From 43a123c1ae6613b3efeed291fa552ecd909d3acf Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:23:18 +0200 Subject: Adding upstream version 1.20.14. Signed-off-by: Daniel Baumann --- test/fixedbugs/issue14591.go | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 test/fixedbugs/issue14591.go (limited to 'test/fixedbugs/issue14591.go') diff --git a/test/fixedbugs/issue14591.go b/test/fixedbugs/issue14591.go new file mode 100644 index 0000000..626fbbc --- /dev/null +++ b/test/fixedbugs/issue14591.go @@ -0,0 +1,38 @@ +// 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. + +// Test to make sure we don't think values are dead +// when they are assigned to a PPARAMOUT slot before +// the last GC safepoint. + +package main + +import ( + "fmt" + "runtime" +) + +// When a T is deallocated, T[1] is certain to +// get clobbered (the runtime writes 0xdeaddeaddeaddead there). +type T [4]int + +func f() (r, s *T) { + r = &T{0x30, 0x31, 0x32, 0x33} + runtime.GC() + s = &T{0x40, 0x41, 0x42, 0x43} + runtime.GC() + return +} + +func main() { + r, s := f() + if r[1] != 0x31 { + fmt.Printf("bad r[1], want 0x31 got %x\n", r[1]) + } + if s[1] != 0x41 { + fmt.Printf("bad s[1], want 0x41 got %x\n", s[1]) + } +} -- cgit v1.2.3