internal/poll: avoid tiny allocator for splicePipe
We want to set a finalizer on splicePipe, so make it large enough to
not use the tiny allocator. Otherwise the finalizer will not run until
the rest of the tiny allocation can be freed. This only matters on
32-bit systems.
Fixes #48968
Change-Id: I8eb3c9f48fdccab7dc79c5b918d4257b6151ee91
Reviewed-on: https://go-review.googlesource.com/c/go/+/358114
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
diff --git a/src/internal/poll/splice_linux.go b/src/internal/poll/splice_linux.go
index 8062d98..6869a40 100644
--- a/src/internal/poll/splice_linux.go
+++ b/src/internal/poll/splice_linux.go
@@ -158,6 +158,10 @@
rfd int
wfd int
data int
+
+ // We want to use a finalizer, so ensure that the size is
+ // large enough to not use the tiny allocator.
+ _ [24 - 3*unsafe.Sizeof(int(0))]byte
}
// splicePipePool caches pipes to avoid high-frequency construction and destruction of pipe buffers.
