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-rw-r--r--test/fixedbugs/issue42944.go24
1 files changed, 24 insertions, 0 deletions
diff --git a/test/fixedbugs/issue42944.go b/test/fixedbugs/issue42944.go
new file mode 100644
index 0000000..bb947bc
--- /dev/null
+++ b/test/fixedbugs/issue42944.go
@@ -0,0 +1,24 @@
+// errorcheck -0 -live
+
+// Copyright 2020 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 42944: address of callee args area should only be short-lived
+// and never across a call.
+
+package p
+
+type T [10]int // trigger DUFFCOPY when passing by value, so it uses the address
+
+func F() {
+ var x T
+ var i int
+ for {
+ x = G(i) // no autotmp live at this and next calls
+ H(i, x)
+ }
+}
+
+func G(int) T
+func H(int, T)