diff --git a/src/cmd/compile/internal/walk/builtin.go b/src/cmd/compile/internal/walk/builtin.go index 5c924a90c5..786c31313c 100644 --- a/src/cmd/compile/internal/walk/builtin.go +++ b/src/cmd/compile/internal/walk/builtin.go @@ -135,7 +135,11 @@ func walkClear(n *ir.UnaryExpr) ir.Node { typ := n.X.Type() switch { case typ.IsSlice(): - return arrayClear(n.X.Pos(), n.X, nil) + if n := arrayClear(n.X.Pos(), n.X, nil); n != nil { + return n + } + // If n == nil, we are clearing an array which takes zero memory, do nothing. + return ir.NewBlockStmt(n.Pos(), nil) case typ.IsMap(): return mapClear(n.X, reflectdata.TypePtrAt(n.X.Pos(), n.X.Type())) } diff --git a/test/fixedbugs/issue61127.go b/test/fixedbugs/issue61127.go new file mode 100644 index 0000000000..c8ee5c5ee4 --- /dev/null +++ b/test/fixedbugs/issue61127.go @@ -0,0 +1,13 @@ +// compile + +// Copyright 2023 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 + +var V = []struct{}{} + +func main() { + clear(V) +}