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runtime: skip pointless writes in freedefer

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Change-Id: I501a0e5c87ec88616c7dcdf1b723758b6df6c088
Reviewed-on: https://go-review.googlesource.com/98758
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Josh Bleecher Snyder 2018-03-02 15:16:02 -08:00
parent 4599419e69
commit f7739c07c8
1 changed files with 3 additions and 2 deletions
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5
src/runtime/panic.go
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@ -280,8 +280,9 @@ func freedefer(d *_defer) {
d.started = false
d.sp = 0
d.pc = 0
d.fn = nil
d._panic = nil
// d._panic and d.fn must be nil already.
// If not, we would have called freedeferpanic or freedeferfn above,
// both of which throw.
d.link = nil
pp.deferpool[sc] = append(pp.deferpool[sc], d)