tree aa446b8287ef982dbd952d6330a0f1080e799b70
parent 48e4a4a957429d31328a685863b594ca9a06b552
author Timothy Gu <timothygu99@gmail.com> 1636076572 -0700
committer Damien Neil <dneil@google.com> 1686243255 +0000

internal/export/idna: fix infinite loop in Go pre-1.10

lookupString returns 0 for incomplete UTF-8 sequences, so to
prevent infinite loops we must specifically check for that case.
However, CL 73730 which fixed this issue in 2017 was lost in the
shuffle that allowed multiple Unicode versions in x/text (CL 83235),
and the fix was never applied to idna9.0.0.go.

This CL fixes that oversight.

Updates golang/go#22184

Change-Id: I3a6ab08b157f4017560020ff259d1afbe49a9e71
Reviewed-on: https://go-review.googlesource.com/c/text/+/361494
Reviewed-by: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>