[NPANDAY-415] Mono build fails on usage of ambiguous String.split(char[*], int) method signature

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4-incubating
• Fix Version/s: 1.5.0-incubating
• Component/s: Maven Plugins
• Labels: mono

Environment

$ mvn -v
Apache Maven 2.2.1 (rdebian-4)
Java version: 1.6.0_24
Java home: /usr/lib/jvm/java-6-sun-1.6.0.24/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux" version: "2.6.35-28-generic" arch: "amd64" Family: "unix"

• Assignee: Unassigned
• Reporter: John Robert Fallows
• Created: 20/Apr/11 03:13
• Updated: 02/May/12 04:45
• Resolved: 27/Jun/11 05:11

Description

When building NPanday.Artifact project with Mono on Linux the following error is presented.

[INFO] /home/jfallows/Workspaces/npanday-trunk/dotnet/assemblies/NPanday.Artifact/target/build-sources/NPanday/Artifact/ArtifactRepository.cs(60,35): error CS0121: The call is ambiguous between the following methods or properties: `string.Split(char[*], int)' and `string.Split(char[*], int)'
[INFO] /usr/lib/mono/2.0/mscorlib.dll (Location of the symbol related to previous error)
Compilation failed: 1 error(s), 51 warnings
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] NPANDAY-900-006: Unable to Compile: Language = C_SHARP, Vendor = null, ArtifactType = library, Source Directory = /home/jfallows/Workspaces/npanday-trunk/dotnet/assemblies/NPanday.Artifact/src/main/csharp

Embedded error: NPANDAY-040-001: Could not execute: Command =  /bin/sh -c cd /usr/lib/mono/2.0 && gmcs @/home/jfallows/Workspaces/npanday-trunk/dotnet/assemblies/NPanday.Artifact/target/1920634/responsefile.rsp, Result = 1

This is caused by method signatures with Enum types being reduced to type int in Mono, and in this specific case it causes a collision with an existing String.split method signature that really does have an int parameter.

An example of the code causing the error can be found in ArtifactRepository.cs, line 60:

String[] tokens = uri.Split("/".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);

A simple fix that keeps the precise meaning of the original code but makes the method signature unambiguous:

String[] tokens = uri.Split("/".ToCharArray(), Int32.MaxValue, StringSplitOptions.RemoveEmptyEntries);