Bug 1597 - Compiler crashes with empty switch on not interned string.
Summary: Compiler crashes with empty switch on not interned string.
Status: RESOLVED FIXED
Alias: None
Product: Compilers
Classification: Mono
Component: C# ()
Version: unspecified
Hardware: PC Linux
: --- normal
Target Milestone: ---
Assignee: Marek Safar
URL:
Depends on:
Blocks:
 
Reported: 2011-10-20 05:14 UTC by Konrad Kruczyński
Modified: 2011-10-20 05:45 UTC (History)
1 user (show)

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


Attachments
File mentioned in the bug report (the test case). (208 bytes, application/octet-stream)
2011-10-20 05:14 UTC, Konrad Kruczyński
Details


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Related Links:
Status:
RESOLVED FIXED

Description Konrad Kruczyński 2011-10-20 05:14:03 UTC
Created attachment 727 [details]
File mentioned in the bug report (the test case).

Description of Problem:
Compiler crashes with stack trace given below when compiling program with switch on non-interned string.

Steps to reproduce the problem:
1. mcs Test.cs (which is attached)
2. Done


Actual Results:
Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object
  at Mono.CSharp.Switch.EmitTableSwitch (Mono.CSharp.EmitContext ec, Mono.CSharp.Expression val) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Switch.DoEmit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Statement.Emit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Block.DoEmit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Block.Emit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.ExplicitBlock.Emit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.ToplevelBlock.Emit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.MethodData.Emit (Mono.CSharp.DeclSpace parent) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.MethodOrOperator.Emit () [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Method.Emit () [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object
  at Mono.CSharp.Switch.EmitTableSwitch (Mono.CSharp.EmitContext ec, Mono.CSharp.Expression val) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Switch.DoEmit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Statement.Emit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Block.DoEmit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Block.Emit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.ExplicitBlock.Emit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.ToplevelBlock.Emit (Mono.CSharp.EmitContext ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.MethodData.Emit (Mono.CSharp.DeclSpace parent) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.MethodOrOperator.Emit () [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Method.Emit () [0x00000] in <filename unknown>:0 



Expected Results:
Compiled without errors.

How often does this happen? 
Always

Additional Information:
Mono from e724aba@GIT.
Comment 1 Marek Safar 2011-10-20 05:45:10 UTC
Fixed in master