1 files changed, 25 insertions, 0 deletions
diff --git a/test/codegen/zerosize.go b/test/codegen/zerosize.go
new file mode 100644
index 0000000..cd0c83b
--- /dev/null
+++ b/test/codegen/zerosize.go
@@ -0,0 +1,25 @@
+// asmcheck
+
+// Copyright 2018 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.
+
+// Make sure a pointer variable and a zero-sized variable
+// aren't allocated to the same stack slot.
+// See issue 24993.
+
+package codegen
+
+func zeroSize() {
+	c := make(chan struct{})
+	// amd64:`MOVQ\t\$0, ""\.s\+32\(SP\)`
+	var s *int
+	g(&s) // force s to be a stack object
+
+	// amd64:`LEAQ\t""\..*\+31\(SP\)`
+	c <- struct{}{}
+}
+
+//go:noinline
+func g(p **int) {
+}