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cmd/compile: assertion failure in validType test [go1.23] #66323

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griesemer opened this issue Mar 14, 2024 · 1 comment
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cmd/compile: assertion failure in validType test [go1.23] #66323

griesemer opened this issue Mar 14, 2024 · 1 comment
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@griesemer
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compiler/runtime Issues related to the Go compiler and/or runtime. release-blocker
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Go1.23

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@griesemer
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The following code causes a compiler crash (playground):

package p

import "time"

type S[T any] struct {
	a T
	b time.Time
}

var _ S[time.Time]
panic: /Users/gri/goroot/src/cmd/compile/internal/types2/validtype.go:126: assertion failed [recovered]
        panic: /Users/gri/goroot/src/cmd/compile/internal/types2/validtype.go:126: assertion failed [recovered]
        panic: /Users/gri/goroot/src/cmd/compile/internal/types2/validtype.go:126: assertion failed
@griesemer griesemer added this to the Go1.23 milestone Mar 14, 2024
@griesemer griesemer self-assigned this Mar 14, 2024
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Mar 14, 2024
@griesemer griesemer changed the title cmd/compile: assertion failure in validType test cmd/compile: assertion failure in validType test [go1.23] Mar 14, 2024
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Change https://go.dev/cl/571836 mentions this issue: go/types, types2: avoid assertio failure in Checker.validType

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