runtime: don't issue cgocheck error for timer bucket source pointer
The cgo checker was issuing an error with cgocheck=2 when a timer bucket was stored in a pollDesc. The pollDesc values are allocated using persistentalloc, so they are not in the Go heap. The code is OK since timer bucket pointers point into a global array, and as such are never garbage collected or moved. Mark timersBucket notinheap to avoid the problem. timersBucket values only occur in the global timers array. Fixes #23435 Change-Id: I835f31caafd54cdacc692db5989de63bb49e7697 Reviewed-on: https://go-review.googlesource.com/87637 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:Austin Clements <austin@google.com> Reviewed-by:
Brad Fitzpatrick <bradfitz@golang.org>
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