fix: look at the underlying of a TermRef for a getter #24565
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hamzaremmal
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the
backport:nominated
hamzaremmal
commented
Nov 27, 2025
| jsig(erasedUnderlying, toplevel = toplevel, unboxedVCs = unboxedVCs) | ||
| else typeParamSig(ref.paramName.lastPart) | ||
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|
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| case ref: TermRef if ref.symbol.isGetter => |
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Equivalent in TypeErasure:
scala3/compiler/src/dotty/tools/dotc/core/TypeErasure.scala
Lines 804 to 806 in fe49539
hamzaremmal
commented
Nov 27, 2025
| public final void java.lang.Object.wait(long,int) throws java.lang.InterruptedException | ||
| public final void java.lang.Object.wait() throws java.lang.InterruptedException | ||
| public final native void java.lang.Object.wait(long) throws java.lang.InterruptedException | ||
| public int Foo.x() |
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Before this fix, we would have gotten:
public scala.Function0<java.lang.Object> Foo.x()
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If the type of a
valis aTermRef, generating the generic signature based on the underlying type will produce the typescala.Function0<underlying>. The reason behind this is that during thegettersphase, the same symbol will now refer to the getter where the type will be=> <underlying>. Since theTermReforiginally intended to capture the underlying type of aval, we recover that information by directly checking the resultType of the getter.Closes #24553