Enumerable#grep blows up on an array when passed a regexp
---------------------------------------------------------
Key: JRUBY-2233
URL: http://jira.codehaus.org/browse/JRUBY-2233
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Reporter: Charles Oliver Nutter
Fix For: JRuby 1.1RC3
Because Array#each only gets a backtrace frame, self is null; when the regexp
wants to set backref, it can't get at a runtime because self is null:
{noformat}
['1'].grep(/1/)
Exception in thread "main" java.lang.NullPointerException
at org.jruby.runtime.Frame.getBackRef(Frame.java:161)
at org.jruby.RubyRegexp.updateBackRef(RubyRegexp.java:542)
at org.jruby.RubyRegexp.search(RubyRegexp.java:536)
at org.jruby.RubyRegexp.eqq(RubyRegexp.java:259)
at org.jruby.RubyRegexpDispatcher_for_Regexp.callMethod(Unknown Source)
at org.jruby.RubyClass.invoke(RubyClass.java:223)
at
org.jruby.javasupport.util.RuntimeHelpers.invoke(RuntimeHelpers.java:330)
at org.jruby.RubyObject.callMethod(RubyObject.java:481)
at org.jruby.RubyEnumerable$5.call(RubyEnumerable.java:161)
at org.jruby.runtime.CallBlock.yield(CallBlock.java:90)
at org.jruby.runtime.CallBlock.yield(CallBlock.java:69)
at org.jruby.runtime.Block.yield(Block.java:109)
at org.jruby.RubyArray.each(RubyArray.java:1184)
at org.jruby.RubyArrayInvoker$each_method_0_0.call(Unknown Source)
at
org.jruby.internal.runtime.methods.JavaMethod$JavaMethodZeroBlock.call(JavaMethod.java:101)
at org.jruby.RubyClass.invoke(RubyClass.java:237)
at
org.jruby.javasupport.util.RuntimeHelpers.invoke(RuntimeHelpers.java:314)
at org.jruby.RubyObject.callMethod(RubyObject.java:475)
at org.jruby.RubyEnumerable.callEach(RubyEnumerable.java:60)
at org.jruby.RubyEnumerable.grep(RubyEnumerable.java:159)
at org.jruby.RubyEnumerableInvoker$grep_method_1_0.call(Unknown Source)
{noformat}
Fix coming.
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