// RUN: %target-build-swift -parse-as-library -sanitize=fuzzer %s -o %t
// RUN: not %t -only_ascii=1 -max_len=3 | %FileCheck %s
// REQUIRES: CPU=x86_64
// REQUIRES: executable_test
// REQUIRES: fuzzer_runtime
// XFAIL: OS=ios
// XFAIL: OS=tvos
// XFAIL: OS=watchos
// CHECK: Crash!

#if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
  import Darwin
#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
  import Glibc
#elseif os(Windows)
  import MSVCRT
#else
#error("Unsupported platform")
#endif

@_cdecl("LLVMFuzzerTestOneInput") public func fuzzOneInput(Data: UnsafePointer<CChar>, Size: CLong) -> CInt {
  if (Size >= 3 && Data[0] == 65 && Data[1] == 66 && Data[2] == 67) {
    fputs("Crash!", stdout);
    fflush(stdout);
    exit(1);
  }
  return 0;
}