Bug 22523 - Mono C# compiler emits error CS1525 for ternary expressions whose then condition is a lambda.
Summary: Mono C# compiler emits error CS1525 for ternary expressions whose then condit...
Status: RESOLVED FIXED
Alias: None
Product: Compilers
Classification: Mono
Component: C# ()
Version: unspecified
Hardware: PC Mac OS
: --- normal
Target Milestone: ---
Assignee: Marek Safar
URL:
Depends on:
Blocks:
 
Reported: 2014-08-29 18:13 UTC by emoriarty
Modified: 2014-09-01 07:28 UTC (History)
2 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
RESOLVED FIXED

Description emoriarty 2014-08-29 18:13:53 UTC
The mono C# compiler incorrectly emits error CS1525 for ternary expressions whose then condition is a lambda

# Test File
public class MyTest
{
      public delegate void MyDelegate();

      public bool       myBool;
      public MyDelegate myDelegate;

      public void Test()
      {
          var errorCS1525 = myBool ? () => { } : myDelegate;
          var errorNone   = myBool ? myDelegate : () => { };
      }
}

# Mono Command line
$ mcs /t:library Test.cs
Mono C# compiler version 3.4.0.0
Test.cs(10,35): error CS1525: Unexpected symbol `?'
Compilation failed: 1 error(s), 0 warnings

# Other Mono Versions
3.0.0.0: fail
3.0.7.0: fail
3.1.1.0: fail
3.2.6.0: fail
3.4.0.0: fail
master/96b74d362a: fail


# CSC 
$ csc /t:library Test.cs
Microsoft (R) Visual C# Compiler version 4.0.30319.18408
for Microsoft (R) .NET Framework 4.5
Copyright (C) Microsoft Corporation. All rights reserved.


Edward Moriarty | Junior Engineer
Coverity | The Leader in Development Testing
Comment 1 Marek Safar 2014-09-01 07:28:52 UTC
Fixed in master