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fix(#i18645): overload ext method body in braces didn't compile #19651

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i10416
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@i10416 i10416 commented Feb 9, 2024

close #18645

related to #12941

tryWithImplicitOnQualifier returned without attempting tryInsertImplicitOnQualifier, which prevented the compiler from finding overloaded method, because hasInnerErrors in ProtoTypes picked up the inner error propagated back from outer error.

When compiling x.pprint(()=> { 123 }) before this commit, in hasInnerErrors, t contains two sub trees; Block(stmt, expr) and stmt. The span of the former matches the span of t, but that of the latter does not, which caused hasInnerErrors to return true, but the error from the latter is duplicated with the error of parent tree t.

`tryWithImplicitOnQualifier` returned without attempting `tryInsertImplicitOnQualifier`,
which prevented the compiler from finding overloaded method, because `hasInnerErrors`
in `ProtoTypes` picked up the inner error propagated back from outer error.

When compiling `x.pprint(()=> { 123 })` before this commit, in `hasInnerErrors`,
`t` contains two sub trees; `Block(stmt, expr)` and `stmt`. The span of the former matches
the span of `t`, but that of the latter does not, which caused `hasInnerErrors` to return `true`,
but the error from the latter is duplicated with the error of parent tree `t`.
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i10416 commented Feb 9, 2024

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@dwijnand dwijnand left a comment

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So, I think this ends up being the right fix.

@dwijnand dwijnand merged commit 8776677 into scala:main Feb 13, 2024
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@Kordyjan Kordyjan added this to the 3.4.1 milestone Feb 14, 2024
WojciechMazur added a commit that referenced this pull request Jul 2, 2024
…pile" to LTS (#20916)

Backports #19651 to the LTS branch.

PR submitted by the release tooling.
[skip ci]
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Overloaded extension method usage does not compile if the body of its callback argument is wrapped in braces
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