validation-test/compiler_crashers_fixed/0129-swift-lexer-lexidentifier.swift

// RUN: not %target-swift-frontend %s -parse

// Distributed under the terms of the MIT license
// Test case submitted to project by https://github.com/practicalswift (practicalswift)
// Test case found by fuzzing

func c<e>() -> (e -> e) -> e {
 e, e -> e) ->)func d(f: b) -> <e>(() -> e) -> b {
  return { g in}