concurrentTypeByName.swift

// RUN: %target-run-simple-swift
// REQUIRES: executable_test

// REQUIRES: radar82364236

import StdlibUnittest
import SwiftPrivateThreadExtras

protocol P {}
class GenericWrapper<T: P> {}

let ConcurrentTypeByNameTests = TestSuite("ConcurrentTypeByName")

// We're testing for a race in looking up types by name, when there's a protocol
// constraint on a generic argument, and that constraint is fulfilled by a
// superclass. This race is more easily exposed when the superclass's metadata
// takes a long time to fill out, so we make it have a ton of properties here.
class Super<T>: P {
  var val0: T?
  var val1: T?
  var val2: T?
  var val3: T?
  var val4: T?
  var val5: T?
  var val6: T?
  var val7: T?
  var val8: T?
  var val9: T?
  var val10: T?
  var val11: T?
  var val12: T?
  var val13: T?
  var val14: T?
  var val15: T?
  var val16: T?
  var val17: T?
  var val18: T?
  var val19: T?
  var val20: T?
  var val21: T?
  var val22: T?
  var val23: T?
  var val24: T?
  var val25: T?
  var val26: T?
  var val27: T?
  var val28: T?
  var val29: T?
  var val30: T?
  var val31: T?
  var val32: T?
  var val33: T?
  var val34: T?
  var val35: T?
  var val36: T?
  var val37: T?
  var val38: T?
  var val39: T?
  var val40: T?
  var val41: T?
  var val42: T?
  var val43: T?
  var val44: T?
  var val45: T?
  var val46: T?
  var val47: T?
  var val48: T?
  var val49: T?
  var val50: T?
  var val51: T?
  var val52: T?
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  var val54: T?
  var val55: T?
  var val56: T?
  var val57: T?
  var val58: T?
  var val59: T?
  var val60: T?
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  var val62: T?
  var val63: T?
  var val64: T?
  var val65: T?
  var val66: T?
  var val67: T?
  var val68: T?
  var val69: T?
  var val70: T?
  var val71: T?
  var val72: T?
  var val73: T?
  var val74: T?
  var val75: T?
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  var val78: T?
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  var val90: T?
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  var val92: T?
  var val93: T?
  var val94: T?
  var val95: T?
  var val96: T?
  var val97: T?
  var val98: T?
  var val99: T?
  var val100: T?
  var val101: T?
  var val102: T?
  var val103: T?
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  var val105: T?
  var val106: T?
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  var val880: T?
  var val881: T?
  var val882: T?
  var val883: T?
  var val884: T?
  var val885: T?
  var val886: T?
  var val887: T?
  var val888: T?
  var val889: T?
  var val890: T?
  var val891: T?
  var val892: T?
  var val893: T?
  var val894: T?
  var val895: T?
  var val896: T?
  var val897: T?
  var val898: T?
  var val899: T?
  var val900: T?
  var val901: T?
  var val902: T?
  var val903: T?
  var val904: T?
  var val905: T?
  var val906: T?
  var val907: T?
  var val908: T?
  var val909: T?
  var val910: T?
  var val911: T?
  var val912: T?
  var val913: T?
  var val914: T?
  var val915: T?
  var val916: T?
  var val917: T?
  var val918: T?
  var val919: T?
  var val920: T?
  var val921: T?
  var val922: T?
  var val923: T?
  var val924: T?
  var val925: T?
  var val926: T?
  var val927: T?
  var val928: T?
  var val929: T?
  var val930: T?
  var val931: T?
  var val932: T?
  var val933: T?
  var val934: T?
  var val935: T?
  var val936: T?
  var val937: T?
  var val938: T?
  var val939: T?
  var val940: T?
  var val941: T?
  var val942: T?
  var val943: T?
  var val944: T?
  var val945: T?
  var val946: T?
  var val947: T?
  var val948: T?
  var val949: T?
  var val950: T?
  var val951: T?
  var val952: T?
  var val953: T?
  var val954: T?
  var val955: T?
  var val956: T?
  var val957: T?
  var val958: T?
  var val959: T?
  var val960: T?
  var val961: T?
  var val962: T?
  var val963: T?
  var val964: T?
  var val965: T?
  var val966: T?
  var val967: T?
  var val968: T?
  var val969: T?
  var val970: T?
  var val971: T?
  var val972: T?
  var val973: T?
  var val974: T?
  var val975: T?
  var val976: T?
  var val977: T?
  var val978: T?
  var val979: T?
  var val980: T?
  var val981: T?
  var val982: T?
  var val983: T?
  var val984: T?
  var val985: T?
  var val986: T?
  var val987: T?
  var val988: T?
  var val989: T?
  var val990: T?
  var val991: T?
  var val992: T?
  var val993: T?
  var val994: T?
  var val995: T?
  var val996: T?
  var val997: T?
  var val998: T?
  var val999: T?
  var val1000: T?
  var val1001: T?
  var val1002: T?
  var val1003: T?
  var val1004: T?
  var val1005: T?
  var val1006: T?
  var val1007: T?
  var val1008: T?
  var val1009: T?
  var val1010: T?
  var val1011: T?
  var val1012: T?
  var val1013: T?
  var val1014: T?
  var val1015: T?
  var val1016: T?
  var val1017: T?
  var val1018: T?
  var val1019: T?
  var val1020: T?
  var val1021: T?
  var val1022: T?
  var val1023: T?
}
class Sub: Super<Int> {}

ConcurrentTypeByNameTests.test("concurrent _typeByName") {
  if #available(SwiftStdlib 5.1, *) {
    func printTypeByName() {
      print(_typeByName("4main14GenericWrapperCyAA3SubCG")! as Any)
    }

    let (createRet1, tid1) = _stdlib_thread_create_block(printTypeByName, ())
    let (createRet2, tid2) = _stdlib_thread_create_block(printTypeByName, ())
    expectEqual(0, createRet1)
    expectEqual(0, createRet2)
    _ = _stdlib_thread_join(tid1!, Void.self)
    _ = _stdlib_thread_join(tid2!, Void.self)
  }
}

runAllTests()