cmd/compile: fix inlining name mangling for blank label

Fixes #70175

Change-Id: I13767d951455854b03ad6707ff9292cfe9097ee9
Reviewed-on: https://go-review.googlesource.com/c/go/+/624377
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Keith Randall <khr@golang.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/test/fixedbugs/issue70175.go b/test/fixedbugs/issue70175.go
new file mode 100644
index 0000000000..0ad6e39a7f
--- /dev/null
+++ b/test/fixedbugs/issue70175.go
@@ -0,0 +1,17 @@
+// compile
+
+// Copyright 2024 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
+
+func f() {
+_:
+
+_:
+}
+
+func main() {
+	f()
+}