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builtin: mention PanicNilError in comments of recover

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As of CL 461956 `recover` will not return `nil` if `panic` is called with `nil`. I have updated  comments of `recover` to account for this change.

Change-Id: Ibd0b27fe9b89fb29349b62ad34e762239a1d165b
GitHub-Last-Rev: c773abb75c
GitHub-Pull-Request: golang/go#64393
Reviewed-on: https://go-review.googlesource.com/c/go/+/544975
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
This commit is contained in:
Irakli Safareli 2023-12-18 08:53:03 +00:00 committed by Keith Randall
parent 2acbdd086d
commit 08bec0db39
1 changed files with 4 additions and 3 deletions
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7
src/builtin/builtin.go
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@ -284,9 +284,10 @@ func panic(v any)
// by restoring normal execution and retrieves the error value passed to the
// call of panic. If recover is called outside the deferred function it will
// not stop a panicking sequence. In this case, or when the goroutine is not
// panicking, or if the argument supplied to panic was nil, recover returns
// nil. Thus the return value from recover reports whether the goroutine is
// panicking.
// panicking, recover returns nil.
//
// Prior to Go 1.21, recover would also return nil if panic is called with
// a nil argument. See [panic] for details.
func recover() any
// The print built-in function formats its arguments in an