summaryrefslogtreecommitdiffstats
path: root/test/fixedbugs/issue19168.go
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--test/fixedbugs/issue19168.go58
1 files changed, 58 insertions, 0 deletions
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))
+}