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/issue39459.go | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 test/fixedbugs/issue39459.go (limited to 'test/fixedbugs/issue39459.go') diff --git a/test/fixedbugs/issue39459.go b/test/fixedbugs/issue39459.go new file mode 100644 index 0000000..de78a17 --- /dev/null +++ b/test/fixedbugs/issue39459.go @@ -0,0 +1,22 @@ +// compile + +// 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. + +package p + +type T struct { // big enough to be an unSSAable type + a, b, c, d, e, f int +} + +func f(x interface{}, p *int) { + _ = *p // trigger nil check here, removing it from below + switch x := x.(type) { + case *T: + // Zero twice, so one of them will be removed by the deadstore pass + *x = T{} + *p = 0 // store op to prevent Zero ops from being optimized by the earlier opt pass rewrite rules + *x = T{} + } +} -- cgit v1.2.3