From ccd992355df7192993c666236047820244914598 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:19:13 +0200 Subject: Adding upstream version 1.21.8. Signed-off-by: Daniel Baumann --- test/fixedbugs/issue16948.go | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 test/fixedbugs/issue16948.go (limited to 'test/fixedbugs/issue16948.go') diff --git a/test/fixedbugs/issue16948.go b/test/fixedbugs/issue16948.go new file mode 100644 index 0000000..c986024 --- /dev/null +++ b/test/fixedbugs/issue16948.go @@ -0,0 +1,34 @@ +// run + +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// issue 16948: make sure intrinsified atomic ops won't +// confuse the scheduler. + +package main + +import "sync/atomic" + +func main() { + f() +} + +var x int32 + +type T [10]int +var sink *T + +func f() (t T) { + atomic.AddInt32(&x, 1) + g(42, 42, 42, 42, 42, &t) // use int values that is invalid pointer to smash the stack slot of return value of runtime.newobject + return +} + +//go:noinline +func g(a, b, c, d, e int, p *T) { + var t [10000]int // a large stack frame to trigger stack growing + _ = t + sink = p // force p (in caller) heap allocated +} -- cgit v1.2.3