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https://github.com/apple/swift.git
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Erik Eckstein
1d0eacc4be
When trying to pop a specific element from a SmallProjectionPath, skip `index_addr` with a non-constant index, because the index could be 0. Otherwise `pop` would return nil which lets escape analysis think that there is no match and no escape. Fixes a mis-compile caused by invalid escape analysis. https://github.com/swiftlang/swift/issues/89178 rdar://177183914
50 lines
787 B
Swift
50 lines
787 B
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-build-swift -O %s -o %t/a.out
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// RUN: %target-codesign %t/a.out
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// RUN: %target-run %t/a.out | %FileCheck %s
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// REQUIRES: executable_test
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// Check that the compiled code does not crash because of a wrong
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// stack-promoted array.
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// End-to-end test for https://github.com/apple/swift/issues/52844.
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public struct Beta {
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var gamma: [Int]
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}
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class Delta {
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var epsilon: Beta? = Beta(gamma: [])
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func main() {
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for _ in 1...100 {
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crash()
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}
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}
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func crash() {
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epsilon?.gamma = [0]
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}
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}
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func testit() {
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Delta().main()
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}
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protocol P {}
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final class C: P {}
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@inline(never)
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func test2() -> [P] {
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let a: [AnyObject?] = [ C(), C(), ]
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return a.compactMap { $0 as? P }
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}
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testit()
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test2()
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// CHECK: ok
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print("ok")
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