https://bugzilla.novell.com/show_bug.cgi?id=460242
Summary: Compilation of C# involving generically-typed collection
classes fails with a System.IndexOutOfRangeException
Product: Mono: Compilers
Version: SVN
Platform: All
OS/Version: All
Status: NEW
Severity: Normal
Priority: P5 - None
Component: C#
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
CC: [email protected]
Found By: Community User
Created an attachment (id=260885)
--> (https://bugzilla.novell.com/attachment.cgi?id=260885)
C# code that produces the compiler error
When compiling C# code with classes based on generically-typed signatures
(based on System.Collections.Generic), the mono C# compiler fails and produces
a "System.IndexOutOfRangeException". Compilation succeeds on .NET.
NOTE: This is a regression from mono version 1.9. (applicable to 2.0, 2.2, and
SVN)
The attached program illustrates this compilation failure when compiled using
gmcs. For this specific example, the stack trace is as follows:
Exception caught by the compiler while compiling:
Block that caused the problem begin at: Foo.cs(10,24):
Block being compiled: [Foo.cs(11,5):,Foo.cs(17,5):]
System.IndexOutOfRangeException: Array index is out of range.
Internal compiler error at Foo.cs(10,24):: exception caught while emitting
MethodBuilder [Foo::Main]
Unhandled Exception: System.IndexOutOfRangeException: Array index is out of
range.
at Mono.CSharp.ConstraintChecker.CheckConstraint (IResolveContext ec,
System.Type ptype, Mono.CSharp.Expression expr, System.Type ctype) [0x00000]
at Mono.CSharp.ConstraintChecker.CheckConstraints (IResolveContext ec, Int32
index) [0x00000]
at Mono.CSharp.ConstraintChecker.CheckConstraints (IResolveContext ec)
[0x00000]
at Mono.CSharp.ConstraintChecker.CheckConstraints (Mono.CSharp.EmitContext
ec, System.Reflection.MethodBase definition, System.Reflection.MethodBase
instantiated, Location loc) [0x00000]
at Mono.CSharp.MethodGroupExpr.OverloadResolve (Mono.CSharp.EmitContext ec,
System.Collections.ArrayList& Arguments, Boolean may_fail, Location loc)
[0x00000]
at Mono.CSharp.Invocation.DoResolveOverload (Mono.CSharp.EmitContext ec)
[0x00000]
at Mono.CSharp.Invocation.DoResolve (Mono.CSharp.EmitContext ec) [0x00000]
at Mono.CSharp.Expression.Resolve (Mono.CSharp.EmitContext ec, ResolveFlags
flags) [0x00000]
at Mono.CSharp.Expression.Resolve (Mono.CSharp.EmitContext ec) [0x00000]
at Mono.CSharp.ExpressionStatement.ResolveStatement (Mono.CSharp.EmitContext
ec) [0x00000]
at Mono.CSharp.StatementExpression.Resolve (Mono.CSharp.EmitContext ec)
[0x00000]
at Mono.CSharp.Block.Resolve (Mono.CSharp.EmitContext ec) [0x00000]
at Mono.CSharp.ExplicitBlock.Resolve (Mono.CSharp.EmitContext ec) [0x00000]
at Mono.CSharp.EmitContext.ResolveTopBlock (Mono.CSharp.EmitContext
anonymous_method_host, Mono.CSharp.ToplevelBlock block, Mono.CSharp.Parameters
ip, IMethodData md, System.Boolean& unreachable) [0x00000]
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