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Ambiguous method warnings in core_ext/object.rb in 9k #2104

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iconara opened this issue Nov 5, 2014 · 5 comments
Closed

Ambiguous method warnings in core_ext/object.rb in 9k #2104

iconara opened this issue Nov 5, 2014 · 5 comments
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@iconara
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@iconara iconara commented Nov 5, 2014

When I run jruby-head I get these warnings (I get it whenever a JRuby process starts up when I run tests with rspec and when I run bundle):

file:/Users/theo/.rvm/rubies/jruby-head/lib/jruby.jar!/jruby/java/core_ext/object.rb:27 warning: ambiguous Java methods found, using isJavaIdentifierStart(int)
file:/Users/theo/.rvm/rubies/jruby-head/lib/jruby.jar!/jruby/java/core_ext/object.rb:28 warning: ambiguous Java methods found, using isJavaIdentifierPart(int)

Looks like it's this method:

cc.java_identifier_start? frag[0].ord and

$ ruby -v
jruby 9000.dev-SNAPSHOT (2.1.2p142) 2014-11-05 624823a Java HotSpot(TM) 64-Bit Server VM 25.0-b70 on 1.8.0-b132 +jit [darwin-x86_64]
$ java -version
java version "1.8.0"
Java(TM) SE Runtime Environment (build 1.8.0-b132)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b70, mixed mode)
@enebo
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@enebo enebo commented Nov 5, 2014

Just a drive-by (meaning I am not looking into this) comment is that in Java 8 some default methods on interfaces are the cause of this. I think some of our internal libraries need to be tweaked to account for these new signatures. You can run on Java 7 to confirm this is the cause (e.g. you should not see the warnings).

@krunal
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@krunal krunal commented Nov 7, 2014

Getting same warning while executing 'rails s puma' in development mode and server is getting stuck. And it works perfectly fine with JRuby 1.7.

file:/home/krunal/.rvm/rubies/jruby-head/lib/jruby.jar!/jruby/java/core_ext/object.rb:27 warning: ambiguous Java methods found, using isJavaIdentifierStart(int)
file:/home/krunal/.rvm/rubies/jruby-head/lib/jruby.jar!/jruby/java/core_ext/object.rb:28 warning: ambiguous Java methods found, using isJavaIdentifierPart(int)

java -version
java version "1.7.0_55"
OpenJDK Runtime Environment (IcedTea 2.4.7) (7u55-2.4.7-1ubuntu1~0.13.10.1)
OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode)

@enebo
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@enebo enebo commented Nov 10, 2014

Ok I did not expect this to be an issue with 1.7. The the interface methods are a general cause of this but it must not be this specific issue.

@enebo
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@enebo enebo commented Nov 10, 2014

Err Java 1.7 not JRuby 1.7 :) Numbers...what can you do?

@kares
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@kares kares commented Jan 15, 2016

has been fixed since ... along the lines of 1.7.x releases

@kares kares closed this Jan 15, 2016
@enebo enebo added this to the JRuby 9.0.5.0 milestone Jan 20, 2016
@enebo enebo added this to the JRuby 1.7.24 milestone Jan 20, 2016
@enebo enebo removed this from the JRuby 9.0.5.0 milestone Jan 20, 2016
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4 participants