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cmd/compile: 1.15 heap allocations regression when calling Write on os.Stdout [1.14 backport] #41542

gopherbot opened this issue Sep 21, 2020 · 1 comment


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@gopherbot gopherbot commented Sep 21, 2020

@ianlancetaylor requested issue #41474 to be considered for backport to the next 1.14 minor release.

@gopherbot Please open a backport issue for 1.15.

This is an unexpected and unavoidable performance regression in 1.15: using Write to write a []byte forces the []byte to escape into the heap. That did not happen in 1.14.

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@mdempsky mdempsky commented Sep 21, 2020

Bad bot.


@mdempsky mdempsky closed this Sep 21, 2020
@golang golang locked and limited conversation to collaborators Sep 21, 2021
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