diff options
| author | Keith Randall <khr@golang.org> | 2025-08-01 07:38:55 -0700 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2025-08-01 08:57:29 -0700 |
| commit | eef5f8d93016147718afba8a05282d2ba7332c51 (patch) | |
| tree | 758ad8a47cfbdeac24716e7408ac9a35c2c8642a /test | |
| parent | e071617222e373f59db8995ce171bae708e0dcef (diff) | |
| download | go-eef5f8d93016147718afba8a05282d2ba7332c51.tar.xz | |
cmd/compile: enforce that locals are always accessed with SP base register
After CL 678937, we could have a situation where the value of the
stack pointer is in both SP and another register. We need to make sure
that regalloc picks SP when issuing a reference to local variables;
the assembler expects that.
Fixes #74836
Change-Id: I2ac73ece6eb44b4a78c1369f8a69e51ab9748754
Reviewed-on: https://go-review.googlesource.com/c/go/+/692395
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Mark Freeman <mark@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'test')
| -rw-r--r-- | test/fixedbugs/issue74836.go | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/fixedbugs/issue74836.go b/test/fixedbugs/issue74836.go new file mode 100644 index 0000000000..3e61c71093 --- /dev/null +++ b/test/fixedbugs/issue74836.go @@ -0,0 +1,17 @@ +// compile + +// Copyright 2025 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 + +type T struct { + a [20]int +} + +func f(x [4]int) { + g(T{}, x) +} + +func g(t T, x [4]int) |