-ir
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// REQUIRES: asserts
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t c
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let : {{
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return $0
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== Int
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struct B
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}
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g:

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