Bug 14712 - Compiler Crashes with code: 1 on a simple code error.
Summary: Compiler Crashes with code: 1 on a simple code error.
Status: RESOLVED FIXED
Alias: None
Product: Compilers
Classification: Mono
Component: C# ()
Version: unspecified
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: ---
Assignee: Marek Safar
URL:
Depends on:
Blocks:
 
Reported: 2013-09-13 08:20 UTC by Alan Price
Modified: 2013-09-13 11:40 UTC (History)
3 users (show)

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

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Status:
RESOLVED FIXED

Description Alan Price 2013-09-13 08:20:25 UTC
The compiler is not catching this code error and is throwing a generic and unhelpful "Compiler Crashes with code: 1"


The following is the method that was causing the issue and should have been caught by the compiler. The specific line with the issue is marked out with lines above and below.  

void ConfirmationDialog ()
{
    AlertDialog.Builder builder = new AlertDialog.Builder (this);
    AlertDialog confirmUpdate = builder.Create ();
    confirmUpdate.SetTitle ("Confirm Update");
    confirmUpdate.SetMessage ("Are you sure you want to Update Changes?");
    confirmUpdate.SetButton2("Cancel", (s, e) => {;});
----------------------------------------------------
    confirmUpdate.SetButton("OK", (s, e) => {SendUpdate;});  //Line that caused the crash. 
----------------------------------------------------
    confirmUpdate.Show ();
}

The line in question should have been :

----------------------------------------------------
  confirmUpdate.SetButton("OK", (s, e) => {SendUpdate(s,e);});
----------------------------------------------------

I was easily able to reproduce this error.
Comment 1 Jonathan Pryor 2013-09-13 11:40:20 UTC
Slight variation:

  using System;
  class Test {
    public static void Main ()
    {
      Set ((s, e) => {Update;});
    }

    static void Set (EventHandler handler)
    {
    }

    static void Update (object sender, EventArgs e)
    {
    }
  }

The above doesn't cause a compiler crash, but the error output isn't helpful either:

> Compilation failed: 2 error(s), 0 warnings

Tested with mcs 3.2.0.

This does appear to be fixed in 3.2.3 (mono master/55065d0):

> bxc14712.cs(5,23): error CS0201: Only assignment, call, increment, decrement, await, and new object expressions can be used as a statement