passing function result of a parameter pack to a generic function results in false compiler error.

[JaapWijnen]

Description

Passing a parameter pack function result directly into a generic function that compares it to a parameter with the same type fails to compile.

Reproduction

struct V<each U> { }

func combine<each LHSU, each RHSU>(lhs: V<repeat each LHSU>, rhs: V<repeat each RHSU>) -> V<repeat each LHSU, repeat each RHSU> {
    .init()
}

func compareGeneric<T>(lhs: T, rhs: T) { } // doesn't actually compare anything

// fails to compile with error: Cannot convert value of type 'V<Int, Int, Int, String>' to expected argument type 'V<Int, Int, Int, String>'
// Which is the exact same type
func doThing() {
    compareGeneric(lhs: combine(lhs: V<Int, Int>(), rhs: V<Int, String>()), rhs: V<Int, Int, Int, String>())
}

// does compile by adding an intermediary variable to store the result of combine(lhs:rhs:)
//func doThing() {
//    let intermediary = combine(lhs: V<Int, Int>(), rhs: V<Int, String>())
//    compareGeneric(lhs: intermediary, rhs: V<Int, Int, Int, String>())
//}

Expected behavior

Expected to compile.

Environment

Fails on both:
6.0-DEVELOPMENT-SNAPSHOT-2024-04-30-a
Apple Swift version 6.0-dev (LLVM 7b8e6346027d2b1, Swift 763421c)
Target: arm64-apple-macosx14.0
and:
DEVELOPMENT-SNAPSHOT-2024-05-01-a
Apple Swift version 6.0-dev (LLVM b66077aefd3be08, Swift 84d3618)
Target: arm64-apple-macosx14.0

Additional information

No response