From 73df946d56c74384511a194dd01dbe099584fd1a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:14:23 +0200 Subject: Adding upstream version 1.16.10. Signed-off-by: Daniel Baumann --- test/fixedbugs/issue19168.go | 58 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 test/fixedbugs/issue19168.go (limited to 'test/fixedbugs/issue19168.go') diff --git a/test/fixedbugs/issue19168.go b/test/fixedbugs/issue19168.go new file mode 100644 index 0000000..b94b1d0 --- /dev/null +++ b/test/fixedbugs/issue19168.go @@ -0,0 +1,58 @@ +// errorcheck -0 -l -d=wb + +// Copyright 2017 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 p + +import ( + "reflect" + "unsafe" + + reflect2 "reflect" +) + +func sink(e interface{}) + +func a(hdr *reflect.SliceHeader, p *byte) { + hdr.Data = uintptr(unsafe.Pointer(p)) // ERROR "write barrier" +} + +func b(hdr *reflect.StringHeader, p *byte) { + hdr.Data = uintptr(unsafe.Pointer(p)) // ERROR "write barrier" +} + +func c(hdrs *[1]reflect.SliceHeader, p *byte) { + hdrs[0].Data = uintptr(unsafe.Pointer(p)) // ERROR "write barrier" +} + +func d(hdr *struct{ s reflect.StringHeader }, p *byte) { + hdr.s.Data = uintptr(unsafe.Pointer(p)) // ERROR "write barrier" +} + +func e(p *byte) (resHeap, resStack string) { + sink(&resHeap) + + hdr := (*reflect.StringHeader)(unsafe.Pointer(&resHeap)) + hdr.Data = uintptr(unsafe.Pointer(p)) // ERROR "write barrier" + + // No write barrier for non-escaping stack vars. + hdr = (*reflect.StringHeader)(unsafe.Pointer(&resStack)) + hdr.Data = uintptr(unsafe.Pointer(p)) + + return +} + +func f(hdr *reflect2.SliceHeader, p *byte) { + hdr.Data = uintptr(unsafe.Pointer(p)) // ERROR "write barrier" +} + +type SliceHeader struct { + Data uintptr +} + +func g(hdr *SliceHeader, p *byte) { + // No write barrier for lookalike SliceHeader. + hdr.Data = uintptr(unsafe.Pointer(p)) +} -- cgit v1.2.3