From 109be507377fe7f6e8819ac94041d3fdcdf6fd2f Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:18:25 +0200 Subject: Adding upstream version 1.19.8. Signed-off-by: Daniel Baumann --- test/fixedbugs/issue8004.go | 59 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 test/fixedbugs/issue8004.go (limited to 'test/fixedbugs/issue8004.go') diff --git a/test/fixedbugs/issue8004.go b/test/fixedbugs/issue8004.go new file mode 100644 index 0000000..548ee1c --- /dev/null +++ b/test/fixedbugs/issue8004.go @@ -0,0 +1,59 @@ +// run + +// Copyright 2014 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. + +package main + +import ( + "reflect" + "runtime" + "unsafe" +) + +func main() { + test1() + test2() +} + +func test1() { + var all []interface{} + for i := 0; i < 100; i++ { + p := new([]int) + *p = append(*p, 1, 2, 3, 4) + h := (*reflect.SliceHeader)(unsafe.Pointer(p)) + all = append(all, h, p) + } + runtime.GC() + for i := 0; i < 100; i++ { + p := *all[2*i+1].(*[]int) + if p[0] != 1 || p[1] != 2 || p[2] != 3 || p[3] != 4 { + println("BUG test1: bad slice at index", i, p[0], p[1], p[2], p[3]) + return + } + } +} + +type T struct { + H *reflect.SliceHeader + P *[]int +} + +func test2() { + var all []T + for i := 0; i < 100; i++ { + p := new([]int) + *p = append(*p, 1, 2, 3, 4) + h := (*reflect.SliceHeader)(unsafe.Pointer(p)) + all = append(all, T{H: h}, T{P: p}) + } + runtime.GC() + for i := 0; i < 100; i++ { + p := *all[2*i+1].P + if p[0] != 1 || p[1] != 2 || p[2] != 3 || p[3] != 4 { + println("BUG test2: bad slice at index", i, p[0], p[1], p[2], p[3]) + return + } + } +} -- cgit v1.2.3