runtime: unexpected fault address 0 [1.22 backport]

[gopherbot]

@randall77 requested issue #67255 to be considered for backport to the next 1.22 minor release.

@gopherbot please open a backport issue for 1.22.

[randall77]

This causes a serious runtime crash in certain instances of append(s, make([]T, n)...) where n is 0.

A workaround by adding n!=0 checks is possible, but it would be difficult to find all such cases.

[gopherbot]

Change https://go.dev/cl/584315 mentions this issue: [release-branch.go1.22] cmd/compile: avoid past-the-end pointer when zeroing

[gopherbot]

Closed by merging 3a84293 to release-branch.go1.22.