Array#pack('g') failure with bignum

[djberg96]

truffleruby 21.2.0, like ruby 2.7.3, GraalVM CE Native [x86_64-darwin]

irb(main):001:0> n = 2**63
=> 9223372036854775808
irb(main):002:0> [n].pack('g')
Traceback (most recent call last):
	from /Users/dberger/.rbenv/versions/truffleruby-21.2.0/bin/irb:42:in `<main>'
	from <internal:core> core/kernel.rb:400:in `load'
	from <internal:core> core/kernel.rb:400:in `load'
	from /Users/dberger/.rbenv/versions/truffleruby-21.2.0/lib/gems/gems/irb-1.3.3/exe/irb:11:in `<top (required)>'
	from <internal:core> core/throw_catch.rb:36:in `catch'
	from <internal:core> core/throw_catch.rb:36:in `catch'
	from <internal:core> core/kernel.rb:437:in `loop'
	from <internal:core> core/kernel.rb:325:in `eval'
	from (irb):2:in `<top (required)>'
(irb):2:in `pack': TruffleRuby doesn't have a case for the org.truffleruby.core.format.convert.ToDoubleNodeGen node with values of type org.truffleruby.core.numeric.RubyBignum (TypeError)
	from org.truffleruby.core.format.convert.ToDoubleNodeGen.executeAndSpecialize(ToDoubleNodeGen.java:92)
	from org.truffleruby.core.format.convert.ToDoubleNodeGen.executeToDouble(ToDoubleNodeGen.java:40)
	from org.truffleruby.core.format.read.array.ReadDoubleNode.read(ReadDoubleNode.java:40)
	from org.truffleruby.core.format.read.array.ReadDoubleNodeGen.executeAndSpecialize(ReadDoubleNodeGen.java:97)
	from org.truffleruby.core.format.read.array.ReadDoubleNodeGen.execute(ReadDoubleNodeGen.java:62)
	from org.truffleruby.core.format.convert.ToFloatNodeGen.execute(ToFloatNodeGen.java:27)
	from org.truffleruby.core.format.convert.ReinterpretAsLongNodeGen.execute(ReinterpretAsLongNodeGen.java:27)
	from org.truffleruby.core.format.convert.Integer32BigToBytesNodeGen.execute(Integer32BigToBytesNodeGen.java:27)
	from org.truffleruby.core.format.write.bytes.WriteBytesNodeGen.execute(WriteBytesNodeGen.java:26)
	from org.truffleruby.core.format.FormatRootNode.execute(FormatRootNode.java:60)
	from org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.executeRootNode(OptimizedCallTarget.java:632)

[eregon]

Thank you for the report.
@aardvark179 Could you look into this?

[aardvark179]

Thanks for this one. It's not just bignums that aren't being handled here, it appears rationals should also be converted.

[aardvark179]

Fix in commit 39d740b.