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Pass the scope field to refined call sites for splatted when - #9832
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invokeEQQ, used for a splatted when clause like when *WORDS, passed null as the scope field name to pushCallSite. A potentially refined call site needs that field to find the active refinements, so in a file or class that calls using, the compiler emitted a getstatic for a null field name and ASM threw a NullPointerException. The method and its blocks stayed interpreted. Pass the method's scope field through, as asString already does. Fixes jruby#9827
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Have a wonderful world of refinements. Probably my least favorite Ruby feature, although Ruby::Box might take over that title.
This is pretty clearly just a missed compiler path when dealing with refinements. I won't lose any sleep over making refined code run slower, but we might as well fix this anywhere.
Simple fix, looks good.
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Fixes #9827.
A splatted
whenclause, likewhen *WORDS, compiles to aneqqthat goes throughinvokeEQQ, andinvokeEQQpassednullas the scope field name topushCallSite. That's fine until the call site is potentially refined, which it is in any file or class that callsusing. A refined call site loads the static scope from that field to find the active refinements, so the compiler emitted agetstaticwith a null name and ASM threw aNullPointerException. The method, and any block containing thecase, stayed interpreted.This passes the method's scope field through, the same way
asStringalready does. That meant adding a parameter toInvocationCompiler#invokeEQQ; the two implementations are the only ones.The new spec refines
String#===and checks that a splattedwhenuses it, so it covers both that the method compiles and that the refinement still applies in compiled code. It fails in JIT and AOT mode before this change and passes in all four modes after it, and the result matches CRuby. irb'sRegexpCompletor#select_message, which the issue mentions, now compiles too.