Support certain Java libraries compiled on JDK 21 #10675
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CONSTANT_Dynamic in constant pool
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I thought the guy who does those forward merges to 2.13 would get around to it eventually. |
lrytz
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SethTisue
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forward-port of scala/scala#10675 and scala/scala#8595 references scala/bug#12396 and scala/bug#11635 fixes #19527 ("bad constant pool tag 17") also fixes unreported potential "bad constant pool tag 19" and "bad constant pool tag 20" errors
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CONSTANT_Dynamic in constant pool
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This makes certain Java libraries compiled using Java 21 usable from Scala — libraries that use
switchin a certain way.The fix is to our classfile reader, to recognize
CONSTANT_Dynamicwhen it appears in the constant pool.Fixes scala/bug#12936
Implementation notes
Previous PR in this vein, for comparison: #8289
I verified that
partest test/files/pos/t12396was failing locally on JDK 21 but now passes.PR validation runs on Java 8, so it will not run the test, but it will run at https://github.com/scala/scala/actions after the PR is merged; our GitHub Actions config has
java: [8, 11, 17, 21]