[go] go/types, types2: improve error message for incomplete alias hashing
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Gopher Robot (Gerrit)
Jun 25, 2026, 3:15:25 PM (6 days ago) Jun 25
to Mark Freeman, goph...@pubsubhelper.golang.org, golang-...@googlegroups.com, golang...@luci-project-accounts.iam.gserviceaccount.com, Robert Griesemer, golang-co...@googlegroups.com
Gopher Robot submitted the change![]( "Open in Gerrit")
Change information
Commit message:
go/types, types2: improve error message for incomplete alias hashing
Currently, there is a known issue when type checking programs like:
type X A
type A = N
type N G[A]
type G[_ any] int
This change just improves the error message from "panic: nil" to
"panic: cannot type hash incomplete alias (see go.dev/...)". This
should prevent duplicate reports like #79655 and #80150.
For #78296
Change-Id: Id89d1d45d60a59164b802f2ea25f27c70ae46cdf
Reviewed-on: https://go-review.googlesource.com/c/go/+/794400
Reviewed-by: Robert Griesemer <g...@google.com>
Auto-Submit: Mark Freeman <markf...@google.com>
LUCI-TryBot-Result: golang...@luci-project-accounts.iam.gserviceaccount.com <golang...@luci-project-accounts.iam.gserviceaccount.com>
Files:
- M src/cmd/compile/internal/types2/typestring.go
- M src/go/types/typestring.go
Change size: S
Delta: 2 files changed, 10 insertions(+), 2 deletions(-)
Branch: refs/heads/master
Submit Requirements:
Code-Review: +2 by Robert Griesemer
TryBots-Pass: LUCI-TryBot-Result+1 by golang...@luci-project-accounts.iam.gserviceaccount.com
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